JP2018046674A - スイッチング電源装置 - Google Patents
スイッチング電源装置 Download PDFInfo
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- JP2018046674A JP2018046674A JP2016180130A JP2016180130A JP2018046674A JP 2018046674 A JP2018046674 A JP 2018046674A JP 2016180130 A JP2016180130 A JP 2016180130A JP 2016180130 A JP2016180130 A JP 2016180130A JP 2018046674 A JP2018046674 A JP 2018046674A
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—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
- H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1257—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to short circuit or wrong polarity in output circuit
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
-
- 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
Abstract
Description
直流入力電源にトランスの一次巻線を介して接続された主スイッチング素子と、
前記トランスの二次巻線に同期整流用の副スイッチング素子を介して接続され、前記主スイッチング素子のオン・オフに伴って前記トランスの二次巻線に誘起された電圧から直流出力電圧を生成する出力回路と、
前記主スイッチング素子がオフのときに前記副スイッチング素子に加わる電圧値に応じて該副スイッチング素子をオン・オフ制御する同期整流制御回路と
を備えた同期整流型のスイッチング電源装置に係る。
前記副スイッチング素子に加わる電圧値が閾値電圧を超えたときに電圧検出信号を出力する電圧検出回路と、
この電圧検出信号に応じて前記副スイッチング素子をオン・オフ駆動するスイッチ駆動回路と、
前記副スイッチング素子に加わる電圧から補助電源電圧を生成する補助電源回路と、
前記出力回路が生成した直流出力電圧値の低下を検出して電圧低下検出信号を出力する電圧低下検出回路と、
この電圧低下検出信号が出力されたとき、前記電圧検出回路および前記スイッチ駆動回路の駆動電源を前記直流出力電圧から前記補助電源電圧に切り替える電源切替回路とを備えた構成にしたことを特徴としている。
2 直流入力電源
3 トランス
3a 一次巻線
3b 二次巻線
3c 補助巻線
4 主スイッチング素子(パワーMOS-FET)
5 副スイッチング素子(MOS-FET)
6 出力回路
7 電源制御IC
8 整流平滑回路
9 同期整流制御回路
9a VD検出回路(電圧検出回路)
9b スイッチ駆動回路
9c 電圧低下検出回路
9d 電流供給回路(補助電源回路)
9e 電源切替回路
11 比較器
12 電流スイッチ(MOS-FET)
13,14電源スイッチ(MOS-FET)
15 反転回路
Claims (7)
- 直流入力電源にトランスの一次巻線を介して接続された主スイッチング素子と、
前記トランスの二次巻線の副スイッチング素子を介して接続され、前記主スイッチング素子のオン・オフに伴って前記トランスの二次巻線に誘起された電圧から直流出力電圧を生成する出力回路と、
前記主スイッチング素子がオフのときに前記副スイッチング素子に加わる電圧値に応じて該副スイッチング素子をオン・オフ制御する同期整流制御回路とを備え、
前記同期整流制御回路は、
前記副スイッチング素子に加わる電圧値が閾値電圧を超えたときに電圧検出信号を出力する電圧検出回路と、
この電圧検出信号に応じて前記副スイッチング素子をオン・オフ駆動するスイッチ駆動回路と、
前記副スイッチング素子に加わる電圧から補助電源電圧を生成する補助電源回路と、
前記出力回路が生成した直流出力電圧値の低下を検出して電圧低下検出信号を出力する電圧低下検出回路と、
この電圧低下検出信号が出力されたとき、前記電圧検出回路および前記スイッチ駆動回路の駆動電源を前記直流出力電圧から前記補助電源電圧に切り替える電源切替回路と
を具備したことを特徴とするスイッチング電源装置。 - 前記補助電源回路は蓄電装置を有し、
前記副スイッチング素子に加わる電圧値が所定の基準電圧値を超えたとき、該副スイッチング素子に加わる電圧にて前記蓄電装置を充電して補助電源電圧を生成する電流供給回路からなること
を特徴とする請求項1に記載のスイッチング電源装置。 - 前記電源切替回路は、前記電圧低下検出信号を受けて前記直流出力電圧または前記補助電源電圧のいずれかを出力する電源切替スイッチを備えたことを特徴とする請求項1に記載のスイッチング電源装置。
- 前記副スイッチング素子は、ソースを接地したMOS-FETからなり、
前記同期整流制御回路は、前記MOS-FETのソース・ドレイン間電圧を検出して前記MOS-FETのオン・オフを制御することを特徴とする請求項1に記載のスイッチング電源装置。 - 前記同期整流制御回路は、前記MOS-FETのソース・ドレイン間電圧値が第1の電圧閾値を上回ったときに前記MOS-FETをオンにし、前記MOS-FETのソース・ドレイン間電圧値が第2の電圧閾値を下回ったときに前記MOS-FETをオフにして前記トランスの二次巻線に誘起された電圧を整流することを特徴とする請求項4に記載のスイッチング電源装置。
- 前記第1の電圧閾値は、前記MOS-FETにドレイン電流が流れ始めたことを検出する閾値であって、
前記第2の電圧閾値は、前記MOS-FETに流れるドレイン電流が零(0)となったことを検出する閾値であることを特徴とする請求項5に記載のスイッチング電源装置。 - 前記直流入力電源は、商用交流電源を整流・平滑化して前記トランスの一次巻線に加える直流入力電圧を生成するものであって、
前記主スイッチング素子は、オン時に前記直流入力電源から供給される電力エネルギーを前記トランスの一次巻線に蓄えた後、オフ時に前記トランスの一次巻線に蓄えた電力エネルギーを放出して該トランスの二次巻線に電圧を誘起することを特徴とする請求項1に記載のスイッチング電源装置。
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JP2016180130A JP6747203B2 (ja) | 2016-09-15 | 2016-09-15 | スイッチング電源装置 |
US15/666,119 US10008949B2 (en) | 2016-09-15 | 2017-08-01 | Switching power supply with an auxiliary supply voltage |
CN201710659793.1A CN107834855B (zh) | 2016-09-15 | 2017-08-04 | 开关电源装置 |
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JP2021072713A (ja) * | 2019-10-31 | 2021-05-06 | コーセル株式会社 | スイッチング電源装置 |
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US10523110B2 (en) * | 2017-09-28 | 2019-12-31 | Semiconductor Components Industries, Llc | Synchronous rectifier controller for offline power converter and method therefor |
CN110492442B (zh) * | 2019-07-25 | 2021-07-30 | 杭州洲钜电子科技有限公司 | 一种acdc开关电源保护电路及保护方法 |
CN112217399A (zh) * | 2020-10-30 | 2021-01-12 | 杰华特微电子(杭州)有限公司 | 开关型调节驱动器及其调节驱动方法 |
CN113655363A (zh) * | 2021-09-13 | 2021-11-16 | 东科半导体(安徽)股份有限公司 | 一种开关电源主开关管导通压降在线测试电路 |
CN114537169A (zh) * | 2022-03-28 | 2022-05-27 | 华人运通(山东)科技有限公司 | 大功率无线充电机及其车载端供电电路和控制方法 |
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JP3675389B2 (ja) * | 2001-03-26 | 2005-07-27 | 株式会社村田製作所 | スイッチング電源装置およびそれを用いた電子装置 |
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JP5768657B2 (ja) * | 2011-10-26 | 2015-08-26 | 富士電機株式会社 | 直流−直流変換装置 |
CN103580484B (zh) * | 2012-07-30 | 2015-10-21 | 台达电子工业股份有限公司 | 同步整流装置及其控制方法 |
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JP6745585B2 (ja) * | 2015-03-02 | 2020-08-26 | 富士電機株式会社 | スイッチング電源装置 |
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CN105450029B (zh) * | 2015-12-31 | 2018-03-30 | 广州金升阳科技有限公司 | 开关电源的反馈控制方法及电路 |
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US20140204624A1 (en) * | 2013-01-22 | 2014-07-24 | Power Integrations, Inc. | Power converter controller with multiple power sources |
JP2016123185A (ja) * | 2014-12-24 | 2016-07-07 | ローム株式会社 | 絶縁同期整流型dc/dcコンバータ、同期整流コントローラ、それを用いた電源装置、電源アダプタおよび電子機器、同期整流コントローラの制御方法 |
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JP2021072713A (ja) * | 2019-10-31 | 2021-05-06 | コーセル株式会社 | スイッチング電源装置 |
JP7177763B2 (ja) | 2019-10-31 | 2022-11-24 | コーセル株式会社 | スイッチング電源装置 |
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US10008949B2 (en) | 2018-06-26 |
CN107834855B (zh) | 2020-08-04 |
US20180076724A1 (en) | 2018-03-15 |
JP6747203B2 (ja) | 2020-08-26 |
CN107834855A (zh) | 2018-03-23 |
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