ClassID:

217837

H02M3/285 - CPC Classification

Classification description:

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 Single converters with a plurality of output stages connected in parallel

Recent Application in this class:
#1
20260142575
2026-05-21

POWER APPARATUS APPLIED IN SOLID STATE TRANSFORMER STRUCTURE AND THREE-PHASE POWER SYSTEM HAVING THE SAME

#2
20260031717
2026-01-29

MULTI-PHASE POWER CONVERTER CIRCUIT LAYOUT TO MINIMIZE DRIVE LOOP AND POWER LOOP INDUCTANCES

#3
20250373168
2025-12-04

SWITCHING POWER SUPPLY DEVICE

#4
20250309751
2025-10-02

POWER SUPPLY DEVICE WITH HIGH OUTPUT STABILITY

#5
20250167691
2025-05-22

LAGGING LEG ELIMINATION PHASE-SHIFT FULL-BRIDGE CONVERTER CIRCUIT

#6
20250088117
2025-03-13

BATTERY PACK WITH TRIPLE-ACTIVE BRIDGE DC-DC CONVERTER

#7
20250030347
2025-01-23

POWER APPARATUS APPLIED IN SOLID STATE TRANSFORMER STRUCTURE AND THREE-PHASE POWER SYSTEM HAVING THE SAME

#8
20240372361
2024-11-07

POWER MANAGER WITH RECONFIGURABLE POWER CONVERTING CIRCUITS

#9
20240178741
2024-05-30

Power converter having a solid-state transformer and a half bridge converter stage for each isolated DC output of the solid-state transformer

#10
20240077554
2024-03-07

Conduction Cooled Cryogenic Current Source with a High-Temperature Superconducting Filter

#11
20240072677
2024-02-29

PARTIAL POWER DC-DC CONVERTER WITH CONTROLLABLE TOPOLOGY

#12
20240014740
2024-01-11

Power apparatus applied in solid state transformer structure and three-phase power system having the same

#13
20240006989
2024-01-04

RESONANCE POWER SUPPLY CIRCUIT

#14
20230396169
2023-12-07

ELECTRIC POWER CONVERSION DEVICE AND CONTROL METHOD OF ELECTRIC POWER CONVERSION DEVICE

#15
20230353061
2023-11-02

Multi-PATH resonant circuit and resonant converter

#16
20230179092
2023-06-08

Power conversion circuit for increasing conversion efficiency

#17
20230164958
2023-05-25

Power conversion device

#18
20230163682
2023-05-25

PARALLEL-CONNECTED RESONANT CONVERTER CIRCUITS

#19
20230037399
2023-02-09

Power apparatus applied in solid state transformer structure and three-phase power system having the same

#20
20230025847
2023-01-26

Audio power source with improved efficiency

#21
20230022784
2023-01-26

Power converter for enabling simultaneous transmission of power between multiple voltage parts

#22
20220393582
2022-12-08

Gate controller for a charge pump converter

#23
20220393581
2022-12-08

Gate controller for a charge pump converter

#24
20220294353
2022-09-15

Parallel branched resonant converter

#25
20220247319
2022-08-04

Method for operating a DC-DC voltage converter apparatus and control device for operating a DC-DC voltage converter apparatus

#26
20220181978
2022-06-09

Power manager with reconfigurable power converting circuits

#27
20220158562
2022-05-19

Integrated inductor and a power conversion module including the integrated inductor

#28
20220157516
2022-05-19

Magnetic integrated device, power conversion circuit, charger, and electric vehicle

#29
20220140746
2022-05-05

Power conversion system with N power converters, each having 2 outputs

#30
20220103078
2022-03-31

Interleaved switching converter with quasi-resonant control and control method thereof

#31
20220085721
2022-03-17

LLC power supply current-sharing and frequency locking mechanism

#32
20220077773
2022-03-10

Power balancing in interleaved LLC converters via duty cycle variation

#33
20220060121
2022-02-24

Current balancing for interleaved power converters

#34
20220048128
2022-02-17

Method and apparatus for providing welding type power with flux balancing

#35
20210399650
2021-12-23

Voltage supply system and power source constituting same

#36
20210362262
2021-11-25

Methods for welding with a power supply with output rectifier and phase shift double forward converter

#37
20210351709
2021-11-11

Resonant converter controller circuit for controlling resonant converter converting input DC voltage into DC voltage

#38
20210349486
2021-11-11

Power combiner and balancer

#39
20210346972
2021-11-11

Method and Apparatus For Providing Welding Type Power

#40
20210305902
2021-09-30

Welding power supply with extended voltage characteristic

#41
20210167744
2021-06-03

Audio power source with improved efficiency

#42
20210159797
2021-05-27

Control device of multi-phase converter and power supply system

#43
20210152091
2021-05-20

Resonant converter having multiple transformers and a parallel inductor

#44
20210135588
2021-05-06

Alternating current solid-state switch

#45
20210099095
2021-04-01

Power converter and control method of power converter that reduce ringing

#46
20210099075
2021-04-01

Loop Handoff Transient Mitigation for Multi-Loop Switch Mode Power Converters

#47
20210075326
2021-03-11

Power manager with reconfigurable power converting circuits

#48
20210050792
2021-02-18

Single-stage DC-DC power converter

#49
20210028689
2021-01-28

Starter circuit for energy harvesting circuits

#50
20210006236
2021-01-07

Active clamp capacitor balancing

#51
20200382009
2020-12-03

Multi output DC/DC converter and method for controlling the same

#52
20200381176
2020-12-03

Transformer for a three-port voltage converter, three-port voltage converter and method for transmitting electrical power

#53
20200293073
2020-09-17

Power combiner and balancer

#54
20200259420
2020-08-13

Multi-path power factor correction

#55
20200234869
2020-07-23

Power converter

#56
20200228082
2020-07-16

Audio power source with improved efficiency

#57
20200212807
2020-07-02

Multi-output hybrid converters

#58
20200212795
2020-07-02

Hybrid converter family and methods thereof

#59
20200204079
2020-06-25

LLC resonant converter system

#60
20200169164
2020-05-28

Resonant flyback converter with capacitor coupled to ground

#61
20200119650
2020-04-16

Lossless snubber circuits

#62
20200106365
2020-04-02

Idle ring detection for a multi-output power converter

#63
20200076311
2020-03-05

Isolated DC/DC converter for controlling power flows between three DC terminals

#64
20200036284
2020-01-30

Power isolator exhibiting low electromagnetic interference

#65
20200028440
2020-01-23

Method for controlling extraction of power from multiple photo voltaic (PV) arrays and system thereof

#66
20190312517
2019-10-10

Multiple parallel-connected resonant converter, inductor-integrated magnetic element and transformer-integrated magnetic element

#67
20190312516
2019-10-10

Multiple parallel-connected resonant converter, inductor-integrated magnetic element and transformer-integrated magnetic element

#68
20190296649
2019-09-26

Energy-harvesting power supplies

#69
20190296646
2019-09-26

Power manager with reconfigurable power converting circuits

#70
20190252987
2019-08-15

Power conversion device

#71
20190229685
2019-07-25

Semiconductor device and manufacturing method thereof

#72
20190222129
2019-07-18

Power converter topologies and control methods for wide input and output voltage ranges

#73
20190214956
2019-07-11

Audio power source with improved efficiency

#74
20190214922
2019-07-11

Converter with ZVS

#75
20190201996
2019-07-04

Metal working power supply converter system and method

#76
20190199238
2019-06-27

Power conversion device, cooling structure, power conversion system, and power supply device

#77
20190115838
2019-04-18

Lossless snubber circuits

#78
20190115837
2019-04-18

Voltage converter controller, voltage controller and corresponding methods

#79
20190115779
2019-04-18

On-board charging system

#80
20190111512
2019-04-18

Systems and methods to reduce magnetic flux in a transformer in a switched mode power supply

#81
20190109542
2019-04-11

Magnetic integrated device including multiple core columns and windings and power conversion circuit

#82
20190109539
2019-04-11

Serial input power converter

#83
20190103815
2019-04-04

Electrical-power-supplying device for a wall plug provided with a connector and wall plug provided with a connector and comprising such an electrical-power-supplying device

#84
20190089264
2019-03-21

Synchronous rectifier circuit and switching power supply apparatus

#85
20190061038
2019-02-28

Method and apparatus for providing welding type power

#86
20190058409
2019-02-21

Electric power conversion device

#87
20190052180
2019-02-14

Current balance control for resonant converters systems

#88
20190044447
2019-02-07

Modular parallel technique for resonant converter

#89
20190028034
2019-01-24

Single-stage DC-DC power converter

#90
20190013741
2019-01-10

Resonant DC-DC converter

#91
20180367050
2018-12-20

Welding power supply with extended voltage characteristic

#92
20180367049
2018-12-20

Welding power supply with extended voltage characteristic

#93
20180367041
2018-12-20

Dual-capacitors-based AC line frequency low voltage DC power supply circuit

#94
20180338366
2018-11-22

Multi-channel independent control circuit of lighting power supply

#95
20180331615
2018-11-15

Secondary-side control circuit, control method and flyback converter thereof

#96
20180323725
2018-11-08

Systems and methods for synchronizing converter modules

#97
20180323720
2018-11-08

Integrated magnetic component and power converter

#98
20180309302
2018-10-25

Power control current sharing circuit

#99
20180304394
2018-10-25

Welding type power supply with output rectifier and phase shift double forward converter

#100
20180290544
2018-10-11

Electric vehicle power distribution system

#101
20180281609
2018-10-04

Electric charger system for electric or hybrid vehicle

#102
20180269772
2018-09-20

LLC power supply current-sharing and frequency locking mechanism

#103
20180254694
2018-09-06

Interleaved Phase Shift Modulated DC-DC Converter

#104
20180248490
2018-08-30

Communication circuit for flyback power converter with synchronous rectifier

#105
20180226182
2018-08-09

Matrix transformer and winding structure

#106
20180212457
2018-07-26

Method and system for operating a DC-DC converter of an electrical system to distribute a load

#107
20180198373
2018-07-12

Four-switch three phase DC-DC resonant converter

#108
20180191268
2018-07-05

Multilevel inverter for cryogenic power systems

#109
20180182527
2018-06-28

Device

#110
20180175720
2018-06-21

Power conversion device and power supply system using same

#111
20180150092
2018-05-31

Power combiner and balancer

#112
20180141148
2018-05-24

Method and apparatus for providing welding type power

#113
20180138819
2018-05-17

Bidirectional DC-to-DC converter with voltage limitation device including switching element and voltage limitation capacitor

#114
20180138815
2018-05-17

VOLTAGE CONVERTING DEVICE

#115
20180138714
2018-05-17

Power system for multiple power sources

#116
20180131283
2018-05-10

Power delivery device, AC adapter, AC charger, electronic apparatus and power delivery system

#117
20180131281
2018-05-10

Power supply circuit including converter and power supply system using the same

#118
20180097441
2018-04-05

POWER CONVERSION DEVICE

#119
20180083539
2018-03-22

Output ripple reduction for power converters

#120
20180076726
2018-03-15

Voltage conversion module and bobbin

#121
20180069485
2018-03-08

Power conversion system

#122
20180062528
2018-03-01

Interleaved resonant converter

#123
20180062522
2018-03-01

Power converters

#124
20180061560
2018-03-01

Multiple phase power converters having integrated magnetic cores for transformer and inductor windings

#125
20180041128
2018-02-08

Electrical circuit for isolated voltage conversion

#126
20180040415
2018-02-08

Isolation transformer

#127
20180026524
2018-01-25

Power supply device and control method

#128
20180019678
2018-01-18

Lossless snubber circuits

#129
20170373606
2017-12-28

Communication circuit for flyback power converter with synchronous rectifier

#130
20170358995
2017-12-14

Power converter having multiple switching legs

#131
20170353099
2017-12-07

Secondary-side control circuit, control method and flyback converter thereof

#132
20170346335
2017-11-30

Power conversion device and method for preventing abnormal shutdown thereof

#133
20170331377
2017-11-16

Switching converter, control unit and method for operating a switching converter circuit device

#134
20170310210
2017-10-26

Controller for multiphase boost converters

#135
20170294849
2017-10-12

Multiphase DC power supply with high switching frequency

#136
20170250612
2017-08-31

Isolated switching power converter with data communication between primary and secondary sides

#137
20170244325
2017-08-24

Adaptable high efficiency power inverter system

#138
20170222545
2017-08-03

Power factor improving converter, and power supply device including power factor improving converter

#139
20170214330
2017-07-27

Multiple parallel-connected resonant converter, inductor-integrated magnetic element and transformer-integrated magnetic element

#140
20170189983
2017-07-06

Welding power supply with interleaved inverter circuitry

#141
20170163174
2017-06-08

Voltage converter comprising an isolated DC/DC converter circuit

#142
20170149248
2017-05-25

Interface for renewable energy system

#143
20170133940
2017-05-11

LLC resonant converter having multiple transformers and a parallel inductor

#144
20170133937
2017-05-11

Power supplying apparatus with piezoelectric transformers

#145
20170129034
2017-05-11

Metal working power supply converter system and method

#146
20170126010
2017-05-04

Power converter system for renewable energy sources

#147
20170093164
2017-03-30

Photovoltaic power conditioning units

#148
20170077737
2017-03-16

Core contactless LLC charger and controlling method thereof

#149
20170025963
2017-01-26

Power supply device

#150
20170025956
2017-01-26

Power supply apparatus

#151
20170005571
2017-01-05

Current balance circuit and the method thereof

#152
20160373013
2016-12-22

Phase-shifting a synchronization signal to reduce electromagnetic interference

#153
20160365793
2016-12-15

Switching power supply unit

#154
20160357202
2016-12-08

Parallel current-sharing device and control method without current-sharing bus

#155
20160322898
2016-11-03

Controller for multiphase boost converters

#156
20160322828
2016-11-03

Power system for multiple power sources

#157
20160301318
2016-10-13

Power supply system with photocoupler drive circuit

#158
20160261205
2016-09-08

Multi-cell power conversion method with failure detection and multi-cell power converter

#159
20160259353
2016-09-08

Power combiner and balancer

#160
20160254757
2016-09-01

Apparatus and method for multiple primary bridge resonant converters

#161
20160254756
2016-09-01

Magnetic integrated device for coupling with a three-phase parallel circuit and power conversion circuit

#162
20160241137
2016-08-18

Energy router for energy internet

#163
20160218633
2016-07-28

Multi-output power supply

#164
20160218618
2016-07-28

Power supply device and control method thereof

#165
20160197555
2016-07-07

LLC balancing

#166
20160190940
2016-06-30

Resonant DC/DC power converting circuit and method for controlling the same

#167
20160181917
2016-06-23

Switched mode power supply output stage configuration

#168
20160164423
2016-06-09

Quasi-resonant magnetron power supply

#169
20160164418
2016-06-09

LLC balancing

#170
20160164400
2016-06-09

Digital stress sharing control loops for point of load converters

#171
20160163496
2016-06-09

Volumetrically efficient miniature X-ray system

#172
20160141950
2016-05-19

Thermal management in a multi-phase power system

#173
20160139619
2016-05-19

Thermal management in a multi-phase power system

#174
20160105114
2016-04-14

Multiphase power circuit

#175
20160105101
2016-04-14

Systems and methods for measuring power system current using OR-ing MOSFETs

#176
20160099651
2016-04-07

DC-DC power conversion circuit with magnetic and capacitive isolation

#177
20160093432
2016-03-31

Interleaved transformer/inductor

#178
20160079871
2016-03-17

Switching power supply circuit

#179
20160079870
2016-03-17

Switching power supply circuit

#180
20160072388
2016-03-10

Method and device for controlling a multiphase resonant DC/DC converter, and corresponding multiphase converter

#181
20160065081
2016-03-03

Multi-level DC-DC converter with galvanic isolation and adaptive conversion ratio

#182
20160065077
2016-03-03

DC power supply equipment

#183
20160043633
2016-02-11

High voltage power converter with a configurable input

#184
20160043623
2016-02-11

Bidirectional low voltage power supply (LVPS) with single pulse width modulator (PWM), cryogenic cooler system, and method

#185
20160020016
2016-01-21

Integrated magnetics transformer assembly

#186
20160013724
2016-01-14

Multiphase DC/DC converters and control circuits for controlling converters using fixed and/or variable frequencies

#187
20160006346
2016-01-07

POWER SUPPLY DEVICE, ON-BOARD POWER SUPPLY DEVICE, AND ELECTRIC AUTOMOBILE

#188
20150381035
2015-12-31

Droop reduction circuit for charge pump buck converter

#189
20150372598
2015-12-24

Electric power converter apparatus which attenuates frequency components of ripple in output current

#190
20150365002
2015-12-17

Power conversion system and power conversion method

#191
20150357921
2015-12-10

Interleaved LLC current equalizing converter

#192
20150333636
2015-11-19

Electric power converter

#193
20150316948
2015-11-05

Method for distributing the total conversion power between the converters of a multiple-converter conversion device

#194
20150303814
2015-10-22

Direct current to direct current power supply apparatus

#195
20150249394
2015-09-03

Interleaved resonant converter

#196
20150229225
2015-08-13

System and methods for controlling secondary side switches in resonant power converters

#197
20150229218
2015-08-13

Power conversion apparatus

#198
20150229216
2015-08-13

Current balance circuit of resonant type switching power-supply circuit

#199
20150222191
2015-08-06

Power conversion apparatus

#200
20150222183
2015-08-06

Voltage droop control in a voltage-regulated switched mode power supply

#201
20150222116
2015-08-06

Control board for controlling channel sequencing of positive and negative DC voltage and current

#202
20150207456
2015-07-23

Power conversion apparatus, photovoltaic module and communication device and photovoltaic system including the same

#203
20150200584
2015-07-16

Power conversion apparatus and photovoltaic module including the same

#204
20150194905
2015-07-09

Universal AC to DC converter

#205
20150171757
2015-06-18

Multiple-output DC/DC converter and power supply having the same

#206
20150109833
2015-04-23

Smart grid power converter

#207
20150103564
2015-04-16

Parallel resonant converter capable of controlling output voltage and control method thereof

#208
20150103561
2015-04-16

Apparatus and method for multiple primary bridge resonant converters

#209
20150092454
2015-04-02

Interleaved forward converter with wide input and output dynamic range

#210
20150092451
2015-04-02

Power converters

#211
20150070943
2015-03-12

High efficiency zero-voltage switching (ZVS) assistance circuit for power converter

#212
20150053660
2015-02-26

Method and apparatus for providing welding type power with flux balancing

#213
20150015071
2015-01-15

Post-regulated flyback converter with variable output stage

#214
20140376278
2014-12-25

Method and apparatus for providing power conversion using an interleaved flyback converter with reactive power control

#215
20140376268
2014-12-25

Metal working power supply converter system and method

#216
20140374397
2014-12-25

Method and apparatus for providing welding type power

#217
20140368175
2014-12-18

High precision DC to DC converter with wide load range and gate drive circuit for use therein

#218
20140354057
2014-12-04

Resonant converter apparatus and control method for the same

#219
20140340947
2014-11-20

Power supply device and power supply switching method

#220
20140340941
2014-11-20

Droop current sharing power converter with controlled transitions between regulation set points

#221
20140340940
2014-11-20

Integrated magnetics component

#222
20140307481
2014-10-16

Systems and methods for high power DC/DC conversion using voltage converter cells

#223
20140301112
2014-10-09

Tracking energy consumption using a fly-back converter technique

#224
20140268931
2014-09-18

Power conversion system with a DC to DC boost converter

#225
20140268907
2014-09-18

Multiphase converter with active and passive internal current sharing

#226
20140268906
2014-09-18

Interleaved LLC converters and current sharing method thereof

#227
20140268891
2014-09-18

Multiphase DC/DC converters and control circuits for controlling converters using fixed and/or variable frequencies

#228
20140266074
2014-09-18

DC power signal generation for electro-chemical reactor

#229
20140265588
2014-09-18

AC battery employing Magistor technology

#230
20140240051
2014-08-28

Audio amplifier power supply with inherent power factor correction

#231
20140237280
2014-08-21

Power supply system with a plurality of power supply circuits and control method of the same

#232
20140217959
2014-08-07

Hybrid bootstrap capacitor refresh technique for charger/converter

#233
20140185329
2014-07-03

Power supply apparatus

#234
20140177288
2014-06-26

Flyback converter having auxiliary switch and auxiliary inductor

#235
20140111016
2014-04-24

Staggered parallel three-level DC/DC converter and AC/DC converter

#236
20140111008
2014-04-24

Modular power supply for distribution automation system

#237
20140021180
2014-01-23

Method and apparatus for providing welding type power

#238
20140016368
2014-01-16

Magnetic device and power converter employing the same

#239
20140009985
2014-01-09

LLC balancing

#240
20130322129
2013-12-05

Insulation-type power factor correction circuit

#241
20130294126
2013-11-07

Photovoltaic power conditioning units

#242
20130285460
2013-10-31

Power adapter having programmable gain compensation trim

#243
20130250634
2013-09-26

Method and apparatus for power conversion

#244
20130250624
2013-09-26

Method and apparatus for power conversion

#245
20130249295
2013-09-26

Photovoltaic system having power-increment-aided incremental-conductance maximum power point tracking controller using variable-frequency and constant-duty control and method thereof

#246
20130242621
2013-09-19

Phase-shifting a synchronization signal to reduce electromagnetic interference

#247
20130234526
2013-09-12

Multiphase power converters involving controllable inductors

#248
20130214750
2013-08-22

Voltage converter and voltage conversion method having multiple converter stages

#249
20130188399
2013-07-25

DC-to-DC converter having secondary-side digital sensing and control

#250
20130099559
2013-04-25

Power supply system

#251
20130083575
2013-04-04

Multiphase power converters having shared magnetic core sections

#252
20130083563
2013-04-04

System and methods for high power DC/DC converter

#253
20130051082
2013-02-28

SWITCHING POWER SUPPLY

#254
20130033315
2013-02-07

Audio amplifier power supply with inherent power factor correction

#255
20130003431
2013-01-03

Multilevel power converter and methods of manufacturing and operation thereof

#256
20120327688
2012-12-27

Paralleled power converters with auto-stagger start-up

#257
20120262953
2012-10-18

Power converter using multiple phase-shifting quasi-resonant converters

#258
20120236610
2012-09-20

Multiple resonant converter apparatus and control method

#259
20120217948
2012-08-30

Method for distributing the total conversion power between the converters of a multiple-converter conversion device

#260
20120217938
2012-08-30

Multi-path power factor correction

#261
20120206946
2012-08-16

On/off modulation of a switching cell-based power converter

#262
20120206943
2012-08-16

Very high frequency switching resonant synchronous rectification

#263
20120201052
2012-08-09

Measurement transducer

#264
20120176817
2012-07-12

DC-DC CONVERTER

#265
20120169120
2012-07-05

Method for reducing electromagnetic interference radiated from a power supply arrangement

#266
20120153730
2012-06-21

Interleaved LLC converter employing active balancing

#267
20120113688
2012-05-10

Interleaved flyback converter device with leakage energy recycling

#268
20120092898
2012-04-19

Alternating current to direct current power conversion

#269
20120081934
2012-04-05

Photovoltaic power conditioning units

#270
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2012-04-05

Photovoltaic Power Systems

#271
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2012-03-22

Very high frequency switching cell-based power converter

#272
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2012-02-23

INTEGRATED PHOTOVOLTAIC MODULE

#273
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2012-02-02

Double phase-shifting full-bridge DC-to-DC converter

#274
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2012-02-02

Dual output power supply

#275
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2011-12-29

Voltage converter and voltage conversion method

#276
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2011-11-17

Multiple Output Isolated DC/DC Power Converters

#277
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2011-11-17

Multiple Output Isolated DC/DC Power Converters

#278
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2011-09-29

Switch control device, multi-channel converter including the same, and switch controlling method

#279
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2011-09-01

Low output voltage converter utilizing distributed secondary circuits

#280
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2011-04-07

Power supply device and uniform current control method

#281
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2011-03-31

Single stage power conversion unit with circuit to smooth and holdup DC output voltage

#282
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2011-03-03

Switching power-supply apparatus

#283
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2011-01-20

Method and apparatus for converting direct current to alternating current

#284
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2010-11-25

POWER SOURCE MODULE WITH BROAD INPUT VOLTAGE RANGE

#285
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2010-11-25

Extensible switching power circuit

#286
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2010-09-23

LED driving circuit

#287
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2010-08-12

System and method for electrical power conversion

#288
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2010-05-20

Interleaved LLC power converters and method of manufacture thereof

#289
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2010-04-29

Optimizing delivery of regulated power from a voltage regulator to an electrical component

#290
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2010-03-18

DUAL INTERLEAVED FLYBACK CONVERTER FOR HIGH INPUT VOLTAGE

#291
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2010-02-04

Multiple output isolated DC/DC power converters

#292
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2009-10-15

Switching power supply circuit and surge absorbing circuit

#293
20090219738
2009-09-03

Power supply device, in particular for redundant operation with a plurality of further power supply devices connected in parallel on the output side

#294
20090184703
2009-07-23

VOLTAGE COMPENSATOR FOR DUAL-SECONDARY VOLTAGE TRANSFORMERS

#295
20090174257
2009-07-09

Large power multi-outputs power supply structure having relatively high efficiency in load range and controlling method thereof

#296
20090167278
2009-07-02

Power supply with separate line regulation and load regulation

#297
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2009-06-04

HARMONICS RELATED SYNCHRONIZATION FOR SWITCHING REGULATORS

#298
20090109709
2009-04-30

Switching power supply with smoothing circuitry for more stable output

#299
20090108767
2009-04-30

DC/DC converter device and discharge lamp lighting device

#300
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2009-02-19

Magnetic integrated circuit for multiphase interleaved flyback converter and controlling method thereof