Abstract

A driving circuit for driving a synchronous rectification transistor includes a first comparator, a second comparator, a third comparator, and a gate driving circuit. When the voltage of the drain terminal of the synchronous rectification transistor is less than a first threshold, the first comparator enables a first comparison signal. When the voltage of the drain terminal is not less than a second threshold, the second comparator enables a second comparison signal. When the voltage of the drain terminal is not less than a third threshold, the third comparator enables a third comparison signal. The gate driving circuit provides a gate voltage to a gate terminal of the synchronous rectification transistor based on the first comparison signal, the second comparison signal, and the third comparison signal.

IPC Classes  ?

• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power conversion circuit includes a transformer, a resonant capacitor, a resonant inductor, a high-side transistor, a low-side transistor, and a control circuit. The transformer includes a primary coil and a secondary coil. The primary coil, the resonant capacitor, and the resonant inductor are connected in series between a switch node and a ground. The high-side transistor provides an input voltage to a switch node based on the high-side driving signal. The low-side transistor couples the switch node to the ground based on the low-side transistor. The control circuit operates in a pulse frequency modulation mode to generate the high-side transistor and the low-side transistor with a switch frequency. When the switch frequency exceeds the first threshold, the control circuit switches from the pulse frequency modulation mode to the pulse width modulation mode.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A control circuit for reducing reverse recovery charge in a switching converter includes a first control signal configured to switch a first transistor, a second control signal configured to switch a second transistor, and an auxiliary control signal configured to switch an auxiliary transistor. A first terminal and a second terminal of the first transistor are coupled in parallel to a first terminal and a second terminal of the auxiliary transistor. The first transistor and the second transistor are coupled to a switching node, configured to periodically switch an inductor to convert an input voltage into an output voltage. A delay time exists between the time when the auxiliary control signal is deactivated and the time when the first control signal is deactivated. The auxiliary control signal is deactivated after the second control signal is activated.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A switch circuit with current sensing functionality includes: a first and second switch, coupled between a first and second terminal of the switch circuit, and configured to control a conductive state between the first and second terminal according to a control signal; and a current sensing circuit configured to sense a first switch current flowing through the first switch. The current sensing circuit includes: a third switch, a gate and a source of the third switch being coupled in parallel with the first switch to generate a third switch current; a first error amplifier circuit configured to control a drain voltage of the third switch to track a drain voltage of the first switch through feedback, thereby making the third switch current positively correlated to the first switch current; and a current-to-voltage conversion circuit configured to generate a sensing voltage based on the third switch current.

IPC Classes  ?

• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Abstract

A power source circuit includes: a first and a second multifunctional pins, configured for communication and temperature sensing. A temperature sensing component is coupled between the first and second multifunctional pins. In a connection detection mode, a connection detection current is provided through the first and/or second multifunctional pin to detect whether a power sink circuit is connected to the power source circuit. The power sink circuit includes a pull-down resistor couple to the first and/or second multifunctional pin for determining whether the power source circuit is connected to the power sink circuit. When the power sink circuit is connected to the power source circuit, in a temperature sensing mode, the first and second multifunctional pins are configured into a temperature sensing configuration to generate an electrical characteristic on the temperature sensing component, and to obtain the electrical characteristic through the first and/or second multifunctional pin, thereby performing temperature sensing.

IPC Classes  ?

• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
• H02M 1/00 - Details of apparatus for conversion

Abstract

A power conversion circuit includes a transformer, a resonant capacitor, a high-side transistor, a low-side transistor, and a control circuit. The transformer includes a primary coil and a secondary coil, and the primary coil is coupled between a switch node and a resonant node. The resonant capacitor is coupled between the resonant node and a ground. The high-side transistor provides an input voltage to the switch node based on a high-side driving signal. The low-side transistor couples the switch node to the ground based on a low-side driving signal. The control circuit generates the high-side driving signal and the low-side driving signal. When the control circuit executes a startup process, the control circuit discharges the resonant capacitor.

IPC Classes  ?

• H02M 1/36 - Means for starting or stopping converters
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A conversion control circuit for controlling a stackable multi-phase power converter, the conversion control circuit including: a master transfer terminal, wherein a master transfer trigger signal is coupled to plural master transfer terminals of plural parallel-connected conversion control circuits; and a master transfer circuit configured to generate or receive the master transfer trigger signal through the master transfer terminal, wherein the master transfer trigger signal is generated according to an output voltage or an output current of the output power, or a pulse-width modulation related signal; when the master transfer trigger signal switches to an enabled state, the conversion control circuits perform a phase sequence swapping procedure, which includes: the master transfer circuit triggering a transfer of a master role from the stackable sub-converter originally acting as the master circuit to another stackable sub-converter of the stackable sub-converters.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A bandgap reference voltage generation circuit includes two bipolar junction transistors biased at different current densities to generate a base-emitter voltage difference, and to determine a negative temperature coefficient current. The circuit further includes a delta-voltage sensing resistor and a feedback circuit to ensure that the voltage drop across the delta-voltage sensing resistor includes the voltage difference, thereby generating a positive temperature coefficient current. The positive and negative temperature coefficient currents are combined to bias an output resistor, generating an output current with low-order temperature compensation. A multi-stage compensation circuit further generates a compensation current, which is injected into a tap of the output resistor to form a bandgap reference voltage with high-order temperature compensation. The compensation current varies with temperature and exhibits at least three stages of temperature coefficient.

IPC Classes  ?

• G05F 3/26 - Current mirrors

Abstract

A class-D amplifier includes a loop filter, a PWM generator coupled to the loop filter, a first multiplexer coupled to the PWM generator, a second multiplexer coupled to the PWM generator, and a power stage coupled to the first multiplexer and the second multiplexer. The loop filter is used to generate positive and negative LPF signals according to first and second analog signals, and first and a second feedback signals. The PWM generator is used to generate positive and negative PWM signals according to the positive and negative LPF signals respectively. The first and second multiplexer are used to output first and second MUX signals selected from a signal group. The power stage is used to generate a positive output signal to a positive output terminal according to the first MUX signal, and a negative output signal to a negative output terminal according to the second MUX signal.

IPC Classes  ?

• H03F 3/217 - Class D power amplifiersSwitching amplifiers
• H03F 3/45 - Differential amplifiers

Abstract

A multi-level boost power converter circuit includes: at least two high-side switches; at least two low-side switches; a first capacitor; an inductor; and a control circuit configured to generate plural operation signals. The first end of the first capacitor is coupled between the at least two high-side switches, and the second end of the first capacitor is coupled between the at least two low-side switches. One end of the inductor is coupled to the input voltage, and the other end of the inductor is coupled to an inductor switching node, which is connected to either the first or second end of the first capacitor. The plural operation signals are configured to control the at least two high-side switches and the at least two low-side switches, thereby switching the voltage at the inductor switching node between a first divided voltage of the output voltage and the output voltage, or between the first divided voltage of the output voltage and a reference level.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

The present invention provides an apparatus having an inductor and a high thermal conductivity frame, and a manufacturing method thereof. The apparatus comprises: an inductor having at least two internal conductors, the inductor being embedded in magnetic powder material; and a frame made of a high thermal conductivity material, the frame including a top plate located above the at least two internal conductors, bottom plate located below the at least two internal conductors, and at least one connecting bar between the top plate and the bottom plate, with the frame embedded within the magnetic powder material; wherein the apparatus is disposed above an electronic component and is in contact with the electronic component through the bottom plate of the frame.

IPC Classes  ?

• H01F 27/22 - Cooling by heat conduction through solid or powdered fillings
• H01F 27/06 - Mounting, supporting, or suspending transformers, reactors, or choke coils
• H01F 27/255 - Magnetic cores made from particles
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

A power conversion circuit includes a transformer, a resonant capacitor, a high-side transistor, a low-side transistor, and a control circuit. The transformer includes a primary coil and a secondary coil, and the primary coil is coupled between a switch node and a resonant node. The resonant capacitor is coupled between the resonant node and a ground. The high-side transistor provides an input voltage to the switch node based on a high-side driving signal. The low-side transistor couples the switch node to the ground based on a low-side driving signal. The control circuit generates the high-side driving signal and the low-side driving signal. When the power converting circuit starts up, the control circuit generates a precharge signal to precharge the resonant capacitor.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A conversion control circuit for controlling a stackable multiphase power converter, wherein the stackable multiphase power converter includes plural stackable sub-converters, each of which includes a power stage circuit and a conversion control circuit. The conversion control circuit includes: a synchronization terminal, through which a synchronization signal is transmitted and received among the plurality of synchronization terminals of the plural conversion control circuits; and a fault indication signal or status, where plural pulses of the synchronization signal have a fault indication status. When at least one of the plural stackable sub-converters experiences a fault, the fault indication signal or status indicates and controls the conversion control circuit to enter a fault operation. The fault operation includes: the fault indication signal or the fault indication status disables a faulty one of the plural stackable sub-converters, and one of the non-faulty ones among the plural stackable sub-converters takes over.

IPC Classes  ?

• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A power conversion circuit converting an input voltage into an output voltage includes a transformer, a resonant capacitor, a high-side transistor, a low-side transistor, and a control circuit. The transformer includes a primary coil and a secondary coil. The resonant capacitor and the primary coil are coupled in series between a switch node and a ground, and a resonant current flows through the resonant capacitor. The high-side transistor is coupled between the input voltage and the switch node, and the low-side transistor is coupled between the switch node and the ground. The control circuit drives the high-side transistor and the low-side transistor based on the output voltage and the resonant current. When the resonant current reaches a first threshold, the control circuit turns off the low-side transistor so that the high-side transistor achieves zero-voltage switching.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/38 - Means for preventing simultaneous conduction of switches
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A power conversion system includes: a rectifier for rectifying an AC input voltage to generate a rectified voltage; a power stage circuit coupled to the rectifier; a sensing circuit coupled between a multiplex pin and either the AC input voltage or the rectified voltage and configured to generate a multiplexed sensing signal; and a control circuit for performing operations for over-temperature protection and brown-out protection during respective over-temperature and brown-out protection periods based on the status of the multiplexed sensing signal. The control circuit includes: the multiplex pin; and a current source and a bias switch, serially coupled to the multiplex pin. During the over-temperature protection period, the bias switch is conductive to provide a bias current to the sensing circuit to generate a temperature sensing signal. Outside the over-temperature protection period, the bias switch is non-conductive to stop providing the bias current, thereby generating an input voltage sensing signal.

IPC Classes  ?

• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/32 - Means for protecting converters other than by automatic disconnection

Abstract

A spread spectrum control circuit generates a pulse-width modulation (PWM) signal with a switching frequency to control a switching power converter. The switching power converter includes a power stage, which includes an inductor and at least one switch coupled to each other, and the at least one switch is controlled by the PWM signal to convert an input voltage to an output voltage. The spread spectrum control circuit includes: a spread spectrum adjustment circuit, for generating a spread spectrum adjustment signal based on operating parameters of the switching power converter, thereby controlling the switching frequency exhibiting spread spectrum characteristics; and a PWM circuit, for adaptively adjusting a spread spectrum adjustment parameter of the spread spectrum characteristic according to the spread spectrum adjustment signal, such that the spread spectrum adjustment parameter are adaptively adjusted with the changes in the operating parameters, thereby generating the PWM signal exhibiting spread spectrum characteristics.

IPC Classes  ?

• H03K 3/012 - Modifications of generator to improve response time or to decrease power consumption
• H03K 3/017 - Adjustment of width or dutycycle of pulses

Abstract

The present invention provides an integrated package structure with an inductor and an integrated circuit and a manufacturing method thereof. The integrated package structure includes: a substrate with a predetermined circuit layout; an integrated circuit positioned on the substrate, wherein the integrated circuit is joined to the substrate in a flip-chip configuration, and a joint between the integrated circuit and the substrate is encapsulated by a covering material, with a back surface of the integrated circuit exposed; and an inductor, positioned above the integrated circuit, wherein a lower surface of the inductor is connected to the back surface of the integrated circuit, and at least a portion of a contact area between the inductor's lower surface and the back surface of the integrated circuit is free from encapsulation material.

IPC Classes  ?

• H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
• H01L 21/3105 - After-treatment
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01L 23/367 - Cooling facilitated by shape of device
• H01L 23/498 - Leads on insulating substrates
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

A power conversion circuit includes a high-side transistor, a low-side transistor, and a driving circuit. The high-side transistor provides an input voltage to a switch node based on a first signal. The low-side transistor couples the switch node to a ground based on a second signal, and is deposited in an isolation layer. The driving circuit generates the first signal, the second signal, and the third signal, provides a third signal to the isolation layer, and generates the third signal based on the first signal and the second signal.

IPC Classes  ?

• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
• H10D 84/00 - Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers

Abstract

An inductor module includes a magnetic material, at least one internal conductor and a thermal conductive frame. The at least one internal conductor is placed within the magnetic material. The thermal conductive frame is placed in the magnetic material and includes an upper structure, a lower structure and a connecting bar. The connecting bar connects the upper structure and the lower structure.

IPC Classes  ?

• H01F 27/08 - CoolingVentilating
• H01F 27/24 - Magnetic cores
• H01F 27/28 - CoilsWindingsConductive connections
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils

Abstract

A power converter includes a transformer, a resonant capacitor, a high-side transistor, a low-side transistor, a rectification circuit, a feedback circuit, a detection circuit, and a control circuit. The transformer includes a primary coil coupled to a switch node and a secondary coil. The resonant capacitor is coupled to the primary coil. The high-side transistor provides an input voltage to the switch node, and the low-side transistor couples the switch node to the ground. The rectification circuit converts the energy of the secondary coil into an output voltage. The feedback circuit compares the output voltage with a reference voltage to generate a compensation signal. The detection circuit generates a current detection signal and a voltage detection signal. The control circuit drives the high-side transistor and the low-side transistor based on the current detection signal, the voltage detection signal, the compensation signal, and the input signal.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/38 - Means for preventing simultaneous conduction of switches
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A gate drive circuit includes a voltage summer, a driver, a power transistor and a resistor. The voltage summer includes a first input terminal for receiving a reference voltage, a second input terminal for receiving a common source voltage, and an output terminal for generating a summed voltage according to the common source voltage and the reference voltage. The driver includes a first input terminal coupled to the output terminal of the voltage summer, a second input terminal for receiving a pulse width modulation (PWM) signal, and an output terminal for generating a gate voltage according to the summed voltage and the pulse width modulation signal. The power transistor includes a first terminal, a second terminal, and a control terminal coupled to the output terminal of the driver. The resistor is coupled between the second terminal of the power transistor and a ground terminal.

IPC Classes  ?

• H03K 17/0812 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
• H03K 17/08 - Modifications for protecting switching circuit against overcurrent or overvoltage

Abstract

A gate driver circuit provides a soft-start current to a gate of a power switch during a soft-start period to soft-start the power switch. The gate driver circuit includes: a first current mirror circuit, configured to mirror a reference current according to a mirror ratio to generate a mirror output current; and a path switch coupled on a signal path between the mirror output current and the soft-start current. The soft-start current is generated according to the mirror output current. The path switch is configured to turn off the signal path when the power switch is off. The mirror ratio of the first current mirror circuit is reduced during a predetermined period in the soft-start period to compensate for a spike caused by the path switch being turned on during the soft-start period, such that the soft-start current is prevented from surging during the soft-start period.

IPC Classes  ?

• H03K 17/16 - Modifications for eliminating interference voltages or currents

Abstract

An integrated packaging module includes an integrated circuit packaging module and an inductor. The integrated circuit packaging module includes a substrate, a chip, a block terminal and an encapsulation material. The chip is disposed on the substrate and is connected to the substrate in a flip-chip manner, with the back of the chip facing upward. The block terminal is disposed on the base substrate. The encapsulation material covers the substrate and exposes the back of the chip and the upper surface of the block terminal. The inductor is disposed above the integrated circuit packaging module and includes an electrical contact coupled to the block terminal.

IPC Classes  ?

• H01L 23/367 - Cooling facilitated by shape of device
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01L 23/498 - Leads on insulating substrates
• H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
• H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits

Abstract

A control circuit for a resonant flyback power converter includes high-side and low-side signals to control respective high-side and low-side transistors. It uses a negative current signal from an auxiliary winding related to its cross-voltage. The circuit generates a threshold and a sensing signal based on the activation and deactivation of the high-side and low-side transistors respectively, and a triggering signal by comparing the sensing signal with the threshold. The high-side and low-side transistors switch a primary winding through a resonant capacitor, generating an output voltage through a secondary winding. The pulse width of the low-side signal is adjusted based on the triggering signal to achieve zero voltage switching (ZVS) of the high-side transistor.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power conversion circuit includes a resonant capacitor, a transformer, a high-side transistor, a low-side transistor, and a control circuit. The resonant capacitor is coupled to the switch node. The transformer includes a primary coil coupled to the resonant capacitor and a secondary coil. The high-side transistor and the low-side transistor couples the input voltage and the ground to the switch node. The control circuit generates a first signal in response to the high-side transistor being turned on, generates a second signal in response to the high-side transistor and the low-side transistor being both turned off, and generates a third signal by comparing the second signal with a voltage threshold corresponding to the first signal. The control circuit adjusts the on-time of the low-side transistor based on the third signal, so that the high-side transistor achieves zero-voltage switching.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A polysilicon-insulator-polysilicon (PIP) structure includes: a first polysilicon region formed on a substrate; a first insulation region formed outside one side of the first polysilicon region and adjoined to the first polysilicon region in a horizontal direction; and a second polysilicon region formed outside one side of the first insulation region. The first polysilicon region, the first insulation region and the second polysilicon region are adjoined in sequence in the horizontal direction. The second polysilicon region is formed outside the first insulation region by a first self-aligned process step, and the first insulation region is formed outside the first polysilicon region by a second self-aligned process step.

IPC Classes  ?

• H01L 21/28 - Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups
• H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
• H10D 1/00 - Resistors, capacitors or inductors
• H10D 1/68 - Capacitors having no potential barriers
• H10D 30/01 - Manufacture or treatment
• H10D 30/60 - Insulated-gate field-effect transistors [IGFET]
• H10D 64/00 - Electrodes of devices having potential barriers
• H10D 64/66 - Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
• H10D 84/80 - Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups or , e.g. integration of IGFETs

Abstract

A hybrid switching converter includes plural switches and a control circuit. The plural switches include first to (K+1)th high-side switches. A first terminal of a first flying capacitor is coupled to an input voltage through the first high-side switch, and first terminals of each of second to Kth flying capacitors are respectively coupled to the first terminal of the preceding flying capacitor through the second to Kth high-side switches. Second terminals of each of the first to Kth flying capacitors are respectively electrically connected to second terminals of first to Kth inductors at first to Kth switching nodes. A first terminal of the (K+1)th high-side switch is electrically connected to the first terminal of the Kth flying capacitor, and a second terminal of the (K+1)th high-side switch is electrically connected to a second terminal of a (K+1)th inductor at a (K+1)th switching node. The control circuit generates plural control signals to control the plural switches for periodic switching.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A switching power converter includes: a power stage circuit for converting an input voltage to an output voltage by switching an inductor with a synchronous or an asynchronous mode; an error amplifier to generate an error amplified signal; a modulation comparator for generating a primary modulation signal by comparing the error amplified signal and a ramp signal; a pulse skipping comparator for generating a pulse skipping control signal by comparing the error amplified signal and a skipping reference signal; and a switching control unit for masking the primary modulation signal by the pulse skipping control signal. During the synchronous mode, the skipping reference signal has a predetermined reference level. At the beginning after the synchronous mode is changed to the asynchronous mode, the skipping reference signal turns to the predetermined reference level superposing a compensation reference level, and subsequently the skipping reference signal gradually returns to the predetermined reference level.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

The present invention provides a high-side switch device having split gates. The high-side switch device includes: at least one tie-gate high-side switch device, each having a split gate independently connected to a gate; and at least one tie-source high-side switch device, each having a split gate independently connected to a source. The at least one tie-gate high-side switch device and the at least one tie-source high-side switch device are electrically connected in parallel. The quantity ratio of the at least one tie-gate high-side switch device to the at least one tie-source high-side switch device can be adjusted to modulate the Miller capacitance of the high-side switch device having split gates.

IPC Classes  ?

• H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
• H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
• H01L 27/088 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
• H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
• H01L 29/66 - Types of semiconductor device

Abstract

A control circuit adapted to a flyback converter includes a feedback circuit, a first current mirror, a second current mirror, a compensation resistor, and a pole adjuster. The feedback circuit generates a feedback current based on the output voltage from the flyback converter. The first current mirror maps the feedback current to a first mapping current. The second current mirror maps the first mapping current to a second mapping current. The compensation resistor is coupled to an internal node. The second mapping current flows through the compensation resistor to generate an internal voltage at the internal node. The pole adjuster generates a compensation voltage based on the internal voltage. The flyback converter raises the output power of the output voltage as the compensation voltage increases.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/32 - Means for protecting converters other than by automatic disconnection

Abstract

A power conversion circuit is provided, which includes a transformer, a high-side switch, a low-side switch, and a control circuit. The transformer includes a primary coil and a secondary coil. The secondary coil generates the output voltage of the power conversion circuit. The high-side switch and the low-side switch are coupled to the primary coil and act as a half-bridge circuit to magnetize and demagnetize the transformer. The control circuit individually turns on the high-side switch and the low-side switch based on a feedback signal and a current detection signal to regulate the output voltage. The feedback signal is related with the output voltage, and the current detection signal is indicative of the current flowing through the primary coil. The control circuit further generates a power signal related to the output current of the power conversion circuit.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Abstract

A manufacturing method of a semiconductor integrated structure having a high voltage device, a low voltage device and a capacitor, includes: forming a bottom thermal oxide layer on a substrate; forming a chemical vapor deposition (CVD) oxide layer; forming a poly silicon hard mask layer; etching the poly silicon hard mask layer to form a high voltage poly silicon hard mask and a first electrode plate simultaneously; etching the CVD oxide layer and using the high voltage poly silicon hard mask and the first electrode plate as etching barrier layers to form a high voltage CVD oxide region and a capacitor CVD oxide region simultaneously; etching the bottom thermal oxide layer and using the high voltage poly silicon hard mask and the first electrode plate as the etching barrier layers to form a high voltage bottom thermal oxide region and a bottom thermal oxide region simultaneously.

IPC Classes  ?

• H01L 21/8234 - MIS technology
• H01L 21/265 - Bombardment with wave or particle radiation with high-energy radiation producing ion implantation

Abstract

A manufacturing method of a power device having a dual polysilicon gate, including: forming a well in a substrate; forming a gate oxide layer; forming a polysilicon gate layer; forming a photo resist layer on the polysilicon gate layer to define a reduced surface field region, an enhanced drift region, and a field plate groove; etching the polysilicon gate layer to form the field plate groove; implanting a plurality of first and second conductivity type dopants in the substrate to form the reduced surface field region and the enhanced drift region; forming a field plate region in the field plate groove; forming another polysilicon gate layer which connects and overlays the polysilicon gate layer and the field plate region; and etching the polysilicon gate layers to form a first poly silicon gate region and a second poly silicon gate region, so as to form the dual polysilicon gate.

IPC Classes  ?

• H01L 29/40 - Electrodes
• H01L 21/266 - Bombardment with wave or particle radiation with high-energy radiation producing ion implantation using masks
• H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
• H01L 21/308 - Chemical or electrical treatment, e.g. electrolytic etching using masks
• H01L 29/66 - Types of semiconductor device
• H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate

Abstract

A conversion control circuit controls a resonant power converter and a first output voltage generated by a power factor correction (PFC) circuit. The resonant power converter generates a second output voltage based on the first output voltage. The conversion control circuit includes: a first transconductance circuit for generating a first signal based on a proportional output voltage related to the second output voltage; a second transconductance circuit for generating a second signal based on an input-related signal, wherein the input-related signal is related to a peak value of an input voltage of the PFC circuit; and a current control circuit for generating a third signal based on the first signal and the second signal. The third signal is for rendering the first output voltage such that the first output voltage decreases as the second output voltage decreases and also decreases as the input voltage decreases.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A clock signal duty ratio correction circuit includes: a period indication signal generation circuit configured to operably generate a period indication signal according to a clock signal, wherein a period indication level of the period indication signal is correlated with a period time of the clock signal; a first ramp signal generation circuit configured to operably generate a first ramp signal according to the clock signal; and a clock signal regeneration circuit configured to operably generate a clock regeneration signal according to a triggering of the clock signal and according to a comparison between the first ramp signal and the period indication level, such that the clock regeneration signal has a target duty ratio; wherein a slope of the first ramp signal is correlated with the target duty ratio.

IPC Classes  ?

• H03K 5/156 - Arrangements in which a continuous pulse train is transformed into a train having a desired pattern

Abstract

A current buffer includes: a current replication circuit for generating a first intermediate current at a first node and a second intermediate current at a second node according to an input current; a first impedance biasing circuit for providing a first input impedance at the first node and generating an output current according to a current flowing through the first node; a second impedance biasing circuit for providing a second input impedance at the second node; and a feedforward capacitor coupled between the first node and the second node. The first input impedance is lower than the second input impedance, such that a current gain between the output current and the input current has a zero and a pole which are related to the feedforward capacitor and the second input impedance. The zero has a lower frequency than the pole.

IPC Classes  ?

• H03F 3/45 - Differential amplifiers

Abstract

A Power-on Reset (POR) system includes: an SR latch circuit, powered by a supply voltage, for generating a POR signal according to the supply voltage and an enable signal; and at least one operating circuit, powered by the supply voltage. At least one state circuit in the operating circuit is reset by the POR signal. When the supply voltage starts up, an output terminal of the SR latch circuit has a predetermined state, such that after the supply voltage starts up and before the enable signal is enabled for a first time, the POR signal is in a reset state to reset the at least one state circuit in the operating circuit. After the supply voltage starts up and the enable signal is enabled for the first time, the POR signal turns to a non-reset state, and the operating circuit is enabled to operate according to the enable signal.

IPC Classes  ?

• H03K 17/22 - Modifications for ensuring a predetermined initial state when the supply voltage has been applied
• H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

Abstract

A control circuit controls a multiphase power converter which includes plural power stage circuits, so as to convert an input power to an output power. The control circuit includes: a current sensing circuit, for sensing an output current for generating a current sensing signal; a transient detection circuit, for generating a transient indication signal by an output voltage; and a phase decision circuit, for generating a phase decision signal by a processed sensing signal and the transient indication signal, for determining an activated phase number. The phase decision circuit includes: a low-pass filter, for generating a low-pass-filtered signal by low-pass: filtering the current sensing signal; and a multiplexer, for adaptively selecting the current sensing signal or the low-pass-filtered signal to be the processed sensing signal according to the transient indication signal.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A clamping circuit for clamping its voltage difference between its first and second terminals includes: an offset operational trans-conductance amplification (OTA) circuit for generating an output current according to a differential mode voltage between its first and second terminals which have a common mode offset voltage; and an amplifier circuit for generating a first terminal voltage according to the output current of the offset OTA circuit, so as to clamp the voltage difference of the clamping circuit to not exceeding a clamping voltage level. The offset OTA circuit includes a first and a second offset OTA sub-circuits, which have common mode offset voltages, and an auxiliary offset circuit. The common mode offset voltage of the offset OTA circuit is equal to a sum of the common mode offset voltages of the first and the second offset OTA sub-circuit and an offset voltage of the auxiliary offset circuit.

IPC Classes  ?

• H03K 17/00 - Electronic switching or gating, i.e. not by contact-making and -breaking
• H03F 3/45 - Differential amplifiers
• H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
• H03K 17/16 - Modifications for eliminating interference voltages or currents

Abstract

A power convertor includes a resonant capacitor, a transformer, a high-side transistor, a low-side transistor, a control circuit, and a rectifying circuit. The resonant capacitor is coupled between a resonant node and a ground. The transformer includes a primary coil coupled between a switch node and the resonant node and a secondary coil. The high-side transistor provides an input voltage to the switch node and the low-side transistor couples the switch node to the ground. The control circuit operates in either one of a flyback mode and a non-flyback mode, and drives the high-side transistor and the low-side transistor. When the control circuit operates in the resonant mode, the rectifying circuit full-wave rectifies the energy of the secondary coil to generate the output voltage.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power supply system with power factor correction (PFC) comprises an AC rectifier, a power factor correction (PFC) conversion circuit, a DC-DC converter, a protocol power delivery (PD) interface and a controller. The AC rectifier is used to rectify the AC input power to generate rectified power. The PFC conversion circuit is used to perform PFC conversion on the rectified power to generate converted power. The DC-DC converter is used to perform DC-DC conversion on the converted power to generate adapter output power. The protocol power delivery interface is used to determine the adapter output power according to a protocol information and control a power path switch to deliver the adapter output power to a power supply pin. The controller determines the converted voltage according to the rectified voltage and the adapter output voltage.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power supply system includes a power factor correction converter circuit and an isolated power converter circuit, wherein the power factor correction converter circuit corrects the power factor of a rectified power to generate a first output power, and the isolated power converter circuit converts the first output power to generate a second output power. The isolated power converter circuit includes a transformer, and the transformer includes a primary winding, a secondary winding, and an auxiliary winding. The auxiliary winding generates an auxiliary voltage which is related to the second output power. When the auxiliary voltage is lower than a disabled threshold, indicating that the voltage of the second output power is lower than a threshold, the power factor correction converter circuit provides a bypassing connection from the rectified power to the first output power and stops correcting the power factor of the rectified power.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 1/10 - Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power convertor includes a resonant capacitor, a transformer, a high-side transistor, a low-side transistor, a control circuit, and a rectification circuit. The resonant capacitor is coupled between a resonant node and a ground. The transformer includes a primary coil coupled between a switch node and the resonant node and a secondary coil. The high-side transistor provides an input voltage to the switch node and the low-side transistor couples the switch node to the ground. The control circuit drives the high-side transistor and the low-side transistor based on the feedback voltage, and operates in either a flyback mode or a non-flyback mode based on the output voltage. When the output voltage is lower than the output threshold, the control circuit operates in the flyback mode and the rectification circuit half-wave rectifies the energy of the secondary coil to generate the output voltage.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/38 - Means for preventing simultaneous conduction of switches
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A conversion control circuit capable of recycling energy is configured to control an isolated power converter, converting an input power to generate an output power. The conversion control circuit generates an optocoupler current for a photodiode included in the optocoupler based on a control-related signal, transmitting the information of the control-related signal between the primary and secondary sides of the power converter via optical coupling to achieve power conversion. The conversion control circuit comprises a controllable current source circuit and a power conversion circuit. The controllable current source circuit generates a controllable current based on the control-related signal, wherein at least a portion of the controllable current is coupled to provide the optocoupler current. The power conversion circuit converts at least a portion of the optocoupler current into a supply power for an operating circuit, thereby recycling the energy generated by the optocoupler current.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A high voltage complementary metal oxide semiconductor (CMOS) device includes: a semiconductor layer, plural insulation regions, a first N-type high voltage well and a second N-type high voltage well, which are formed by one same ion implantation process, a first P-type high voltage well and a second P-type high voltage well, which are formed by one same ion implantation process, a first drift oxide region and a second oxide region, which are formed by one same etching process by etching a drift oxide layer; a first gate and a second gate, which are formed by one same etching process by etching a polysilicon layer, an N-type source and an N-type drain, and a P-type source and a P-type drain.

IPC Classes  ?

• H10D 84/85 - Complementary IGFETs, e.g. CMOS
• H10D 30/01 - Manufacture or treatment
• H10D 30/65 - Lateral DMOS [LDMOS] FETs
• H10D 84/01 - Manufacture or treatment
• H10D 84/03 - Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology

Abstract

A power converting circuit includes an input end, two output ends, three nodes, a first switch coupled between the input end and the first node, a second switch coupled between the second node and a ground level, a third switch coupled between the third node and the ground level, a fourth switch coupled between the third node and the first output end, a fifth switch coupled between the second node and the second output end, a path control device, an inductor coupled between the first node and the third node, a first capacitor coupled between the first output end and the ground level, a second capacitor coupled between the second output end and the ground level, and a control circuit. The path control device adjusts the voltage difference between the first and the second nodes. The control circuit provides control signals for selectively turning on or turning off the switches.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode

Abstract

A method for controlling a motor controller is provided. The method includes, in a first mode: transmitting a control signal from a fan controller to a first motor controller through a first line. The method further includes, in the first mode, transmitting a control signal from a fan controller to a first motor controller through a first line. The method further includes, in the first mode, setting a voltage of the second line to a specific level of voltage to inform the first motor controller to enter a second mode using the fan controller. The method further includes, in the second mode, applying an Inter-Integrated Circuit (I2C) protocol to communicate between the fan controller and the first motor controller using the first line as a serial clock line (SCL) and using the second line as a serial data line (SDA).

IPC Classes  ?

• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation
• G06F 13/40 - Bus structure

Abstract

A combination structure of semiconductor deep trench devices includes: a deep trench insulator device, which includes at least one deep trench ring unit, wherein the deep trench ring unit includes: a deep trench ring, a first dielectric side wall layer and a first poly silicon fill region; and a deep trench capacitor device, which includes a plurality of deep trench capacitor units and a cathode, wherein each of the deep trench capacitor units includes: a deep trench hole; a second dielectric side wall layer; and a second poly silicon fill region. The deep trench hole is formed by etching a semiconductor substrate with a same etch process step with the deep trench ring. The first dielectric side wall layer and the second dielectric side wall layer is formed by a same oxide growth process step.

IPC Classes  ?

• H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
• H01L 27/02 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
• H01L 27/08 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind
• H01L 29/66 - Types of semiconductor device
• H01L 29/94 - Metal-insulator-semiconductors, e.g. MOS

Abstract

A semiconductor package structure includes: an interposer board, including a top side and a bottom side; a first ball grid array located on the bottom side of the interposer board, the first ball grid array including plural first soldering balls, wherein the first ball grid array provides a signal connection function between the interposer board and an external printed circuit board; and a second ball grid array located on the bottom side of the interposer board, the second ball grid array including plural second soldering balls, which are positioned within gaps between the first soldering balls on the bottom side.

IPC Classes  ?

• H01L 23/498 - Leads on insulating substrates
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or

Abstract

A switching converter circuit for converting an input voltage to an output voltage includes: a feedback compensation circuit for producing a feedback compensation signal according to a difference between a feedback signal related to the output voltage and a reference signal; a modulation circuit for generating a modulation signal in accordance with the feedback compensation signal and a ramp signal; a power stage circuit for switching an inductor according to the modulation signal; and a ramp generator circuit for producing the ramp signal according to the input voltage, the output voltage and the modulation signal. The ramp signal includes: an anterior ramp signal and a posterior ramp signal. An absolute value of a slope of the posterior ramp signal gradually decreases as time increases. A starting time point of the modulation signal is decided by an intersection time point between the posterior ramp signal and the feedback compensation signal.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A switching converter circuit includes: a power stage circuit and a current sensing circuit. The power stage circuit includes plural power switches, which include a circulation switch. The circulation switch is coupled in parallel to an inductor. When the circulation switch is turned ON, the inductor and the circulation switch constitute a circulation circuit. The current sensing circuit generates a current sensing signal. The power switches switch a switching node voltage at a switching node, thereby converting an input power to an output power. The circulation switch is controlled to be ON within a circulation period in each switching cycle, so that the switching node voltage is conducted to the output voltage. In a steady state, the inductor current circulates within the circulation circuit with a DC current level. The DC current level is lower than a peak of the inductor current.

IPC Classes  ?

• H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/14 - Arrangements for reducing ripples from DC input or output

Abstract

A conversion control circuit for controlling a resonant power converter which includes a high-side and a low-side transistor which are coupled to convert an input voltage into an output voltage, and a resonant circuit including at least one resonant inductor and a resonant capacitor. The conversion control circuit includes: a sensing circuit for sensing a resonant-related parameter related to the resonance produced by the resonant circuit to generate a sensed signal; and a PWM control circuit for generating a high-side and a low-side driving signal according to the sensed signal and a feedback signal related to the output voltage. When the feedback signal falls below a low-power threshold, the resonant power converter enters a burst OFF period, during which both the high-side and the low-side transistors are turned OFF. A lower limit of the burst OFF period is equal to a switching period of the high-side and the low-side driving signals.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A resonant power conversion circuit includes a resonant capacitor, a transformer, a high-side transistor, a low-side transistor, a first current detection circuit, an integrator, and a full-wave rectifying circuit. The resonant capacitor is coupled between a resonant node and a ground. The transformer includes a primary coil coupled between a switch node and the resonant node. The high-side transistor provides an input voltage to the switch node and the low-side transistor couples the switch node to the ground. The first current detection circuit generates a current detection signal based on a voltage of the resonant node. The integrator generates an integrating signal based on the current detection signal. The full-wave rectification circuit full-wave rectifies the integral signal to generate a rectified signal.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The present disclosure provides a package structure. The package structure includes a lead frame, a first flip-chip disposed over the lead frame, a first dummy chip affixed on the first flip-chip by a non-conductive adhesive layer to serve as heat dissipation paths for the first flip-chip, and an encapsulant encapsulating the first flip-chip and the first dummy chip.

IPC Classes  ?

• H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01L 23/42 - Fillings or auxiliary members in containers selected or arranged to facilitate heating or cooling
• H01L 25/065 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group

Abstract

A resonant power converter includes a resonant capacitor, a transformer, a high-side transistor, a low-side transistor, a divider, a full-wave rectification device, a control circuit, and a rectifying circuit. The resonant capacitor is coupled between a resonant node and a ground. The transformer includes a primary coil coupled between a switch node and the resonant node and a secondary coil. The high-side transistor provides an input voltage to the switch node and the low-side transistor couples the switch node to the ground. The divider divides a voltage of the resonant node to generate a divided signal. The full-wave rectification device full-wave rectifies the divided signal to generate a full-wave rectified signal. The control circuit compares the full-wave rectified signal to a feedback voltage related to an output voltage to drive the high-side transistor and the low-side transistor. The rectifying circuit generates the output voltage.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 1/38 - Means for preventing simultaneous conduction of switches
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

An intelligent power module includes: an encapsulating material structure; a lead frame which is at least partially encapsulated inside the encapsulating material structure, wherein all portions of the lead frame encapsulated inside the encapsulating material structure are at a same planar level; and a heat dissipation structure, which is connected to the lead frame.

IPC Classes  ?

• H01L 23/495 - Lead-frames
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01L 25/065 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group

Abstract

A switching regulator includes: a power stage circuit configured to operably control a power switch therein according to a pulse width modulation signal to switch an inductor coupled to a phase node, so as to convert an input voltage to an output voltage; and a control circuit configured to operably determine an equivalent capacitance adjustment procedure to enter or sustain an enabled state according to a phase node voltage at the phase node at an inductor magnetization start time point in a discontinuous conduction mode (DCM) to adjust an equivalent capacitance at the phase node, so as to reduce a voltage across the power switch at another inductor magnetization start time point after the equivalent capacitance adjustment procedure.

IPC Classes  ?

• H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
• H02M 1/00 - Details of apparatus for conversion

Abstract

A resonant power converter includes: a first and a second transistors, configured to form a half-bridge circuit; a resonant circuit including a resonant inductor, a primary winding of a transformer, and a resonant capacitor, which are serially coupled to each other, and wherein the first and the second transistors are configured to switch the resonant circuit to generate a resonant current for converting an input voltage into an output voltage; and a conversion control circuit configured to generate a ramp signal based on the resonant current, and to generate a first drive signal and a second drive signal based on the ramp signal and a compensation signal related to the output voltage. The first drive signal and the second drive signal are respectively used to control the first transistor and the second transistor. During a signal period of the ramp signal, the ramp signal monotonically increases or monotonically decreases.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A bias voltage generator includes an auxiliary winding, a switch circuit, an inductor, a diode, and a capacitor. The switch circuit is coupled to the auxiliary winding at a first node and controlled by a control signal. The inductor is coupled to the switch circuit at a second node and to a ground. The diode is coupled between the second node and a voltage output terminal. The capacitor is coupled between the voltage output terminal and the ground. In response to that the switch circuit is turned on, the inductor is charged by a charge current flowing the switch circuit and the auxiliary winding. In response to that the switch circuit is turned off, the inductor is discharged through a charge current flowing the diode and the capacitor. An output voltage is generated at the voltage output terminal. The second output voltage changes according to the control signal.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

A pulse width modulation control circuit for controlling a power converter circuit includes: a main loop control circuit; and a light-load loop control circuit. The light-load loop control circuit includes a current synthesis circuit configured to generate a synthesized current signal according to an input voltage and a target value of an output voltage and an inductance value of an inductor in a power stage circuit of the power converter circuit. The light-load loop control circuit generates a pulse modulation signal in light-load mode according to the synthesized current signal, to control a duty ratio of the power stage circuit. In the light-load mode, the main loop control circuit enters a power-saving state to reduce the power consumption of the pulse width modulation control circuit. The power-saving state includes: reducing the power consumption of the current sense circuit or stopping the operation of the current sense circuit.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/157 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control

Abstract

A power converter includes a high-side transistor, a low-side transistor, a transformer, a first capacitor, a current detection circuit, a second capacitor, and a current detection resistor. The high-side transistor is coupled between an input voltage and a switching node. The low-side transistor is coupled between the switching node and a ground. The transformer includes a primary coil, and is coupled between the switching node and a first node. The first capacitor is coupled between the first node and the ground. The current detection circuit is connected in parallel with the first capacitor, and includes a second capacitor and a current detection resistor. The second capacitor is coupled to the first node. The current detection resistor is coupled between the second capacitor and the ground.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A power conversion and transmission system includes a power provider unit, a load unit and a cable. The power provider unit includes a power conversion circuit for converting an input power into an intermediate power, and a path switch coupled between the intermediate power and a bus power. The cable includes a power sub-cable, a communication sub-cable, and a ground sub-cable, for coupling the provider-end power, communication, and ground nodes of the power provider unit respectively to the corresponding nodes of the load unit. At an initial time point, voltage the of the provider-end communication node is sensed and recorded as the initial voltage level. At a determination time point, if the difference between the present voltage level of the provider-end communication node and the initial voltage level exceeds a threshold value, a power source limiting operation is initiated.

IPC Classes  ?

• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Abstract

A class-D amplifier for generating an output signal having PWM according to an input signal based on a DC voltage during a normal mode (NM) includes: a first integrator for generating a first integrated signal by integrating the difference of the input signal and a feedback signal during the NM; a final-stage integrator for generating a final-stage integrated signal by integrating the first integrated signal during the NM; a superposition circuit for generating a loop filter signal by buffering the final-stage integrated signal during the NM; and a modulation and driving circuit for generating the output signal by comparing the loop filter signal and a triangle wave. During a clipping mode, the first integrator enters a reset or a hold state, and the final-stage integrator enters the hold state, and the superposition circuit is configured to superimposes the final-stage integrated signal and a feedforward signal to generate the loop filter signal.

IPC Classes  ?

• H03F 3/217 - Class D power amplifiersSwitching amplifiers

Abstract

A pre-bias voltage control circuit includes a flying capacitor, a voltage sensor, and a voltage controlled current source. The voltage sensor is used to generate a sensed capacitor voltage according to a capacitor voltage across the flying capacitor, and includes an inverting input terminal coupled to the flying capacitor, a non-inverting input terminal coupled to the flying capacitor, and an output terminal for outputting the sensed capacitor voltage. The voltage controlled current source is used to charge and discharge the flying capacitor, and includes a reference terminal for receiving a reference voltage, an input terminal coupled to the output terminal of the voltage sensor, a current output terminal coupled to the flying capacitor, and a current return terminal coupled to the flying capacitor. The voltage controlled current source generates a source current to charge the flying capacitor when the sensed capacitor voltage falls below the reference voltage.

IPC Classes  ?

• H02M 1/36 - Means for starting or stopping converters
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A chip package unit includes: a base material; at least one chip, disposed on the base material; a package material, enclosing the base material and the chip; and at least one heat dissipation paste curing layer, formed by curing the heat dissipation paste, on a top side of the package material or a back side of the chip in a printed pattern.

IPC Classes  ?

• H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation
• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement

Abstract

A depletion type vertical discrete NMOS device includes: an N-type epitaxial layer formed on an N-type substrate, wherein the N-type epitaxial layer has a top surface and a bottom surface opposite to each other; a P-type well formed in the N-type epitaxial layer; a gate formed outside and connected with the N-type epitaxial layer; an N-type source formed in the N-type epitaxial layer and in contact with the P-type well; an N-type drain including a part of the N-type substrate, which is formed outside and under the N-type epitaxial layer; and an N-type region formed and connected between the P-type well and the gate, which provides a channel, such that the N-type source and the N-type drain are electrically connected with each other during conduction operation, whereas, the N-type source and the N-type drain are electrically disconnected from each other during non-conduction operation.

IPC Classes  ?

• H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
• H01L 21/265 - Bombardment with wave or particle radiation with high-energy radiation producing ion implantation
• H01L 29/40 - Electrodes
• H01L 29/66 - Types of semiconductor device

Abstract

A buck-boost switching power circuit comprises a bypass control circuit which configured to determine whether the buck-boost switching power circuit operates in a bypass mode according to a bypass enable signal. When the conversion voltage difference between the input voltage and the output voltage is less than a reference voltage, the bypass control circuit controls to electrically connect the input power source with the output power source, and operates the buck-boost switching power circuit in the bypass phase of the bypass mode. Before and/or after the bypass phase, the bypass control circuit respectively controls the buck-boost switching power circuit to operate in a first transition phase and/or a second transition phase. During the first transition phase or the second transition phase, the bypass control circuit controls the output voltage to gradually change towards the input voltage or target voltage, until the conversion voltage difference is less than the first reference voltage or the output voltage equals the target voltage.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

A power supply system with power factor correction, includes: an AC rectifier, a power factor correction (PFC) conversion circuit, an asymmetric half-bridge (AHB) flyback converter and a communication protocol power delivery (PD) interface. When a power level of an adapter output power is lower than a power threshold, and a converted voltage of a converted power is higher than a first voltage threshold, the communication protocol PD interface generates a disable signal to disable a PFC conversion of the PFC conversion circuit, when the PFC conversion is disabled, the PFC conversion circuit operates a bypass coupling operation, as thus, the converted voltage is equal to a rectified voltage of a rectified power.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A method for determining the reference internal impedance of a battery includes the following steps: (a) during a sensing period, sensing a battery voltage, a battery current flowing through the battery, and a battery temperature to obtain a sensing result, thereby determining a depth of discharge (DOD); (b) in step (a), comparing the sensing result with a predetermined threshold to determine whether to accept the sensing result; (c) when the sensing result is accepted, calculating a corresponding battery internal impedance based on the sensing result and the depth of discharge; (d) performing regression analysis on the battery internal impedance and a plurality of previous battery internal impedances to obtain a moving average battery internal impedance corresponding to the depth of discharge; and (e) obtaining a corresponding reference battery internal impedance based on the moving average battery internal impedance.

IPC Classes  ?

• G01R 31/389 - Measuring internal impedance, internal conductance or related variables
• G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
• G01R 31/388 - Determining ampere-hour charge capacity or SoC involving voltage measurements
• H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte

Abstract

The present invention discloses a method of estimating a state of charge (SOC) of a battery and a system thereof. The method of estimating the SOC of the battery includes following steps: calculating a voltage difference (ΔV) using a voltaic gauge based on a battery voltage (VBAT) and an open-circuit voltage (OCV); adaptively adjusting a gain (K) using a gain control engine based on a battery current (IBAT) and a full charged capacity (FCC), wherein the gain (K) is adjusted to generate an adjusted gain (K′); generating a present SOC change (ΔSOC_T) using the voltaic gauge based on the voltage difference (ΔV) and the adjusted gain (K′); and generating a next SOC (SOC_T+1) using an accumulator based on a present SOC (SOC_T) and the present SOC change (ΔSOC_T).

IPC Classes  ?

• G01R 31/3835 - Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
• G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables

Abstract

A battery control parameter estimation system includes sensing, storage, and estimation circuits. The estimation circuit determines an operation model based on an estimated control parameter signal and a battery property signal or an internal reference information. The operation model defines a control parameter, a status parameter, and a relationship therebetween, and performs an estimation operation to generate an estimation result. The estimation operation includes: dividing a limited range into multiple sections to generate multiple control parameter values; sequentially inputting the control parameter values into the operation model to obtain multiple status parameter values; checking whether a determination object satisfy a determination condition; if satisfied, determining the estimation result and ending the estimation operation; if not, taking two control parameter values corresponding to two status parameter values before and after a first crossing of a target value to define a next limited range and performing a next estimation operation.

IPC Classes  ?

• G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
• G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
• G01R 31/388 - Determining ampere-hour charge capacity or SoC involving voltage measurements
• H01M 10/44 - Methods for charging or discharging
• H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte

Abstract

A switched capacitor converter for converting a first voltage into a second voltage and vice versa, includes: a plurality of switches which includes at least four switches, with a first switch included, which is coupled between the first voltage and an inductor switching node; an inductor coupled between the inductor switching node and the second voltage; a flying capacitor coupled to the plurality of switches and configured as a capacitive voltage divider; a current sense circuit for detecting an inductor current and sampling the inductor current during the first switch's turn-on state to generate a sensed current signal; an error amplifier for comparing the sensed current signal with a reference current signal to generate a first amplified signal; and a PWM generator for comparing the first amplified signal with a ramp signal for generating switching control signals to control a first switch current flowing to or from the first voltage.

IPC Classes  ?

• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Abstract

A power conversion system for converting an input power to an output power, includes: a current limit circuit clamping an input current of the output power to be not exceeding an input current limit during a current clamping state; and a charge quantity regulation circuit converting the output power to a temporary storage power in a temporary storage capacitor during a charging mode, wherein the charge quantity regulation circuit converts the temporary storage power to generate the output power in collaboration with the current limit circuit during a discharging mode. When the input current reaches a current threshold, the charge quantity regulation circuit enters the discharging mode. During the discharging mode, the charge quantity regulation circuit regulates an output voltage of the output power to a target level, wherein the target level is lower than an input voltage of the input power.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 3/157 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A multiphase motor driving circuit includes: a power stage circuit; and a control circuit. In a motor braking mode, when a holding voltage is less than the first voltage threshold, a first sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with a pulse width modulation (PWM) signal to switch periodically, thereby converting a back electromotive force (EMF) of a multiphase motor into the holding voltage to supply power to the control circuit. In the motor braking mode, when the holding voltage is greater than the second voltage threshold, a second sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with the PWM signal to keep them continuously conductive, thereby consuming the back EMF of the multiphase motor to reduce a speed of the multiphase motor.

IPC Classes  ?

• H02P 3/10 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor by reversal of supply connections
• H02P 3/02 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters Details
• H02P 7/291 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation with on-off control between two set points, e.g. controlling by hysteresis

Abstract

A switching DC-to-DC converter, in which the control circuit of the switch is powered by an adaptively regulated voltage. A voltage regulator that provides the adaptively regulated voltage has a first receiving terminal coupled to an input terminal of the switching DC-to-DC converter, a second receiving terminal coupled to an output terminal of the switching DC-to-DC converter, and a regulated output terminal coupled to the control circuit to provide the adaptively regulated voltage to power the control circuit and thereby to generate a load current. According to the load current, the voltage regulator controls whether to use the output voltage to assist in the generation of the adaptively regulated voltage.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A switching power converter includes: a power stage circuit, including at least one transistor which is configured to operably switch an inductor to convert an input power to an output power; and an active EMI filter circuit, including at least one amplifier, wherein the at least one amplifier is configured to operably sense a noise input signal which is related to a switching noise caused by the switching of the power stage circuit, and amplify the noise input signal to generate a noise cancelling signal, wherein the noise cancelling signal is injected into an input node of the switching power converter, so as to suppress the switching noise and thus reducing EMI, wherein the input power is provided through the input node to the power stage circuit.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/34 - Snubber circuits
• H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters

Abstract

A conversion control circuit controls plural stackable sub-converters which are coupled in parallel to generate an output power to a load. The conversion control circuit includes a current sharing terminal and a current sharing circuit. A current sharing signal is connected, in parallel, to the current sharing terminals. The current sharing circuit includes: configuration (1): the current sharing signal is generated only according to an inductor current corresponding to one of plural inductors of the plural stackable sub-converters; or configuration (2): the current sharing signal is generated according to plural inductor currents corresponding to plural inductors of plural activated phases of the plural stackable sub-converters, wherein a ratio of a portion of the current sharing signal generated by a master control circuit to a portion generated by one of the slave control circuits is k which relates to a difference between a total phase number and an activated phase number.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices

Abstract

A power management integrated circuit (PMIC) soldered onto a printed circuit board, includes: a first output stage circuit and a second output stage circuit. In a separate power supply configuration, first and second current inflow pins of the first and second output stage circuits are soldered to first and second current inflow printed lines, respectively, wherein the first and second current inflow printed lines are not directly electrically connected to each other; and, first and second current outflow pins of the first and second output stage circuits are soldered to first and second current outflow printed lines respectively, wherein the first and second current outflow printed lines are not directly electrically connected to each other. In a cooperation power supply configuration, the first and second current inflow pins are both soldered to a common current inflow printed line of the PCB, to be electrically connected with each other.

IPC Classes  ?

• G05F 1/577 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices for plural loads
• G05F 1/56 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
• G05F 1/575 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices characterised by the feedback circuit
• G06F 1/26 - Power supply means, e.g. regulation thereof
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

A method for predicting failure of a cooling fan includes driving a motor of the cooling fan based on a control speed, generating a first speed according to an average speed of the motor, generating a first current according to an average current of the motor, retrieving a system coefficient from a memory, generating a current threshold according to the first speed and the system coefficient, and triggering an alarm signal if the first current exceeds the current threshold by a threshold amount.

IPC Classes  ?

• F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
• H02P 8/36 - Protection against faults, e.g. against overheating or step-outIndicating faults

Abstract

A junction field effect transistor device includes a substrate, a well region, a first top layer, a plurality of source/drain regions, a first isolation structure, a gate, and a plurality of first well slots. The substrate has a first conductivity type. The well region is embedded in the substrate. The well region has a second conductivity type. The first top layer is embedded in the well region. The first top layer has the first conductivity type. The source/drain regions are disposed on a top surface of the well region. The first isolation structure is adjacent to one of the source/drain regions. The gate is disposed on a top surface of the first top layer. The first well slots are disposed below the gate. A second-conductivity-type dopant concentration of the first well slots is lower than a second-conductivity-type dopant concentration of the well region.

IPC Classes  ?

• H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
• H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
• H01L 29/40 - Electrodes
• H01L 29/808 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a PN junction gate

Abstract

A circuit of a resonant power converter comprising: a high-side switch and a low-side switch, coupled to form a half-bridge switching circuit which is configured to switch a transformer for generating an output voltage; a high-side drive circuit, generating a high-side drive signal coupled to drive the high-side switch in response to a high-side control signal; a bias voltage, coupled to a bootstrap diode and a bootstrap capacitor providing a power source from the bootstrap capacitor for the high-side drive circuit; wherein the high-side drive circuit generates the high-side drive signal with a fast slew rate to turn on the high-side switch when the high-side switch is to be turned on with soft-switching; the high-side drive circuit generates the high-side drive signal with a slow slew rate to turn on the high-side switch when the high-side switch is to be turned on without soft-switching.

IPC Classes  ?

• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A wireless power transmitter circuit includes: an inverter circuit including plural switches coupled to a resonant transmitter circuit; and a transmitter controller circuit for generating a PWM control signal, to control the plural switches, thus generating a wireless transmission power via the resonant transmitter circuit in a power supply procedure, so that a wireless power supply is accordingly provided to a wireless power receiver circuit. In a groping procedure, transmitter controller circuit controls the plural switches to generate a wireless test power via the resonant transmitter circuit based on an operation frequency. The groping procedure includes: measuring a peak of a transmission signal corresponding to the wireless test power; determining, according to the peak of the transmission signal, whether a foreign object exists and/or whether the wireless power receiver circuit is present. When it is determined that the wireless power receiver circuit is present, the power supply procedure is performed.

IPC Classes  ?

• H02J 50/60 - Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
• H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type

Abstract

An electronic device includes two speakers, a single functional chip, a parameter extraction circuit, an audio processing module, a gain adjusting circuit and a current detecting unit. The current detecting unit is disposed in the functional chip for detecting the driving current of the two speakers. The functional chip provides the driving voltage of the two speakers based on an output signal and converts the analogue current/voltages of the two speakers into digital current/voltages. The parameter extraction circuit acquires the parameter of each speaker based on the digital current/voltages. The audio processing module acquires the gains of various physical quantities based on the parameter of each speaker and determines the final gain of each physical quantity. The gain adjusting circuit provides the output signal by adjusting the gain of an input signal based on the final gain of each physical quantity.

IPC Classes  ?

• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 5/04 - Circuit arrangements

Abstract

A power factor correction control circuit for correcting a power factor of a rectified power to generate an output power supplied to a load, includes: a reference voltage generator circuit generating a reference voltage according to a rectified voltage of the rectified power; and a feedback modulation circuit generating a modulation control signal based upon the reference voltage and a feedback signal related to an output voltage of the output power, to control at least one switch of a power stage circuit to switch an inductor in the power stage circuit and to thereby regulate the output voltage. The reference voltage generator circuit selects one of at least two candidate voltages as the reference voltage according to a comparison result between the rectified voltage and at least one threshold, such that the output voltage is at least partially positively correlated with the rectified voltage.

IPC Classes  ?

• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

A multilevel buck converter includes a plurality of switches, an inductor, a flying capacitor, and a control circuit. The plurality of switches are coupled between an input terminal and a ground. The input terminal has an input voltage. The inductor is coupled between the plurality of switches and an output terminal for generating an inductor-current signal. The flying capacitor is coupled to the plurality of switches for generating a flying capacitor voltage. The control circuit is coupled to the output terminal and the plurality of switches for generating a plurality of switching signals according a feedback voltage and the inductor-current signal. The control circuit operates in a valley current mode with dual slope compensation.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A multi-level switching converter circuit for converting a first voltage to a second voltage or convert the second voltage to the first voltage, includes: a power stage circuit and a control circuit. Through a valley current mode control, the conversion control circuit generates a first ramp signal to determine a first duty ratio of the first control signal, and generates a second ramp signal to determine a second duty ratio of the second control signal, thereby a switching node connected to one end of an inductor is switched between two of k levels of voltages, such that the first voltage or the second voltage is regulated to a predetermined target level, and a flying capacitor voltage across the flying capacitor is regulated and balanced at one (k−1)th of the first voltage.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

A switching converter includes: a power stage circuit configured to switch at least one switch of the power stage circuit according to a control signal, to convert an input voltage to an output voltage; and a control circuit configured to execute modulation on a pulse width according to a feedback voltage related to the output voltage, to generate the control signal in a heavy load status. In a light load status, and when the switching converter operates at a discontinuous conduction mode (DCM), after an inductor current flowing through the power stage circuit has already become a zero current, the control circuit ceases executing modulation on the pulse width according to the feedback voltage and ceases keeping a compensation voltage correlated with the output voltage at a present level.

IPC Classes  ?

• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A wireless power transmitter circuit includes a power stage circuit including switches coupled to a resonant transmitter circuit; and a transmission control circuit controlling the power stage circuit and including: a modulation circuit generating a PWM control signal during a power supply procedure, to control the switches to convert a DC power and generate a wireless transmission power at the resonant transmitter circuit, thereby supplying the wireless power to a corresponding wireless power receiver circuit; a storage unit storing an authentication code-threshold database; and a communication circuit receiving an authentication code and a signal intensity value transmitted by the wireless power receiver circuit, to read an alignment intensity threshold corresponding to the authentication code from the storage unit, and to compare the signal intensity value with the alignment intensity threshold during a groping procedure to determine whether the wireless power transmitter circuit is aligned with the wireless power receiver circuit.

IPC Classes  ?

• H02J 50/90 - Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
• H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
• H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

A multi-phase conversion circuit includes: a first and a second sub-conversion circuits; multiple switching signals control the first front switch-mode capacitor conversion circuit's first front capacitor and the first rear switch-mode capacitor conversion circuit's first rear capacitor, and the second front switch-mode capacitor conversion circuit's second front capacitor and the second rear switch-mode capacitor conversion circuit's second rear capacitor to switch between plural electrical connection states. This setup performs switched capacitor voltage division on the first voltage, selectively switching the first or second switching node between the first or second divided voltage derived from the switched capacitor voltage division and a reference potential, whereby performing power conversion between the first power node and the second power node.

IPC Classes  ?

• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 1/38 - Means for preventing simultaneous conduction of switches

Abstract

A switching regulator includes: a phase number signal generator circuit which includes: a current sensing signal differentiator circuit for performing differentiation on a current sensing signal to generate a current differentiation signal; a current sense signal filter circuit for filtering the current sense signal to generate a filtered current signal according to the current differentiation signal; and a phase number decision circuit for deciding a phase number signal according to the filtered current signal; and an AQR signal generator circuit which includes: a voltage sensing signal differentiator circuit for performing differentiation on a voltage sensing signal to generate a voltage differentiation signal; and plural comparator circuits for comparing the voltage differentiation signal with plural AQR threshold signals to generate plural AQR comparison signals, so as to generate an AQR signal to control an operation signal generator circuit to perform an adaptive quick response procedure.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A power conversion system includes: first and second switches, a switching power converter, a battery switch and a conversion control circuit. In an external power mode, the first and second switches are controlled to generate an intermediate power from a first power and generate a second power from the intermediate power for powering an external load. In a battery power mode, the conversion control circuit controls the battery switch, the switching power converter and the second switch to generate a system power from a battery power, convert the system power to generate the intermediate power and generate the second power from the intermediate power. In the external power mode, the switching power converter is controlled to enter the battery power mode when the intermediate voltage is reduced to a transient state threshold, wherein a minimum voltage level of the intermediate power is close to a minimum voltage regulation level.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02M 1/00 - Details of apparatus for conversion
• H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
• H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Abstract

A bus configuration system includes a plurality of driver integrated circuits (ICs) coupled sequentially on a daisy chain, and a bus controller coupled to the plurality of driver ICs. Each driver IC includes a plurality of ports. The bus controller is used to generate a port definition code for configuring each port of the each driver IC. The bus controller includes a clock output port used to output a clock signal and a data output port used to output a data signal. When a port of the plurality of ports detects the clock signal, the port is configured as a clock input port.

IPC Classes  ?

• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation
• G06F 1/10 - Distribution of clock signals
• G06F 13/40 - Bus structure

Abstract

A charging/discharging power conversion system includes: a current control circuit, wherein a serial connection of a second battery and the current control circuit is connected in parallel to a first battery between a charging node and a reference voltage level; and an auxiliary current control circuit, including: a current measurement circuit measuring a first battery current and generate a battery current signal; and a current adjustment circuit adjusting a charging current according to the battery current signal via an adjustment procedure, to render the first battery current not to be greater than a first battery current threshold; wherein the adjustment procedure includes: setting the first battery current threshold; setting an initial value of the charging current, such that the initial value of the charging current is equal to a sum of the first battery current threshold plus a second battery current threshold.

IPC Classes  ?

• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A switching converter includes: a power stage circuit which includes at least one switch to switch an inductor to convert an input power to an output power; a first loop control circuit configured to switch the at least one switch by a peak current mode according to a first feedback signal related to the output power and an inductor current of the inductor in a first control mode; and a second loop control circuit configured to control the at least one switch to switch with a switching period according to a second feedback signal in a second control mode. If the power stage circuit operates in DCM during consecutively more than a predetermined number of the switching periods, the switching converter enters the first control mode. A portion of sub-circuits of the second loop control circuit are turned off to reduce power consumption in the first control mode.

IPC Classes  ?

• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A packaging method, includes: providing a continuous multi-package structure, which includes a lead frame and a molding layer formed on the lead frame, wherein the lead frame includes a plurality of recesses formed on a bottom surface on a side of the lead frame opposite to the molding layer; forming a coating layer on the bottom surface, to cover the bottom surface and the recesses on the bottom surface; and mechanically cutting the continuous multi-package structure through the recesses, to separately form a plurality of packaging units, wherein in each of the packaging units, an exposed portion of the lead frame exposed in the recesses includes a step shape.

IPC Classes  ?

• H01L 23/495 - Lead-frames
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement

Abstract

A multi-phase switching converter includes: first and second sub-switching converters; switching signals operating first and second capacitors of the first and second sub-switching converters to respectively perform a switched capacitor switching on a first voltage between plural electrical connection states, to respectively switch a first and second switching nodes between a first and second divided voltages of the first voltage obtained from the switched capacitor switching and a first and second reference voltage potentials thereby performing the power conversion between a first and second power nodes. Each of a first and second switch circuits of the first and second sub-switching converters has corresponding plural first and second switches and corresponding first and second subsidiary switch. Each of the first and second subsidiary switch is coupled between the first and second capacitors and the first and second switching nodes, to respectively decide whether the first and second capacitor is electrically connected to a first and second inductor according to the switching signal corresponding to the first and second subsidiary switch, respectively.

IPC Classes  ?

• H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
• H02M 1/00 - Details of apparatus for conversion

Abstract

A high voltage device includes: a semiconductor layer, a well, a bulk region, a gate, a source, and a drain. The bulk region is formed in the semiconductor layer and contacts the well region along a channel direction. A portion of the bulk region is vertically below and in contact with the gate, to provide an inversion region of the high voltage device when the high voltage device is in conductive operation. A portion of the well lies between the bulk region and the drain, to separate the bulk region from the drain. A first concentration peak region of an impurities doping profile of the bulk region is vertically below and in contact with the source. A concentration of a second conductivity type impurities of the first concentration peak region is higher than that of other regions in the bulk region.

IPC Classes  ?

• H01L 21/762 - Dielectric regions
• H10D 30/65 - Lateral DMOS [LDMOS] FETs
• H10D 62/10 - Shapes, relative sizes or dispositions of the regions of the semiconductor bodiesShapes of the semiconductor bodies
• H10D 64/27 - Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates

Abstract

A voltage regulator for converting an input voltage to an output voltage includes: a first and a second high-side switch, a first and a second low-side switch and a control terminal which is for generating a reference voltage or determining a forced pass-through mode. The output voltage is determined according to the reference voltage during a buck mode and a boost mode. When the input voltage is higher than a first threshold, the voltage regulator is operated in the buck mode. When the input voltage is lower than a second threshold, the voltage regulator is operated in the boost mode. When the input voltage is lower than the first threshold and is higher than the second threshold, the voltage regulator is operated in a pass-through mode. When a voltage of the control terminal is lower than a third threshold, the voltage regulator is operated in the forced pass-through mode.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Abstract

A switching converter for converting an input voltage to an output voltage includes: a power stage circuit which includes a high-side switch, a low-side switch and an auxiliary transistor; and a conversion control circuit for controlling the high-side switch, the low-side switch and the auxiliary transistor. In a switching conversion mode, the conversion control circuit controls the auxiliary transistor to be ON, and controls the high-side switch and the low-side switch to switch an inductor to convert the input voltage to the output voltage. In a pre-charging mode, the conversion control circuit controls the low-side switch to be OFF, and controls the auxiliary transistor to pre-charge the output voltage. In a linear conversion mode, the conversion control circuit controls the low-side switch to be OFF, and controls the auxiliary transistor to linearly convert the input voltage to the output voltage according to a feedback signal related to the output voltage.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 3/00 - Conversion of DC power input into DC power output

Goods & Services

Computer memory devices; computers; Circuit boards; Digital to analogue converters; Analog-to-digital converters; voltage regulators; power stabilisers; electric power supply units; chips [integrated circuits]; semiconductors; computer interface cards; semiconductor devices; electric circuits; integrated circuits; interface cards. Computer programming; computer software design; computer software consultancy; computer system design; installation of computer software; research and development services; technological research; design of integrated circuits; research in the area of semiconductor processing technology.