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Power Integrations, Inc. Patents
Assignee:
Power Integrations, Inc.
Address:
San Jose, CA
No. of patents:
452
Patents:


1 2 3 4 5 6 7 8 9 10










Patent Number Title Of Patent Date Issued
8587969 Method and apparatus for on/off control of a power converter November 19, 2013
A power converter is disclosed. An example power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element and the power converter input. A feedback sampling circuit is
8587284 Method and apparatus to limit output power in a switching power supply November 19, 2013
A power supply includes an energy transfer element, a switch, and a controller. The controller includes a modulator, a drive signal generator, a comparator, and a variable current limit generator. The modulator generates an enable signal having logic states responsive to a feedback s
8587280 Power factor correction converter control offset November 19, 2013
A power supply arrangement includes a PFC converter, an LLC converter, a control unit and an offset unit. The control unit generates a control signal to control a duty cycle of a PWM (Pulse Width Modulation) signal to control the PFC converter. The control unit includes a PWM converter
8587024 Vertical junction field effect transistors and bipolar junction transistors November 19, 2013
Methods of making semiconductor devices such as vertical junction field effect transistors (VJFETs) or bipolar junction transistors (BJTs) are described. The methods do not require ion implantation. The VJFET device has an epitaxially regrown n-type channel layer and an epitaxially r
8582327 Method and apparatus for a control circuit responsive to an impedance coupled to a control circu November 12, 2013
A method, in a power supply controller, of responding to an increase in current through a terminal of the power supply controller, is disclosed. The method includes regulating the terminal to a first voltage level and sensing a magnitude of a first current through the terminal while the
8582325 Flyback converter with forward converter reset clamp November 12, 2013
A power supply includes a forward converter having a first transformer coupled to an input of the power supply and to a first voltage output. The power supply also includes a separate flyback converter having a second transformer that is coupled to the input and to a second voltage o
8582319 Control arrangement for a resonant mode power converter November 12, 2013
A resonant mode converter includes a PFC power converter having an input coupled to receive an input voltage. An LLC power converter is cascaded with the PFC power converter. The LLC power converter includes a transformer coupled to generate an output of the resonant mode converter.
8570768 Low-cost transformer assembly October 29, 2013
A transformer assembly is disclosed. An example circuit board assembly includes a circuit board. A drum core inductor is also included and has a drum core, a first winding, and first and second terminals extending from a first end of the drum core inductor. A wire of the first winding is
8564980 Method and apparatus to control a power converter having a low loop bandwidth October 22, 2013
An example controller includes a comparator coupled to receive a feedback signal representative of an output of the power converter. A counter is coupled to receive an output of the comparator and a feedback sampling signal. The counter is coupled to sample the output of the comparator i
8300434 Method and apparatus to control a power converter having a low loop bandwidth October 30, 2012
An example controller includes a feedback sensor circuit that receives a feedback signal representative of an output of a power converter. A feedback sampling signal generator is coupled to generate a feedback sampling signal. The feedback sensor circuit samples the feedback signal i
8300429 Cascaded PFC and resonant mode power converters October 30, 2012
A power supply includes a PFC (power factor correction) converter that has an input and an output. The PFC converter input is coupled to an input of the power supply. The power supply also includes a resonant mode converter that has an input and an output. The resonant mode converter
8299772 Method and apparatus for implementing slew rate control using bypass capacitor October 30, 2012
An example circuit includes a regulator circuit coupled to first and second nodes. A capacitance circuit and a slew rate control circuit are coupled between the first and second nodes. The regulator circuit is coupled to charge a capacitance of the capacitance circuit with a charge c
8299730 Integrated on-time extension for non-dissipative bleeding in a power supply October 30, 2012
An example controller for a switched mode power supply includes a zero-crossing detector, drive logic, and an on-time extension block. The zero-crossing detector is coupled to generate a first signal prior to a zero-crossing of an input voltage of the power supply. The drive logic is
8294377 Power converter with compensation circuit for adjusting output current provided to a constant lo October 23, 2012
A power converter for constant loads includes an energy transfer element, a switch, a controller, and a compensation circuit. The energy transfer element is coupled to receive a rectified voltage having a non-blocked portion and a blocked portion, where an amount of the blocked portion
8284571 Control arrangement for a PFC power converter October 9, 2012
In a PFC (power factor correction) control unit for controlling a PFC converter, a transconductance amplifier is coupled to receive a feedback signal representative of an output voltage of the PFC converter. The transconductance amplifier is coupled to generate an output error signal
8279643 Method and apparatus to select a parameter/mode based on a measurement during an initialization October 2, 2012
An integrated circuit includes a threshold detection circuit that is coupled to measure a signal from a first resistive external circuit coupled between a fourth external terminal of the integrated circuit and a first external terminal of the integrated circuit during a duration of a
8279636 Flyback converter with forward converter reset clamp October 2, 2012
A power supply includes a first power converter, a second power converter, and a clamp reset circuit. The clamp reset circuit is electrically coupled to other components within the first power converter and the second power converter. A clamp standby connection can be provided to ele
8279627 Method and apparatus for a control circuit with multiple operating modes October 2, 2012
An example controller for use in a power converter includes an oscillator and a logic circuit. The oscillator is to be coupled to a switch of the power converter and determines a switching cycle period of the switch. The logic circuit is also to be coupled to the switch to control a duty
8278994 Temperature independent reference circuit October 2, 2012
A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and secon
8278972 Method and apparatus for simplifying the control of a switch October 2, 2012
A circuit for use in a half bridge converter includes a high side switch coupled between a positive input terminal and a first terminal of a primary transformer winding. A low side switch is coupled between a negative input terminal and the first terminal. A first control circuit is
8274799 Control arrangement for a resonant mode power converter September 25, 2012
A resonant mode power converter is controlled with a control unit including a current limiting circuit coupled to receive a first current representative of a power converter output and a second current generated in response to a reference voltage. The current limiting circuit is coup
8264858 Electronic circuit control element with tap element September 11, 2012
A technique for controlling a power supply with power supply control element with a tap element. An example power supply control element includes a power transistor that has first and second main terminals, a control terminal and a tap terminal. A control circuit is coupled to the co
8248053 Off-line converter with digital control August 21, 2012
A circuit for regulating the level at a power converter output is disclosed. An example circuit includes an input for receiving a feedback signal. The feedback signal has a first feedback state that represents a level that is above a threshold level and a second feedback state that r
8248051 Power factor correction converter control offset August 21, 2012
An apparatus includes a control unit to generate a control signal to control a duty cycle of a PWM switching signal that controls a switch in a PFC converter. The control unit includes a PWM converter to produce a PWM signal responsive to an output voltage of the PFC converter. A swi
8247287 Method of fabricating a deep trench insulated gate bipolar transistor August 21, 2012
In one embodiment, a method comprises forming an epitaxial layer over a substrate of an opposite conductivity type, the epitaxial layer being separated by a buffer layer having a doping concentration that is substantially constant in a vertical direction down to the buffer layer. A p
8243480 Method and apparatus for a control circuit responsive to an impedance coupled to a control circu August 14, 2012
An example power supply controller includes a regulation circuit, a current sense circuit, and a response circuit. The regulation circuit is coupled to regulate a sense terminal to a voltage level. The current sense circuit is coupled to the sense terminal to sense a current through
8243478 Method and apparatus for limiting maximum output power of a power converter August 14, 2012
An example power converter includes an energy transfer element, a switch, a controller, and a current offset circuit. The controller switches the switch between an ON state and an OFF state to regulate the output of the power converter and is adapted to terminate the ON state of the swit
8243477 Flyback power supply with forced primary regulation August 14, 2012
A controller that forces primary regulation is disclosed. An example controller includes a switched element to be coupled to a second winding of an energy transfer element of a power supply. A secondary control circuit is coupled to the switched element. The secondary control circuit
8242825 Method and apparatus for pulse width modulation August 14, 2012
An integrated control circuit according to aspects of the present invention includes a capacitor to develop a first current during a first time duration in response to a charge current and to develop a second voltage during a second time duration in response to a discharge current. A
8242766 Dimming control for a switching power supply August 14, 2012
A controller for dimming control of a switching power supply includes a phase angle measurement block and a drive logic block. The phase angle measurement block is to be coupled to receive an input sense signal. The phase angle measurement block generates a phase angle signal represe
8236656 Method and apparatus for controlling a circuit with a high voltage sense device August 7, 2012
A high-voltage junction field-effect transistor (JFET) includes a semiconductor substrate, a well region, first, second, and third doped regions, and first, second, and third terminals. The first doped region is disposed in the well region and the second dope region is laterally disp
8225111 Method and apparatus to authenticate a power supply July 17, 2012
A power supply that can be authenticated is disclosed. An apparatus according to aspects of the present invention includes an external power supply of an electronic product that modulates an output of the power supply with information encoded to identify the power supply to the produ
8222882 Power supply controller with input voltage compensation for efficiency and maximum power output July 17, 2012
A controller for a power supply includes a logic block and a time-to-frequency converter. The logic block is to generate a drive signal in response to a clock signal. The drive signal is to be coupled to control switching of a power switch of the power supply to regulate an output of
8222691 Gate pullback at ends of high-voltage vertical transistor structure July 17, 2012
In one embodiment, a transistor includes a pillar of semiconductor material arranged in a racetrack-shaped layout having a substantially linear section that extends in a first lateral direction and rounded sections at each end of the substantially linear section. First and second die
8213187 Method and apparatus for high-side input winding regulation July 3, 2012
A power supply control circuit for use in a power supply is disclosed. An example power supply control circuit includes a power switch coupled between first and second terminals. The first terminal is to be coupled to a positive input supply rail of the power supply. The second terminal
8207760 Method and apparatus switching a semiconductor switch with a multi-stage drive circuit June 26, 2012
A method and an apparatus for implementing a semiconductor switch multi-stage drive circuit. The disclosed method and an apparatus reduce losses in a semiconductor switch when it is turned from an off state to an on state or from an on state to an off state. The reduction in losses i
8207723 Method and apparatus to reduce line current harmonics from a power supply June 26, 2012
A method and apparatus for controlling a power converter. In one aspect, a controller for use in a power converter includes a first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output an on time signal
8207580 Power integrated circuit device with incorporated sense FET June 26, 2012
In one embodiment, a power integrated circuit device includes a main lateral high-voltage field-effect transistor (HVFET) and an adjacently-located lateral sense FET, both of which are formed on a high-resistivity substrate. A sense resistor is formed in a well region disposed in an
8207577 High-voltage transistor structure with reduced gate capacitance June 26, 2012
In one embodiment, a high voltage field-effect transistor (HVFET) includes a field oxide layer that covers a first well region, the field oxide layer having a first thickness and extending in a second lateral direction from a drain region to near a second well region. A gate oxide co
8207455 Power semiconductor package with bottom surface protrusions June 26, 2012
A package includes a body that encapsulates a semiconductor die, the body having a first pair of opposing lateral sides, a second pair of opposing lateral sides, a top, and a bottom. The bottom has a primary surface and a plurality of protrusions that extend outward from the primary surf
8194426 DC converter with independently controlled outputs June 5, 2012
A power supply includes a transformer having a primary winding and one or more secondary windings. The power supply also includes a primary switch coupled to the primary winding, a control unit coupled to control the primary switch, and N output circuits each to provide a respective one
8194423 Method and apparatus to reduce audio frequencies in a switching power supply June 5, 2012
An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the duty cycle of a pulse width modulated switching signal to provide a fixed peak switching curre
8194422 Method and apparatus for digital control of a switching regulator June 5, 2012
In one aspect, a power supply regulator includes a feedback terminal, a node, a control circuit, a first current source, and a second current source. The node is coupled to the feedback terminal to provide a feedback state signal in response to a feedback current through the feedback
8194421 Method and apparatus for implementing an unregulated dormant mode with an event counter in a pow June 5, 2012
A method for controlling an output of a power converter includes generating a drive signal with a control circuit, entering a dormant mode of operation that includes powering down the control circuit if a flow of energy to an output of the power converter is less than a threshold value
8188724 Method and apparatus to reduce maximum power from a power supply with transition region regulati May 29, 2012
Techniques are disclosed to regulate the output power of a power supply. An example feedback circuit for use in a power supply regulator includes a voltage regulation circuit coupled to sense an output voltage of the power supply regulator. The voltage regulation circuit is coupled to
8184413 Fault condition protection May 22, 2012
A regulator for a switched mode power supply includes switching regulator logic, a counter and a switching transistor. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodically cycles between a
8174852 Asymmetric switch forward converter May 8, 2012
A switching circuit for use in a power converter in one aspect includes a first and second active switch and a first and second passive switch. The first active switch can be coupled to a first terminal of a primary winding of a transformer. The second active switch can be coupled to a
8169003 Termination and contact structures for a high voltage GaN-based heterojunction transistor May 1, 2012
A semiconductor device is provided that includes a substrate, a first active layer disposed over the substrate, and a second active layer disposed on the first active layer. The second active layer has a higher bandgap than the first active layer such that a two-dimensional electron
8164125 Integrated transistor and anti-fuse as programming element for a high-voltage integrated circuit April 24, 2012
A semiconductor device includes an N type well region in a P type substrate. A source region of a MOSFET is laterally separated from a boundary of the well region, which includes the drain of the MOSFET. An insulated gate of the MOSFET extends laterally from the source region to at l
8159843 Method and apparatus to regulate an output voltage of a power converter at light/no load conditi April 17, 2012
An example apparatus to regulate an output voltage of a power converter at light/no load conditions includes a driver circuit, a feedback circuit, and an adjustable voltage reference circuit. The driver circuit is coupled to output a drive signal to switch a power switch between an O
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