JP6886107B2 - 電源回路 - Google Patents
電源回路 Download PDFInfo
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- JP6886107B2 JP6886107B2 JP2017076614A JP2017076614A JP6886107B2 JP 6886107 B2 JP6886107 B2 JP 6886107B2 JP 2017076614 A JP2017076614 A JP 2017076614A JP 2017076614 A JP2017076614 A JP 2017076614A JP 6886107 B2 JP6886107 B2 JP 6886107B2
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- Prior art keywords
- transistor
- node
- voltage
- power supply
- circuit
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- 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
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
-
- 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
-
- 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
- H02M1/34—Snubber circuits
- H02M1/348—Passive dissipative snubbers
-
- 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
- H02M3/33538—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 of the forward type
-
- 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
Description
図1は第1の実施形態による電源回路の構成例を示す図であり、図5は第1の実施形態による電源回路の機能構成例を示す図である。本実施形態による電源回路は、フライバック方式の交流(AC)/直流(DC)スイッチング電源回路であり、例えば100Vの交流電圧を5Vの直流電圧に変換する。交流電源101は、図5の交流電源501に対応し、家庭用コンセント等の商用電源であり、例えば100V又は240Vの交流電圧を供給する。交流電圧は、例えば50Hz又は60Hzである。抵抗R45及びインダクタL9の直列接続回路は、交流電源101の第1の端子とダイオードD3のアノードとの間に接続される。インダクタL8は、交流電源101の第2の端子とダイオードD4のアノードとの間に接続される。抵抗R45及びインダクタL8,L9は、図5の交流フィルタ502に対応し、ノイズを除去するフィルタ回路及び高調波成分を除去する波形整形回路に対応する。また、抵抗R45は、大電流が流れると切断されるヒューズ回路でもある。
図4は、第2の実施形態による電源回路の構成例を示す図である。本実施形態による電源回路は、フォワード方式の交流(AC)/直流(DC)スイッチング電源回路である。以下、本実施形態が第1の実施形態と異なる点を説明する。図1のトランス113は、フライバック方式であるので、黒点で示すように、1次巻線L1の巻き始めは下側であり、2次巻線L2及びL3の巻き始めは上側である。これに対し、図4のトランス113は、フォワード方式であるので、黒点で示すように、1次巻線L1及び2次巻線L2の巻き始めは下側であり、2次巻線L3の巻き始めは上側である。
102 1次側制御IC
103 2次側制御IC
104,105 波形整形及び保護回路
106 分圧回路
107,108 スナバ回路
109 フォトカプラ
110 ツェナーダイオード
111,112 トランジスタ
113 トランス
114 出力端子
115 発光ダイオード
116 フォトトランジスタ
117 コア
118 バイアス回路
Claims (8)
- 1次巻線と第1の2次巻線と第2の2次巻線とを含むトランスと、
前記第1の2次巻線に直列に接続される第1のダイオードと、
電圧が供給され、前記1次巻線に接続される第1のノードと、
交流電圧を整流し、前記整流した電圧を前記第1のノードに供給する整流回路と、
前記第1の2次巻線及び前記第1のダイオードの直列接続回路に接続される第2のノードと、
前記第2のノードと基準電位ノードとの間に接続される第1の容量と、
前記第1のノードと前記第2のノードとの間に接続される第1の抵抗と、
前記第2の2次巻線に接続される第2の容量と、
前記1次巻線に接続される第1のトランジスタと、
電源端子が前記第2のノードに接続され、前記第2の容量の電圧に応じて、前記第1のトランジスタを駆動する第1の駆動回路と、
前記第1の駆動回路のイネーブル端子に接続される第3のノードと、
前記第2のノードと前記第3のノードとの間に接続される第2の抵抗と、
前記第3のノードと基準電位ノードとの間に接続される第3の抵抗と、
前記第2の2次巻線に接続される第2のダイオードと、
前記第2のダイオードに並列に接続される第2のトランジスタと、
前記第2のトランジスタを駆動する第2の駆動回路と、
前記第2のトランジスタのスパイク電圧を抑制する第1のスナバ回路とを有し、
前記第2の容量は、出力端子と基準電位ノードとの間に接続されることを特徴とする電源回路。 - さらに、前記第2の容量の電圧に応じた電流を前記第1の駆動回路に供給するフォトカプラを有することを特徴とする請求項1に記載の電源回路。
- さらに、前記整流回路と前記一次巻線との間に接続されるサイリスタと、
前記サイリスタに並列に接続される第4の抵抗とを有することを特徴とする請求項1又は2に記載の電源回路。 - さらに、前記第1のノードと前記第1のトランジスタとの間に接続され、前記第1のトランジスタのスパイク電圧を抑制する第2のスナバ回路を有することを特徴とする請求項1〜3のいずれか1項に記載の電源回路。
- さらに、前記第1のトランジスタがオン状態からオフ状態に遷移する期間に、前記第1のトランジスタを第3の容量に接続するアクティブクランプ回路を有することを特徴とする請求項1〜3のいずれか1項に記載の電源回路。
- 前記第1のトランジスタがオフすると、前記第2の2次巻線は電力を出力することを特徴とする請求項4に記載の電源回路。
- 前記第1のトランジスタがオンすると、前記第2の2次巻線は電力を出力することを特徴とする請求項5に記載の電源回路。
- 前記第1のトランジスタは、電力増幅率が1になる最大発振周波数及び電流増幅率が1になる遮断周波数が10MHz以上であることを特徴とする請求項1〜7のいずれか1項に記載の電源回路。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017076614A JP6886107B2 (ja) | 2017-04-07 | 2017-04-07 | 電源回路 |
PCT/JP2018/008298 WO2018186084A1 (ja) | 2017-04-07 | 2018-03-05 | 電源回路 |
US16/353,272 US20190207530A1 (en) | 2017-04-07 | 2019-03-14 | Power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017076614A JP6886107B2 (ja) | 2017-04-07 | 2017-04-07 | 電源回路 |
Publications (2)
Publication Number | Publication Date |
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JP2018182846A JP2018182846A (ja) | 2018-11-15 |
JP6886107B2 true JP6886107B2 (ja) | 2021-06-16 |
Family
ID=63712098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017076614A Active JP6886107B2 (ja) | 2017-04-07 | 2017-04-07 | 電源回路 |
Country Status (3)
Country | Link |
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US (1) | US20190207530A1 (ja) |
JP (1) | JP6886107B2 (ja) |
WO (1) | WO2018186084A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022171179A (ja) * | 2021-04-30 | 2022-11-11 | キヤノン株式会社 | 電源装置及び画像形成装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE58907853D1 (de) * | 1989-09-29 | 1994-07-14 | Siemens Ag | Schaltungsanordnung für ein Schaltnetzteil. |
JPH04372575A (ja) * | 1991-06-24 | 1992-12-25 | Fuji Electric Co Ltd | スイッチングレギュレ−タ |
JP3451419B2 (ja) * | 1997-07-29 | 2003-09-29 | 富士通アクセス株式会社 | スイッチング電源装置 |
JP2003339164A (ja) * | 2002-05-22 | 2003-11-28 | Hitachi Industrial Equipment Systems Co Ltd | スイッチング電源回路、及びインバータ装置 |
US6771521B1 (en) * | 2003-02-20 | 2004-08-03 | Delta Electronics, Inc. | Active snubber for synchronous rectifier |
JP4093185B2 (ja) * | 2004-01-09 | 2008-06-04 | サンケン電気株式会社 | スイッチング電源装置 |
JP4770446B2 (ja) * | 2005-12-20 | 2011-09-14 | サンケン電気株式会社 | 電源装置の過熱保護回路、および直流電源装置 |
CN101471605B (zh) * | 2007-12-29 | 2011-12-07 | 群康科技(深圳)有限公司 | 电源电路 |
US8125799B2 (en) * | 2009-10-23 | 2012-02-28 | Bcd Semiconductor Manufacturing Limited | Control circuits and methods for switching mode power supplies |
CN103098360A (zh) * | 2011-08-12 | 2013-05-08 | 英特赛尔美国股份有限公司 | 用于电力转换器的箝位电路 |
CN102280995A (zh) * | 2011-08-29 | 2011-12-14 | 上海新进半导体制造有限公司 | 开关电源集成电路 |
KR20140057975A (ko) * | 2012-11-05 | 2014-05-14 | 페어차일드코리아반도체 주식회사 | 보호 회로, 스위치 제어 회로, 및 이들을 포함하는 전력 공급 장치 |
JP2014209522A (ja) * | 2013-04-16 | 2014-11-06 | 富士通株式会社 | 半導体装置及びその製造方法 |
US20150003118A1 (en) * | 2013-06-27 | 2015-01-01 | Fairchild Korea Semiconductor Ltd. | Start-up circuit, switch control circuit having the start-up circuit and power supply device having the switch control circuit |
JP6188487B2 (ja) * | 2013-08-26 | 2017-08-30 | ローム株式会社 | Dc/dcコンバータおよびその動作方法、および電子機器 |
TWI646658B (zh) * | 2014-05-30 | 2019-01-01 | 日商半導體能源研究所股份有限公司 | 半導體裝置 |
-
2017
- 2017-04-07 JP JP2017076614A patent/JP6886107B2/ja active Active
-
2018
- 2018-03-05 WO PCT/JP2018/008298 patent/WO2018186084A1/ja active Application Filing
-
2019
- 2019-03-14 US US16/353,272 patent/US20190207530A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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JP2018182846A (ja) | 2018-11-15 |
US20190207530A1 (en) | 2019-07-04 |
WO2018186084A1 (ja) | 2018-10-11 |
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