Sign up


Match Document Document Title
US20090109718 INTEGRATED CIRCUIT INCLUDING A CONTROLLER FOR REGULATING A POWER SUPPLY  
An integrated circuit includes a controller configured to regulate an output of a power supply based on a first signal. The integrated circuit includes an input configured to receive the first...
US20130002639 DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME  
A DC-DC converter and an organic light emitting display including the same are disclosed. The DC-DC converter generates first and second power voltages for the organic light emitting display with...
US20140233284 OVER VOLTAGE PROTECTION FOR ELECTRIC MACHINES  
A system and method for protecting an electrical power generation system from an over-voltage. The output voltage of a multi-phase rectifier, operatively connected between the output terminals of...
US20130223117 POWER SUPPLY SYSTEM  
The invention provides a power supply system that is capable of converting a variable AC voltage to a regulated DC voltage that is configured to be supplied to an associated device. The power...
US20120163036 POWER SUPPLY UNIT SUPPLYING STANDBY POWER BY SHARING SWITCH OF MAIN CONVERTER  
There is provided a power supply unit supplying a standby power by sharing a switch of a main converter. The power supply unit includes: a main converter, and a standby converter. The main...
US20130257054 Gas Turbine - Variable Frequency Transformer Power Systems and Methods  
Systems and methods are provided that include a gas turbine, a generator coupled to the gas turbine and configured to generate a first electrical power output, and a variable frequency transformer...
US20120127769 Soft Switching Power Converters  
Soft switching power converters are described. In one example, a grid tie solar power converter includes an input for receiving a direct current (DC) power input, an h-bridge coupled to the input,...
US20140218986 Multilevel Converter And A Method For Controlling Multilevel Converter Including Balancing Cell Voltages  
A multilevel converter for controlling a multilevel converter is provided. The multilevel converter is a single phase converter with one phase leg, or a three phase converter with three phase legs,...
US20130147275 INVERTER WITH AN AC INTERFACE FOR THE CONNECTION OF AC MODULES  
An inverter for feeding a grid-compatible AC voltage into a grid is described, wherein the inverter includes an inverter bridge for converting a DC voltage to a first AC voltage and a grid...
US20130242619 RESET VOLTAGE CIRCUIT FOR A FORWARD POWER CONVERTER  
An example method includes controlling a duty ratio of a switch to regulate an output of a forward power converter and storing a first voltage. The first voltage is equal to an input voltage of the...
US20140192561 CONTROL CIRCUIT FOR SWITCHING POWER CONVERTERS WITH SYNCHRONOUS RECTIFIERS  
A control circuit for switching power converters with synchronous rectifiers is disclosed for providing start-up and shut-down protection. The control circuit for switching power converters with...
US20110235378 POWER SUPPLY SYSTEM FOR ELECTRONIC DEVICE  
A power supply system includes an AC power source, a converter, a relay switch, and a waveform monitoring circuit. The AC power source provides an AC voltage. The converter is capable of converting...
US20140104902 METHOD FOR THE OPERATION OF AN INVERTER, AND INVERTER  
The invention relates to a method for operating an inverter (1), in particular a pulse-controlled inverter, comprising multiple phase systems (2, 3, 4), each of which has an outer conductor (7, 8,...
US20120161528 Solar Photovoltaic Systems  
Improved techniques for photovoltaic power generation are described. Inverter failure is can be a significant problem in solar photovoltaic systems as it can lead to loss of opportunity to harvest...
US20130070505 Inverter Control When Feeding High Impedance Loads  
An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit...
US20140085945 POWER SUPPLY SYSTEM, ASSOCIATED CURRENT RIPPLE SUPPRESSION CIRCUIT AND METHOD  
A power supply system has a current source configured to provide an output current, a load supplied by the current source, and a current ripple suppression circuit. The current ripple suppression...
US20130094261 Photovoltaic Power Converters  
Photovoltaic power converter systems and methods are described. In one example, a method for use in operating a solar power converter includes sampling a DC link voltage of a DC link during a first...
US20120044728 ELECTRIC POWER CONVERTER  
In aspects of the invention, first and second series circuits of switching devices and a series circuit of capacitors are connected in parallel. Between the connection point in the first series...
US20130063991 VOLTAGE CONVERTER CONFIGURATIONS FOR SOLAR ENERGY SYSTEM APPLICATIONS  
A system includes a low switching frequency power converter configured to be coupled to a solar cell, wherein the low switching frequency power converter is configured to generate alternating...
US20120243278 Power Module and Circuit Board Assembly Thereof  
A power module includes a first bobbin, a primary winding coil, a circuit board assembly and a first magnetic core assembly. The primary winding coil is wound around the first bobbin. The circuit...
US20100085786 CONVERTIBLE CHARGE-PUMP CIRCUIT  
A convertible charge-pump circuit includes: a charging circuit having a plurality of charging capacitors and a pumping circuit having an output port coupled to a pumping capacitor. The charging...
US20130235621 REGULATION FOR POWER SUPPLY MODE TRANSITION TO LOW-LOAD OPERATION  
A switching power converter includes a controller configured to transition from a first operating mode to a second operating mode by determining the operating conditions at the transition point...
US20080175024 Power converter with isolated and regulation stages  
In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no...
US20110216567 Single switch inverter  
A novel concept of converting a DC input to an AC output with a single active switch is disclosed. A series of topologies are developed to support the needs of different applications. Particular...
US20130279216 COMPENSATING RIPPLE ON PULSE WITH MODULATOR OUTPUTS  
A ripple compensation apparatus comprises a ripple detection unit to detect a ripple on a dual DC bus, a waveform generation unit to generate a modulated waveform based on a base waveform and the...
US20120262955 CONVERTER WITH INPUT VOLTAGE BALANCE CIRCUIT  
In one aspect of the present invention, a converter circuit with input voltage balance includes a plurality of modules having inputs electrically series-connected to each other and outputs...
US20120256685 Power Supply with Tickle Pulse Injection  
A power supply injects a series of “tickle” pulses into a pulse width modulated (PWM) controller to induce the controller to generate PWM pulses at a minimum switching frequency, preferably one tha...
US20120175955 SMART MICROGRID RECONFIGURABLE AC INTERFACE  
Presented is a system and method for providing reconfigurable AC interfaces for AC power systems. The method comprises embedding a reconfigurable AC interface for transferring power between power...
US20120039095 BOOST CONVERTER  
There is provided a boost converter capable of reducing internal pressure in elements without the employment of a separate snubber by clamping a voltage, transmitted to the elements, to a charging...
US20050237010 Architecture of power supply system for LCD apparatus  
The proposed architecture includes a Dual Boost PFC circuit for receiving the AC input voltage and generating the DC bus voltage, at least one inverter coupled to the Dual Boost PFC circuit for...
US20120020463 COMPACT, LOW NOISE POWER SUPPLY FOR ADVANCED ELECTRONICS APPLICATIONS, AND X-RAY ANALYZER APPLICATIONS THEREOF  
A shielded, low-noise, high-voltage power supply having a plurality of voltage multipliers, each having a toroidal transformer, and collectively producing a high DC output voltage from an AC...
US20100054001 AC/DC Converter with Power Factor Correction  
A power converter is configured for usage in a power factor correction system. The power converter comprises a transformer with a primary winding and a secondary winding which isolates a primary...
US20090080228 INDUSTRIAL TRUCK WITH A CHARGER  
Industrial truck with a charger, an asynchronous machine and a three-phase AC control unit which converts a DC voltage of a battery for the asynchronous machine, the charger having a switching...
US20130170257 COMPOSITE AC-TO-DC POWER CONVERTER USING WYE ARCHITECTURE  
A composite power conversion method using a WYE asymmetrical autotransformer that converts electrical power from AC to DC uses two or more conversion methods in parallel and provides a passive...
US20130272034 METHOD OF FORMING A LOW POWER DISSIPATION REGULATOR AND STRUCTURE THEREFOR  
In one embodiment, a method of forming a conditioning circuit includes configuring an output biasing network to provide a biasing voltage to an MOS transistor to enable the MOS transistor to...
US20140104891 DC-DC CONVERTER  
Disclosed is a DC-DC converter. The DC-DC converter includes a power input unit to which power is applied, a first module comprising a first transformer and a second transformer to output a first...
US20140146579 TRANSISTOR GATE DRIVER WITH CHARGE PUMP CIRCUIT FOR OFFLINE POWER CONVERTERS  
A controller of the power converter according to the present invention comprises a gate driver. The gate driver generates a gate-drive signal. The gate-drive signal is coupled to drive a power...
US20140085940 Power System Switch Protection Using Output Driver Regulation  
A controller of a switching power converter includes a voltage protection circuit that generates a modified supply voltage that does not exceed a predetermined threshold voltage to power one or...
US20130194831 RESONANT CONVERTER WITH AUXILIARY RESONANT COMPONENTS AND HOLDUP TIME CONTROL CIRCUITRY  
A resonant power converter is provided with auxiliary circuit branches and control circuitry for switchably coupling the auxiliary branches to resonant circuit components during holdup times....
US20110103102 VOLTAGE CONVERTER WITH HIGH EFFICIENCY  
A voltage converter transmits energy in multiple stages using a charge pump so as to decrease the voltage rating of the secondary side of the transformer and reduce the size of the transformer....
US20110122655 POWER SUPPLY WITH AC/DC CONVERTER AND DC/AC INVERTER IN LOOP  
A power supply includes a DC/AC inverter and an AC/DC converter connected in a loop such that a DC output of the AC/DC converter is connected to a DC input of the DC/AC inverter and an AC output of...
US20080198635 Pulse width modulated ground/return for powered device  
A new pulse width modulation return scheme in which the source of PWM FET is directly connected to the 48 Volt return and therefore Ids of PWM FET does not pass through the hot-swap FET which...
US20130076151 PHOTOVOLTAIC GENERATION SYSTEM USING PARALLEL INVERTER CONNECTED GRID  
A photovoltaic generation system using grid-connected parallel inverters comprises a plurality of photovoltaic generation devices connected in parallel with each other, and a transformer configured...
US20130182471 OVERVOLTAGE PROTECTION CIRCUIT FOR AT LEAST ONE BRANCH OF A HALF-BRIDGE, INVERTER, DC/DC VOLTAGE CONVERTER AND CIRCUIT ARRANGEMENT FOR OPERATING AN ELECTRICAL MACHINE  
An overvoltage protection circuit is provided for at least one branch of a half-bridge which includes a controllable semiconductor switch element and a free-wheeling diode connected in series and...
US20140009969 CURRENT SOURCE INVERTER AND METHOD FOR CONTROLLING CURRENT SOURCE INVERTER  
In controlling switching elements of a current source inverter, a switching loss in the switching element is prevented according to a normal switching operation for a commutation operation, without...
US20110141773 HVDC CONNECTION OF WIND TURBINE  
A method and apparatus for connection of a wind driven turbine generator to an HVDC transmission line is provided that does not require transformation of the wind generated AC voltage to a nominal...
US20140140102 DRIVE TRANSFORMER ISOLATION ADAPTIVE DRIVE CIRCUIT  
A drive transformer isolated-adaptive drive-circuit includes a power supply, a first MOSFET and a second MOSFET, the drain electrode of the first MOSFET coupled with the positive electrode of the...
US20140218977 SWITCHING POWER SUPPLY CIRCUIT  
A switching power supply circuit includes a switching element that switches power fed to a primary winding of a transformer and thus induces a voltage in the secondary winding, and an oscillation...
US20120327691 SWITCHED MODE POWER SUPPLY  
A power supply has over power protection based on the same signal as used by the feedback path for controlling the switching of the power supply. This means that no additional signal needs to be...
US20140112024 HIGH VOLTAGE SWITCHING LINEAR AMPLIFIER AND METHOD THEREFOR  
A switching linear amplifier has a DC-DC converter to increase a low input DC voltage to a first high voltage DC. A high voltage high frequency inverter is coupled to the DC-DC converter to...