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7643319 |
7-level wye-connected H-bridge converter topology for powering a high-speed electric motor
A 7-level wye-connected H-bridge converter that provides redundancy for continued operation when one bridge phase has failed and more particularly to a topology that includes multiple semiconductor...
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7639520 |
Efficient power supply
The present invention is a method and system for efficiently converting an alternating current (AC) supply to a direct current (DC) output. A power supply in accordance with the present invention...
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7633783 |
Converter control device
A converter device which is configured by connecting three converter circuits in parallel is provided between a secondary battery serving as a first power supply and a fuel cell serving as a second...
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7623363 |
Resonant-type switching power supply device
There is provided a switching power supply device having one half-wave rectifying circuit made up of switching elements complementarily turned on or off, a reactor, a current resonance capacitor, a...
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7616467 |
Circuit apparatus for transformerless conversion of an electric direct voltage into an alternating voltage
In a circuit apparatus for transformerless conversion of an electric direct voltage of a two-pole direct voltage source ( 1 ) connected to ground having a first voltage pole (+) and a second...
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7602625 |
Systems and methods for separation of a front end rectifier power system
Systems and methods of converting alternating current (AC) power into direct current (DC) power at an intermediate DC voltage are disclosed. Briefly described, one system embodiment comprises a...
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7602624 |
Current resonance type multi-phase DC/DC converting apparatus having a large capacity without restricting multi-phase
In a current resonance type multi-phase DC/DC converting apparatus for combining, using an output capacitor, M converter output voltages produced by M current resonance type multi-phase DC/DC...
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7586767 |
Limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation
A limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation provides an effective mechanism for determining the characteristic response of an SMPS during normal...
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7586765 |
Switched current power converter with reduced power losses during low load conditions
A switched current power converter includes an input power source, an output terminal, and a plurality of current stages. Each of the current stages includes a converter coupled to the input power...
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7586766 |
Plasma arc power supply and control method for same
Energy loss due to driving a plurality of power supply units simultaneously in a low-current region is prevented, and a more stable load current is obtained. The generation of a load current in a...
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7580271 |
Apparatus and method for suppressing the input current inrush for a voltage converter in a pre-charge stage
An apparatus and method are provided for suppressing the input current inrush for a voltage converter in a pre-charge stage. The voltage converter comprises a power input for receiving an input...
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7573245 |
Multi-phase converter with frequency and phase timing control
A multi-phase converter comprising a plurality of switching circuits each controlled by a phase controller and each providing a switched output voltage to an output node of the converter and...
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7545655 |
Inverter apparatus
An inverter apparatus in which a control power source connected to a microcomputer or a peripheral circuit included in at least one of an inverter main body, a built-in option, and a parameter unit...
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7542314 |
High voltage generation
Systems and methods presented herein generally provide for the controlled voltage of electrical energy through the selected operation of power stages. In one embodiment, a system that provides...
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7535734 |
High power-factor AC/DC converter with parallel power processing
The present invention is an AC/DC (alternating current to direct current) converter. The converter contains two semi-stages. One is the boost-flyback semi-stage that has excellent self-PFC property...
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7532493 |
Power supply with low standby loss
The present invention discloses a power supply device with low standby loss. The power supply device comprises a main power converter and an auxiliary power converter. The main power converter...
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7529110 |
Universal power adapter
A power conversion device for receiving AC and/or DC power and providing a DC output includes: an AC input; a DC input; an output; AC-to-DC converter circuitry coupled to the AC input and to the...
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7522434 |
Temperature estimation based on a signal oscillation
A method of estimating a temperature at a component of a device is provided. The temperature may be used to provide thermal load management of the device. In an exemplary embodiment, a switched...
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7518886 |
Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination
DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two...
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7518264 |
Digital current share method for power supplies in parallel
The present invention relates to a digital current share apparatus and method for supplies in parallel wherein a digital current sharing is used to eliminate oscillations during current sharing by...
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7514911 |
Voltage regulator feedback protection method and apparatus
An integrated circuit comprising a feedback terminal to receive a feedback signal. A voltage regulator has a feedback input to receive the feedback signal from the feedback terminal. The voltage...
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7508686 |
System and method for configuring direct current converter
A method and system to determine a battery mode of an integrated circuit device are presented. The battery mode is selected with respect to first and second direct current to direct current...
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7502233 |
DC power supply using either AC or DC input for both
There is provided a power supply for AC/DC and DC/DC conversion which receives the DC power supplied from airplanes, vehicles and vessels as well as normal AC power, and converts the power to DC...
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7499297 |
Low-harmonics, polyphase converter circuit
A polyphase converter circuit having p≧3 phases (R, Y, B) and a converter circuit element provided for each phase (R, Y, B) is specified, each converter circuit element having a rectifier unit, a...
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7492136 |
Multi-phase converter with improved load step-up transient response
A multi-phase converter comprising a plurality of switching circuits each providing a switched voltage to an output node of the converter and wherein each switching circuit sequentially provides a...
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7480487 |
Power regulation for field instruments
Effective power regulation may be achieved for a field instrument that derives power from a communication signal. In particular aspects, a system and process for power regulation include the...
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7477037 |
Method for parallel control of series-cell based drives
A method for controlling at least two series-cell based drives connected in parallel. The method comprises detecting a failed cell in one of the drives, inhibiting operation of the drive with the...
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7471527 |
Green switch power supply with standby function and its IC
A switch power supply with standby function is disclosed. The power supply can satisfy the need of the green environment protection. And a single ended green switch power supply IC or thick film or...
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7466573 |
Method and apparatus for integrated active-diode-ORing and soft power switching
A method and an apparatus are used for power supply input connection. The apparatus according to one embodiment comprises a first switch module (143_1) connected to a first power supply input (Vin...
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7463500 |
Monopolar DC to bipolar DC to AC converter
An electrical DC-to-AC power conversion apparatus is disclosed that is primarily intended for use with solar photovoltaic sources in electric utility grid-interactive applications. The invention...
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7460377 |
Matrix converter
A matrix converter for converting a polyphase alternating current into a desired alternating output current includes at least two stages; a plurality of controllable bidirectional switches,...
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7457139 |
Power supply apparatus for arc-utilizing apparatuses
A power supply apparatus for use with arc-utilizing apparatuses includes a plurality of power supply blocks of the same capacity. Each power supply block includes an input-side rectifying circuit,...
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7447050 |
Multilevel converter and method of converting a supply voltage
The present disclosure is concerned with a multilevel converter including a transformer arrangement comprising at least two transformer units, each with primary and secondary windings and a...
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7443129 |
Quenching device for a converter bridge with line regeneration
There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition...
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7433800 |
System and method for measuring performance of a voltage regulator module attached to a microprocessor
A system for measuring performance of a voltage regulator module (VRM) attached to a microprocessor includes: a voltage transient tester (VTT) fixture ( 5 ) for setting different working voltage...
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7433214 |
DC converter
A DC converter is connected to a DC source on its input side. On the output side, the DC delivers a converted DC voltage to at least one electric consumer via a cable connection. To improve such a...
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7432692 |
Circuit and method for changing transient response characteristics of a DC/DC converter module
A circuit for, and method of, changing transient response characteristics of a DC/DC converter module having an output rail pin and a trim pin and a distributed power conversion system...
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7428158 |
System and method for reducing harmonic effects on a power delivery system
A power delivery system, and a method for operating it includes a plurality of power cells that are electrically connected to a multi-winding machine comprising one or more primary windings and a...
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7426121 |
Output voltage detection circuit, isolated switching power supply, and semiconductor device
An output voltage detection circuit is provided for accurately detecting a secondary side output voltage based on a voltage induced to an auxiliary winding in an isolated switching power supply...
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7420825 |
Adaptively configured voltage transformation module array
A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally...
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7417878 |
Distributed power supply and method of recovering from error
A distributed power supply is incorporated in a device including a plurality of PCB. An on-board power supply is provided in the distributed power supply. The on-board power supply individually...
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7414868 |
Switched current power converter with partial converter decoupling for low load conditions
A switched current power converter including an input power source, an output terminal, and a plurality of current stages. Each current stage includes a converter coupled to the input power source...
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7412612 |
Dynamically optimized power converter
A device and method for dynamically optimizing a power converter is disclosed. The dynamically optimized power converter unit includes a processor that maximizes efficiency of a power converter...
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7403400 |
Series interleaved boost converter power factor correcting power supply
A power factor correcting power supply includes an input stage power converter and an output stage power converter. The input stage power converter includes a plurality of series connected boost...
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7394674 |
Backup power supply with parallel AC power source and DC power source
Provided is a backup power supply comprising at least one DC/DC power electrically connected to a DC power source for taking DC current therefrom prior to providing regulated DC current, at least...
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7394232 |
Interleaved switching converters in ring configuration
A switched mode power supply assembly that has a plurality of power supply modules cyclically coupled to each other. Each power supply module has a synchronization control module for generating a...
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7342386 |
Multiphase power converter having balanced currents
A power converter includes multiple phase circuits, each phase circuit includes a power switch for delivering power to an output of the power converter, a current sensor connected to the power...
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7342383 |
Apparatus and method for smooth DCM-to-CCM transition in a multi-phase DC-DC converter
A multi-phase regulator that provides a smooth transition between DCM and CCM by employing partially synchronous rectification in which a duty cycle of a synchronous switch enable signal is...
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7339803 |
Inverter bridge short-circuit protection scheme
A fault handling system for short circuit recovery in three-phase multiple-level inverter bridges, used to drive inductive loads, to assure a proper sequence for turning-off switches in the...
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7330362 |
Switching converter having at least two converter stages
One embodiment of the invention relates to a switching converter having at least two converter stages, an output and an actuation circuit. The at least two converter stages each have power supply...
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