CN110034681A - A kind of crisscross parallel ZVZCS high boosting DC/DC converter - Google Patents

A kind of crisscross parallel ZVZCS high boosting DC/DC converter Download PDF

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Publication number
CN110034681A
CN110034681A CN201910351270.XA CN201910351270A CN110034681A CN 110034681 A CN110034681 A CN 110034681A CN 201910351270 A CN201910351270 A CN 201910351270A CN 110034681 A CN110034681 A CN 110034681A
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diode
capacitor
inductance
switching tube
connection
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CN110034681B (en
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邾玢鑫
黄杨
王辉
杨楠
佘小莉
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China Three Gorges University CTGU
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China Three Gorges University CTGU
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A kind of crisscross parallel ZVZCS high boosting DC/DC converter, including inductanceL 1, inductanceL 2, switching tube S1, switching tube S2, passive snubber circuit, first voltage multiplication units, second voltage multiplication units, passive snubber circuit includes diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, capacitorC 1, capacitorC 2, inductanceL S1, inductanceL S2, first voltage multiplication units include diode D7, diode D8, capacitorC 1a, capacitorC 1b, second voltage multiplication units include diode D9, diode D10, capacitorC 2a, capacitorC 2b.The present invention makes switching tube S1, S2 realize Sofe Switch, reduces and turn on and off loss, converter working efficiency is improved by the way that auxiliary circuit is added；Auxiliary circuit is free of active component, and topological structure is relatively simple, at low cost, does not influence former convertor controls strategy and performance.

Description

A kind of crisscross parallel ZVZCS high boosting DC/DC converter
Technical field
The invention belongs to DC/DC converter fields, and in particular to a kind of crisscross parallel ZVZCS high boosting DC/DC converter.
Background technique
Photovoltaic power generation is developed rapidly in recent years, because photovoltaic cell output voltage is lower, it is difficult to be directly inverter The direct current for meeting voltage requirement is provided, high-gain DC/DC converter is widely applied wherein.But such existing transformation Sofe Switch is not implemented in device more, and it is big to there is a problem of that switching tube turns on and off loss.Attached drawing 2 show a kind of based on voltage gain The high-gain DC/DC converter that unit is realized, compared to traditional Boost, semiconductor devices electricity high with the ratio of gains The advantages such as compression is low.But all switching tubes are in hard switching state in the converter, thus converter working efficiency is lower.
Summary of the invention
Technical problem of the invention is that all switching tubes of existing DC/DC converter are in hard switching state, converter Working efficiency is lower, and it is big to there is a problem of that switching tube turns on and off loss.The object of the present invention is to provide a kind of crisscross parallels ZVZCS(Zero Voltage and Zero Current Switch) height boosting DC/DC converter, pass through and auxiliary electricity is added Road makes switching tube realize Sofe Switch, and reduction turns on and off loss, improves converter working efficiency.
The DC/DC converter the technical scheme is that a kind of crisscross parallel ZVZCS high boosts, including inductanceL 1, inductanceL 2, switching tube S1, switching tube S2, passive snubber circuit, first voltage multiplication units, second voltage multiplication units, passive snubber electricity Road includes diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, capacitorC 1, capacitorC 2, inductanceL S1, inductanceL S2, first voltage multiplication units include diode D7, diode D8, capacitorC 1a, capacitorC 1b, second voltage multiplication list Member includes diode D9, diode D10, capacitorC 2a, capacitorC 2b。
InductanceL 1One end and DC power supplyEAnode connection, the other end respectively with switching tube S1Drain electrode, diode D1Anode Connection.
InductanceL 2One end and DC power supplyEAnode connection, the other end respectively with switching tube S2Drain electrode, diode D6Cathode Connection.
Switching tube S1Source electrode respectively with switching tube S2Source electrode, diode D3Cathode, diode D7Cathode, DC power supplyEIt is negative Pole connection.
Diode D2Anode respectively with diode D1Cathode, diode D5Cathode, capacitorC 1One end connection, capacitor C1It is another One end respectively with diode D5Anode, diode D6Cathode, capacitorC 2One end connection, capacitorC 2The other end respectively with two poles Pipe D3Anode, diode D4Cathode, diode D6Anode connection.
CapacitorC 1aOne end respectively with diode D2Cathode, diode D8Cathode, diode D10Anode connection.
CapacitorC 1aThe other end respectively with inductanceL S1One end, capacitorC 1bOne end connection, inductanceL S1The other end and switch Pipe S1Drain electrode connection, capacitorC 1bThe other end respectively with diode D4Anode, diode D7Anode, diode D9Cathode connection.
CapacitorC 2aOne end and diode D10Cathode connection, capacitorC 2aThe other end respectively with inductanceL S2One end, capacitor C2bOne end connection, inductanceL S2The other end and switching tube S2Drain electrode connection, capacitorC 2bThe other end and diode D9Anode Connection.
Further, switch tube S1With switching tube S2Using Interleaved control strategy, switching tube S1With switching tube S2Driving Signal phase differs 180 °.
Beneficial effects of the present invention:
1) by the way that auxiliary circuit is added, make switching tube S1、S2Sofe Switch is realized, reduces and turns on and off loss, converter Working efficiency is improved；
2) passive snubber circuit of the invention, topological structure are relatively simple, at low cost, do not influence former convertor controls strategy and property Energy.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the circuit diagram of crisscross parallel ZVZCS high boosting DC/DC converter.
Fig. 2 is the circuit diagram of the high-gain DC/DC converter based on voltage gain unit.
Fig. 3 switching tube S1、S2Drive signal waveform figure.
Fig. 4 is switching tube S1、S2Voltage and current waveform diagram.
Fig. 5 is switching tube S1Voltage and current waveform enlarged drawing.
Fig. 6 is switching tube S2Voltage and current waveform enlarged drawing.
Fig. 7 is inductanceL 1、L 2、L S1、L S2Current waveform figure.
Fig. 8 is capacitorC 1、C 2、C 1a、C 1b、C 2a、C 2bVoltage oscillogram.
Specific embodiment
The DC/DC converter as shown in Figure 1, a kind of crisscross parallel ZVZCS high boosts, including inductanceL 1, inductanceL 2, switching tube S1, switching tube S2, passive snubber circuit, first voltage multiplication units, second voltage multiplication units, passive snubber circuit include two Pole pipe D1, diode D2, diode D3, diode D4, diode D5, diode D6, capacitorC 1, capacitorC 2, inductanceL S1, inductanceL S2, first voltage multiplication units include diode D7, diode D8, capacitorC 1a, capacitorC 1b, second voltage multiplication units include two Pole pipe D9, diode D10, capacitorC 2a, capacitorC 2b。
InductanceL 1One end and DC power supplyEAnode connection, the other end respectively with switching tube S1Drain electrode, diode D1Anode Connection.
InductanceL 2One end and DC power supplyEAnode connection, the other end respectively with switching tube S2Drain electrode, diode D6Cathode Connection.
Switching tube S1Source electrode respectively with switching tube S2Source electrode, diode D3Cathode, diode D7Cathode, DC power supplyEIt is negative Pole connection.
Diode D2Anode respectively with diode D1Cathode, diode D5Cathode, capacitorC 1One end connection, capacitorC 1It is another One end respectively with diode D5Anode, diode D6Cathode, capacitorC 2One end connection, capacitorC 2The other end respectively with two poles Pipe D3Anode, diode D4Cathode, diode D6Anode connection.
CapacitorC 1aOne end respectively with diode D2Cathode, diode D8Cathode, diode D10Anode connection.
CapacitorC 1aThe other end respectively with inductance LS1One end, capacitorC 1bOne end connection, inductance LS1The other end and switch Pipe S1Drain electrode connection, capacitor C1bThe other end respectively with diode D4Anode, diode D7Anode, diode D9Cathode connection.
CapacitorC 2aOne end and diode D10Cathode connection, capacitorC 2aThe other end respectively with inductanceL S2One end, capacitorC 2bOne end connection, inductanceL S2The other end and switching tube S2Drain electrode connection, capacitorC 2bThe other end and diode D9Anode Connection.
Switch tube S1With switching tube S2Using Interleaved control strategy, switching tube S1With switching tube S2Driving signal phase 180 ° of difference.
When crisscross parallel ZVZCS high boosting DC/DC converter of the invention works, pass through controller control switch pipe S1With Switching tube S2Turn-on and turn-off, successively switch between 4 kinds of working conditions, working condition is as follows:
Mode 1: controller control switch pipe S1Shutdown, switching tube S2Conducting.InductanceL 1Electric discharge, inductanceL 2Charging.Switching tube S1It closes Disconnected moment, inductanceL 1Start to discharge, electric current a part passes through diode D1To capacitorC 1Charging, flows back to switching tube S2, another part To inductanceL S1And capacitorC 1bCharging, passes through diode D4, capacitorC 2Flow to switching tube S2, this process capacitorC 1, capacitorC 1b, electricity SenseL S1Charging, capacitorC 2Electric discharge, capacitorC 2Voltage is dropped rapidly to 0, while inductanceL S1Electric current rises very rapidly up toi L1；CapacitorC 2It puts When electricity finishes, capacitorC 1Voltage does not rise to alsou C1b, therefore inductanceL S1Right end voltage is higher than left end,i LS1Electric current can decline, electricity HoldC 1Continue to charge, untilu C1=u C1bAfterwards, electric currenti LS1Again it rises toi L1.This process inductanceL S2Reverse charging, inductanceL S1Electricity Stream is fallen before to be risen to againi L1, capacitorC 1b、C 2aVoltage rises, capacitorC 1aVoltage decline.This mode switch pipe S1It is realized when shutdown Zero voltage turn-off.
Mode 2: controller control switch pipe S1Conducting, switching tube S2Conducting.InductanceL 1、L 2Charging.Switching tube S1Wink is connected Between, due to inductanceL S1Electric current cannot be mutated, inductanceL S1It can be from former Lu Fang electricity, inductanceL S1Electric current, inductanceL S2Electric current is dropped rapidly to 0, switching tube S at this time1Realize zero current turning-on.InductanceL S1, inductanceL S2Pass through inductanceL S1, capacitorC 1a, capacitorC 2a, inductanceL S2, switching tube S2, switching tube S1The branch and inductance of compositionL S1, capacitorC 1b, diode D7, switching tube S1The branch of composition carries out Electric discharge；At this time due to capacitorC 1Voltage is greater than capacitorC 1aVoltage, capacitorC 1Diode D can be passed through2, capacitorC 1a, to inductanceL S1Instead To charging, capacitor at this timeC 1、C 1a, diode D2And inductanceL S1A resonant element is formed, until inductanceL S1Electric current falls to 0, Capacitor at this timeC 1Voltage is less than capacitorC 1aVoltage.
Mode 3: controller control switch pipe S1Conducting, switching tube S2Shutdown.InductanceL 1Charging, inductanceL 2Electric discharge.Switching tube S2Shutdown moment, capacitorC 2Charging, switching tube S2Realize zero voltage turn-off.Work as capacitorC 2Voltage rises tou C1+u C2=u C1aWhen, electricity HoldC 1Start to discharge, inductanceL S1Start reverse charging, inductanceL 2Electric current a part passes through capacitorC 2, diode D3Flow back to direct current SourceECathode, another part pass through capacitorC 1, diode D2To capacitorC 1aCharging, using inductanceL S1Flow back to switching tube S1, capacitorC 1Electric discharge, voltageu C1+u C2First rise and declines afterwards, electric currenti LS1First rise and fall after rise afterwards, until capacitorC 1Discharge offu C1=0, at this time InductanceL 2Start to inductanceL S1Charging, capacitorC 2Voltageu C2<u C1a, capacitorC 2It will continue to charge, whenu C2It rises tou C1aWhen,i LS1 No longer decline, capacitorC 2Continue to charge, voltageu C2>u C1a, electric currenti LS1Start to rise again, until capacitorC 2Charging finishes, this Wheni LS1=-i L2, capacitorC 2It does not recharge, inductanceL 2Electric current a part begins through inductanceL S2To capacitorC 2bCharging, using electricity HoldC 1bFlow to inductanceL S1, flow back to switching tube S1, inductanceL 2Electric current another part passes through diode D5、D2To capacitorC 1aCharging, directly It arrivesi LS2It rises toi L2.This process inductanceL S2, capacitorC 1aWithC 2bCharging, capacitorC 1bElectric discharge, whenu C2b=u C1a+u C1bWhen, diode D8Conducting, inductanceL 2Electric current a part passes through inductanceL S2Flow through diode D8, capacitorC 1a, give inductanceL S1Charging, then flow back to switch Pipe S1, inductanceL 2Electric current another part begins through inductanceL S2To capacitorC 2bCharging is using capacitorC 1bFlow to inductanceL S1, flow back to Switching tube S1。
Mode 4: controller control switch pipe S1Conducting, switching tube S2Conducting.InductanceL 1、L 2Charging.Switching tube S2Wink is connected Between, due to inductanceL S2Electric current cannot be mutated, inductanceL S2It can be from former Lu Fang electricity, inductanceL S1Electric current, inductanceL S2Electric current is dropped rapidly to 0.Switching tube S at this time2Realize zero current turning-on.InductanceL S1, inductanceL S2Pass through inductanceL S2, capacitorC 2b, capacitorC 1b, inductanceL S1, switching tube S1The branch and inductance of compositionL S2, diode D8, capacitorC 1a, inductanceL S1, switching tube S1The branch of composition is put Electricity；Capacitor at this timeC 2Voltage is greater than capacitorC 1bVoltage, capacitorC 2Pass through switching tube S2, switching tube S1, inductanceL S1, capacitorC 1aWith two Pole pipe D4To inductanceL S1It charges, at this time capacitorC 2, capacitorC 1b, diode D4And inductanceL S1A resonant element is formed until inductanceL S1Electric current falls to 0, at this time capacitorC 2Voltage is less than capacitorC 1bVoltage.
The high-gain DC/DC converter based on voltage gain unit is emulated in a kind of embodiment, simulation parameter: All switching tube frequenciesf=50kHz, switching tube S1、S2Duty ratioD=0.7, DC power supplyEVoltageu in =30V, output voltageu 0 = 400V, rated powerP 0 =1600W.Fig. 3 show switching tube S1Driving signal US1GSWith switching tube S2Driving signal US2GS Voltage waveform.Fig. 4-6 show switching tube S1、S2Voltage, current waveform, whereini S1For switching tube S1Drain current,i S2For switching tube S2Drain current,u S1For switching tube S1Drain voltage,u S2For switching tube S2Drain voltage, can see Out, switching tube S1、S2Realize zero voltage turn-off and zero current passing.Fig. 7 show inductanceL 1Electric currenti L1, inductanceL 2's Electric currenti L2, inductanceL S1Electric currenti LS1, inductanceL S2Electric currenti LS2Waveform.Fig. 8 show capacitorC 1、C 2、C 1a、C 1b、C 2a、C 2b Voltage waveform.

Claims (2)

  1. The DC/DC converter 1. a kind of crisscross parallel ZVZCS high boosts, which is characterized in that including inductanceL 1, inductanceL 2, switching tube S1, switching tube S2, passive snubber circuit, first voltage multiplication units, second voltage multiplication units, passive snubber circuit include two Pole pipe D1, diode D2, diode D3, diode D4, diode D5, diode D6, capacitorC 1, capacitorC 2, inductanceL S1, inductanceL S2, first voltage multiplication units include diode D7, diode D8, capacitorC 1a, capacitorC 1b, second voltage multiplication units include two Pole pipe D9, diode D10, capacitorC 2a, capacitorC 2b；
    InductanceL 1One end and DC power supplyEAnode connection, the other end respectively with switching tube S1Drain electrode, diode D1Anode connection；
    InductanceL 2One end and DC power supplyEAnode connection, the other end respectively with switching tube S2Drain electrode, diode D6Cathode connection；
    Switching tube S1Source electrode respectively with switching tube S2Source electrode, diode D3Cathode, diode D7Cathode, DC power supplyECathode connect It connects；
    Diode D2Anode respectively with diode D1Cathode, diode D5Cathode, capacitorC 1One end connection, capacitorC 1The other end Respectively with diode D5Anode, diode D6Cathode, capacitorC 2One end connection, capacitorC 2The other end respectively with diode D3Sun Pole, diode D4Cathode, diode D6Anode connection；
    CapacitorC 1aOne end respectively with diode D2Cathode, diode D8Cathode, diode D10Anode connection；
    CapacitorC 1aThe other end respectively with inductanceL S1One end, capacitorC 1bOne end connection, inductanceL S1The other end and switching tube S1 Drain electrode connection, capacitorC 1bThe other end respectively with diode D4Anode, diode D7Anode, diode D9Cathode connection；
    CapacitorC 2aOne end and diode D10Cathode connection, capacitorC 2aThe other end respectively with inductanceL S2One end, capacitorC 2b's One end connection, inductanceL S2The other end and switching tube S2Drain electrode connection, capacitorC 2bThe other end and diode D9Anode connection.
  2. The DC/DC converter 2. crisscross parallel ZVZCS high according to claim 1 boosts, which is characterized in that switch tube S1 With switching tube S2Using Interleaved control strategy, switching tube S1With switching tube S2180 ° of driving signal phase phase difference.
CN201910351270.XA 2019-04-28 2019-04-28 Staggered parallel ZVZCS high-boost DC/DC converter Active CN110034681B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110601531A (en) * 2019-10-31 2019-12-20 广东美的制冷设备有限公司 Power supply control circuit and vehicle-mounted air conditioner
WO2021027468A1 (en) * 2019-08-15 2021-02-18 华为技术有限公司 Dc-dc converter circuit
CN115603578A (en) * 2022-12-14 2023-01-13 深圳市恒运昌真空技术有限公司（Cn） Converter based on soft switch and control method thereof

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CN1581653A (en) * 2003-08-11 2005-02-16 康舒科技股份有限公司 Zero-current switching power factor corrector with energy recovery
CN106712504A (en) * 2016-12-29 2017-05-24 三峡大学 Non-isolated high-gain DC/DC convertor with soft switch
CN106787724A (en) * 2016-12-29 2017-05-31 三峡大学 One kind switch zero voltage turn-off dual input high-gain DC/DC converters

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1581653A (en) * 2003-08-11 2005-02-16 康舒科技股份有限公司 Zero-current switching power factor corrector with energy recovery
CN106712504A (en) * 2016-12-29 2017-05-24 三峡大学 Non-isolated high-gain DC/DC convertor with soft switch
CN106787724A (en) * 2016-12-29 2017-05-31 三峡大学 One kind switch zero voltage turn-off dual input high-gain DC/DC converters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021027468A1 (en) * 2019-08-15 2021-02-18 华为技术有限公司 Dc-dc converter circuit
US11894762B2 (en) 2019-08-15 2024-02-06 Huawei Digital Power Technologies Co., Ltd. Direct current-direct current conversion circuit
CN110601531A (en) * 2019-10-31 2019-12-20 广东美的制冷设备有限公司 Power supply control circuit and vehicle-mounted air conditioner
CN110601531B (en) * 2019-10-31 2022-06-28 广东美的制冷设备有限公司 Power supply control circuit and vehicle-mounted air conditioner
CN115603578A (en) * 2022-12-14 2023-01-13 深圳市恒运昌真空技术有限公司（Cn） Converter based on soft switch and control method thereof

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Application publication date: 20190719

Assignee: Yichang Yizhixing Technology Co.,Ltd.

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Contract record no.: X2023980034895

Denomination of invention: A interleaved parallel ZVZCS high boost DC/DC converter

Granted publication date: 20210126

License type: Common License

Record date: 20230426

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20190719

Assignee: NANJING YANXU ELECTRICAL TECHNOLOGY Co.,Ltd.

Assignor: CHINA THREE GORGES University

Contract record no.: X2023980039976

Denomination of invention: A interleaved parallel ZVZCS high boost DC/DC converter

Granted publication date: 20210126

License type: Common License

Record date: 20230823