Matches 1 - 50 out of 174 1 2 3 4 >


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US20150188414 SINGLE-PHASE POWER FACTOR CORRECTOR WITH STEP-UP AND STEP-DOWN FUNCTIONS  
A single-phase power factor corrector with step-up and step-down functions provides a step-up circuit and a step-down circuit which are connected in parallel to each other and thereby stabilizes...
US20110221416 Battery charger and method for collecting maximum power from energy harvester circuit  
An energy harvesting system for transferring energy from an energy harvester (2) having an output impedance (Zi) to a DC-DC converter (10) includes a maximum power point tracking (MPPT) circuit...
US20120133349 MEASUREMENT CIRCUIT FOR BUCK CIRCUIT  
A measurement circuit for overload protection is applied in a buck circuit. The buck circuit includes a pulse width modulation (PWM) controller and a voltage output terminal. The measurement...
US20110050193 POWER SUPPLY CIRCUIT FOR CPU  
A power supply circuit includes a PWM controller, which is capable of providing pulse signals to the CPU, a temperature feedback circuit coupled to the PWM controller, and a temperature sensor....
US20110199064 DC-TO-DC CONVERTER  
A DC-to-DC converter adapted for generating a power voltage required by a load and including a buck circuit and a boost circuit is provided. The buck circuit is used for receiving a DC input...
US20110084679 METHOD AND APPARATUS PROVIDING FINAL TEST AND TRIMMING FOR A POWER SUPPLY CONTROLLER  
A power supply controller having final test and trim circuitry. In one embodiment, a power supply controller for switched mode power supply includes a selector circuit, a trim circuit, a shutdown...
US20150002124 DC-DC CONVERTER  
A DC-DC converter includes a voltage converter circuit having an FET 1, a short-circuit protection FET 3 that blocks a large current from flowing in the voltage converter circuit when a...
US20130325380 AC Active Load  
An AC active load device for use with a generator and a controller to supply a variable impedance when supplied with an AC waveform. The AC active load device uses a transformer and one or more...
US20110025289 TWO-STAGE SWITCHING POWER SUPPLY  
A two-stage switching power supply includes a first-stage power circuit, a bus capacitor, a second-stage power circuit and a power control unit. The first-stage power circuit is connected to a...
US20120161739 VARIABLE TIME CLAMP FOR A POWER SUPPLY CONTROLLER  
An example integrated circuit for use in a power supply includes a feedback terminal and a controller having a variable time clamp (VTC). The feedback terminal is to be coupled to receive a...
US20110013431 SWITCHING POWER CONVERSION CIRCUIT AND POWER SYPPLY USING SAME  
A switching power conversion circuit receives an input voltage and generates an output voltage to a system circuit. The switching power conversion circuit includes a power circuit, a feedback...
US20140132235 CIRCUIT BOARD AND POWER SOURCE MANAGEMENT SYSTEM OF CIRCUIT BOARD  
A power source management system of a circuit board that comprises: a processor, comprising a core voltage input terminal; and a core voltage feedback terminal; and a voltage regulating member,...
US20100295525 POWER SUPPLY ARRANGEMENT WITH SECONDARY VOLTAGE MONITORING  
According to the invention, a blocking oscillator type converter circuit functions with a transformator that only comprises a primary winding and a secondary winding. Said transformator does not...
US20130113451 INTELLIGENT SWITCHING CONTROLLER AND POWER CONVERSION CIRCUITS AND METHODS  
A power conversion circuit comprising a voltage estimation circuit, a current estimation circuit, and a pulse width modulation circuit. The voltage estimation circuit is configured to receive a...
US20130106383 CONTROL CIRCUIT AND CONTROL METHOD FOR POWER CONVERSION DEVICE  
By adding a suppression amount for suppressing an overshoot or undershoot that attenuates with time during an overshoot or undershoot period, the overshoot or undershoot can be suppressed within a...
US20130214754 POWER SUPPLY DEVICE  
A power supply device includes a power supply unit, a buck converter, a logic circuit, and a snubber circuit. The buck converter and the logic circuit are connected to the power supply unit. The...
US20130241512 STEP-UP SWITCHING POWER SUPPLY  
A hysteresis control step-up switching power supply includes a switching element. Current flowing through the switching element does not continue to increase indefinitely. The switching element is...
US20110199065 DC-TO-DC CONVERTER  
A DC-to-DC converter includes a triangular wave generator, a variable gain amplifier configured to amplify an error between a reference voltage and a feedback voltage which is a feedback of an...
US20140062444 BOUNDARY CONDUCTION MODE SWITCHING REGULATOR AND DRIVER CIRCUIT AND CONTROL METHOD THEREOF  
A boundary conduction mode (BCM) switching regulator controls a power stage to convert an input voltage to an output voltage or output current. The BCM switching regulator detects whether it is...
US20110115459 PHASE ADJUSTING SYSTEM AND METHOD  
A phase adjusting system includes a controlled element, a multi-phase pulse-width modulation (PWM) controller comprising default and non-default phases, and a microprogrammed control unit (MCU)....
US20130249520 BOOST REGULATOR WITH TIMING CONTROLLED INDUCTOR BYPASS  
Apparatus and methods of implementing a voltage converter bypass switch, among other things, are discussed herein. In certain examples, a boost converter can include a bypass switch configured to...
US20130002224 HIGH EFFICIENCY BOOST CONVERTER  
A boost converter circuit receives an input power supply voltage and produces an output boosted supply voltage. The circuit includes a voltage regulator, boosting circuitry, and a timing...
US20150002125 DC-DC CONVERTER  
A DC-DC converter that is capable of cutting off a large current flowing in a voltage converter circuit when a short-circuit failure occurs in a switching element of the voltage converter circuit...
US20110089925 SWITCHING REGULATOR  
A switching regulator is configured to generate an output voltage by stepping down an input voltage by switching control of a switching element. The switching regulator includes a first comparator...
US20140015505 Efficient Energy Use in Low Power Products  
Techniques are provided that can extend the efficiency of a switching regulator further into the low current region by making use of the available knowledge on predictable load variations and...
US20110080151 SYSTEM AND METHOD FOR MULTI-PHASE VOLTAGE REGULATION  
In accordance with one embodiment of the present disclosure, a multi-phase voltage regulator may comprise a plurality of phases, each phase configured to supply electrical current to one or more...
US20150069991 POWER SUPPLY CIRCUIT  
The power supply circuit includes a power supply-side capacitor The power supply circuit includes a ground-side capacitor The power supply circuit includes a power supply-side amplifier that is...
US20120105041 DISCONTINUOUS CONDUCTION CURRENT MODE MAXIMUM POWER LIMITATION PHOTOVOLTAIC CONVERTER  
A discontinuous conduction current mode maximum power limitation photovoltaic converter connects to a ground and a solar cell having a temperature compensation signal and an output power and being...
US20120025799 SENSING AND FEEDBACK IN A CURRENT MODE CONTROL VOLTAGE REGULATOR  
The disclosed embodiments of voltage regulators incorporate a current mode control architecture. In one embodiment, a comparator mechanism triggers a transition in a power switch when the error in...
US20120268095 DC-DC VOLTAGE CONVERTER SYSTEM WITH A HIGH-EFFICIENCY PULSE-SKIP OPERATIONAL MODE  
DC-DC voltage converter systems are provided in which a switching voltage converter is arranged with an inductor to switch first and second currents with duty cycles D and D′ determined by an...
US20140300336 LOAD REGULATION COMPENSATION MODULE AND SWITCHING CONVERTER COMPRISING THE SAME  
A switching converter and a load regulation compensation module for improving load regulation accuracy of the switching converter. The switching converter regulates its output voltage through...
US20140285172 POWER CIRCUIT  
According to one embodiment, the power circuit includes a first feedback loop which feedbacks information on an output voltage and a second feedback loop which feedbacks information on a load...
US20130128633 CHOPPER APPARATUS  
Positive-side DC terminals P1′ and P′ connected to a positive-side DC bus of a chopper 4 are provided in the chopper 4 and the positive-side DC terminals P1′ and P′ are connected to positive-side...
US20100295526 POWER SUPPLY ARRANGEMENT WITH OUTPUT FLOW MONITORING  
According to the invention, a blocking oscillator type converter circuit functions with a transformator that only comprises a primary winding and a secondary winding. Said transformator does not...
US20100301826 SYSTEM AND METHOD FOR ORING PHASES TO OVERCOME DUTY CYCLE LIMITATIONS IN A MULTI-PHASE BOOST CONVERTER  
A multiphase boost converter includes a multiphase PWM controller for generating a plurality of PWM signals. A plurality of boost converters are each associated with a separate phase connected...
US20110187341 USING OFFSET CANCELLATION CIRCUIT TO MITIGATE BEAT-FREQUENCY OSCILLATION OF PHASE CURRENTS IN A MULTIPHASE INTERLEAVED VOLTAGE REGULATOR  
For a multiphase interleaved voltage regulator, an offset cancellation circuit is applied for each phase separately. The current loop gain of each phase is thus increased to mitigate the...
US20110115460 ELECTRICAL SWITCHING MODULE  
A module including a case; an electrical switching device configured to control power to a load; and a controller coupled to the electrical switching device. The electrical switching device and...
US20110109294 METHOD FOR DETERMINING PRE-BIAS IN A SWITCH-MODE CONTROLLER  
A switch-mode controller, buck converter or DC to DC step-down regulated voltage converter that senses an initial pre-bias voltage at initialization and adjust a duty cycle of the switching...
US20110040987 TIME AVERAGED DYNAMIC PHASE SHEDDING  
A time averaged dynamic phase shedding system includes a system to generate a first phase electrical pulse using a phase 1 pulse generator and generate a second phase electrical pulse using a...
US20090015230 METHOD OF CONTROLLING A STEP-UP DC-DC CONVERTER AND RELATED CONVERTER  
A method of controlling a DC-DC step-up converter including at least one power switch and an energy storage inductor may include comparing a converter output voltage to a first threshold and...
US20140247031 NEGATIVE CURRENT PROTECTION SYSTEM FOR LOW SIDE SWITCHING CONVERTER FET  
A negative current protection system for a low side switching converter FET, for use with a switching converter arranged to operate high and low side FETs connected to an output inductor to...
US20100127684 CURRENT SENSE CASCODE AMPLIFIER  
A current sense amplifier sensing current through a main switch of a converter. The amplifier includes first and second switch devices, an amplifier control circuit, a bias circuit, a current...
US20120176113 Regulating Current Output From A Buck Converter Without External Current Sensing  
A step-down (buck) switching regulator regulates output current without sensing a current external to a converter integrated circuit. The regulator generates a set current that is indicative of a...
US20140354168 POWER SUPPLY AND METHOD FOR CONTROLLING THE SAME  
A power supply includes an inputter including an input capacitor and configured to receive an input DC voltage, a converter including an output capacitor and configured to convert the input DC...
US20110133717 CONTROLLER AND DRIVER COMMUNICATION FOR SWITCHING REGULATORS  
Pulse width modulation (PWM) controllers and output stage driver circuits and related methods of communicating switching regulator mode information. The controller includes circuitry that...
US20110133716 CONTROLLER AND DRIVER COMMUNICATION FOR SWITCHING REGULATORS  
Pulse width modulation (PWM) controllers and output stage driver circuits and related methods of communicating switching regulator mode information. The controller includes circuitry that...
US20120086423 SWITCHED MODE VOLTAGE REGULATOR AND METHOD OF OPERATION  
A voltage regulator includes a transistor, a comparator, and a compensation circuit. The comparator has a first input terminal coupled to receive a clock signal, a second input terminal, and an...
US20140253083 CONTROLLING CURRENT IN A SWITCHING REGULATOR  
In one aspect, this disclosure relates to a method of controlling current output from a switching regulator to a load via an inductor. Inductor current information can be sampled at a peak level,...
US20080100371 DUAL RAIL GENERATOR  
Some embodiments disclosed herein provide dual rail generators to provide a high and a low supply rail.
US20110193543 METHOD AND APPARATUS FOR SYNCHRONOUS BUCK WITH ACTIVE NEGATIVE CURRENT MODULATION  
A circuit is disclosed that includes a buck voltage regulator electrically coupled to an active current modulator. The active current modulator is operable to detect a negative current in the...

Matches 1 - 50 out of 174 1 2 3 4 >