JP2007288942A - 降圧コンバータ - Google Patents
降圧コンバータ Download PDFInfo
- Publication number
- JP2007288942A JP2007288942A JP2006114622A JP2006114622A JP2007288942A JP 2007288942 A JP2007288942 A JP 2007288942A JP 2006114622 A JP2006114622 A JP 2006114622A JP 2006114622 A JP2006114622 A JP 2006114622A JP 2007288942 A JP2007288942 A JP 2007288942A
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- Prior art keywords
- current
- inductor
- output
- switch
- down converter
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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
- H02M1/40—Means for preventing magnetic saturation
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
【解決手段】降圧コンバータは、入力端子からの入力電圧が供給されるスイッチ(2)と、スイッチ(2)に接続されたインダクタ(4)と、スイッチ(2)が開いているとき、インダクタ(4)に電流を流す整流手段(3)と、インダクタ(4)の電流を平滑して出力端子への出力電圧を生成する平滑手段(5)を有する。インダクタ(4)に流れ込む電流が所定の値を超えると、入力端子から出力端子へインダクタ(4)を介さずに電流を流すパスを構成する電流バイパス回路(7)を備えている。
【選択図】図1
Description
以下、本発明の第1の実施形態に係る降圧コンバータについて説明する。
以下に、本発明の第2の実施形態に係る降圧コンバータについて説明する。
2、2a スイッチ
3 ダイオード(整流手段)
4 インダクタ
5 出力コンデンサ(平滑手段)
6、6a 制御回路
7 電流バイパス回路
11 トランジスタ
12 電流検出器
13 電流制御回路
14 比較器
15 電圧源
16 PWM回路
17 比較器
18 電圧源
19 OR回路
Claims (3)
- 入力端子からの入力電圧が供給されるスイッチと、
前記スイッチに接続されたインダクタと、
前記スイッチが開いているとき、前記インダクタに電流を流す整流手段と、
前記インダクタの電流を平滑して出力端子への出力電圧を生成する平滑手段を有する降圧コンバータであって、
前記インダクタに流れ込む電流が所定の値を超えると、前記入力端子から前記出力端子へ前記インダクタを介さずに電流を流すパスを構成する電流バイパス回路を備えていることを特徴とする降圧コンバータ。 - 前記電流バイパス回路は、
一端が前記スイッチと前記入力端子との間に接続されていると共に、他端が前記インダクタと前記出力端子との間に接続されており、制御信号によって動作電流が制御されるトランジスタと、
前記スイッチ又は前記インダクタに流れ込む電流を検出して電流検出信号を出力する電流検出回路と、
前記電流検出信号の信号レベルが所定のレベルに到達すると、前記トランジスタの動作電流を増大させる前記制御信号を出力する制御回路とを備えていることを特徴とする請求項1に記載の降圧コンバータ。 - 前記トランジスタは、PMOSトランジスタであることを特徴とする請求項2に記載の降圧コンバータ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006114622A JP4783195B2 (ja) | 2006-04-18 | 2006-04-18 | 降圧コンバータ |
US11/783,645 US7782030B2 (en) | 2006-04-18 | 2007-04-11 | Step-down converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006114622A JP4783195B2 (ja) | 2006-04-18 | 2006-04-18 | 降圧コンバータ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007288942A true JP2007288942A (ja) | 2007-11-01 |
JP4783195B2 JP4783195B2 (ja) | 2011-09-28 |
Family
ID=38604227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006114622A Expired - Fee Related JP4783195B2 (ja) | 2006-04-18 | 2006-04-18 | 降圧コンバータ |
Country Status (2)
Country | Link |
---|---|
US (1) | US7782030B2 (ja) |
JP (1) | JP4783195B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010136510A (ja) * | 2008-12-03 | 2010-06-17 | Panasonic Corp | 降圧型スイッチングレギュレータ |
JP2015033200A (ja) * | 2013-08-01 | 2015-02-16 | ローム株式会社 | スイッチング電源制御回路 |
KR101548423B1 (ko) * | 2013-10-04 | 2015-08-28 | 단국대학교 산학협력단 | 디시-디시 벅 컨버터 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502005008245D1 (de) * | 2004-08-26 | 2009-11-12 | Abb Schweiz Ag | Vorrichtung zur speisung von hilfsbetriebeeinrichtungen für ein kraftstoffelektrisch angetriebenes fahrzeug |
JP2007074794A (ja) * | 2005-09-06 | 2007-03-22 | Rohm Co Ltd | 過電流保護回路、負荷駆動装置、モータ駆動装置、電気機器、電源装置 |
JP2008295158A (ja) * | 2007-05-23 | 2008-12-04 | Panasonic Corp | 電源装置 |
CN101900614B (zh) * | 2009-05-25 | 2013-10-02 | 汉王科技股份有限公司 | 电磁板压感的测量方法和装置 |
US8994347B2 (en) * | 2012-06-04 | 2015-03-31 | R2 Semiconductor, Inc. | Assisting a load current of a switching voltage regulator |
KR101533878B1 (ko) * | 2013-05-24 | 2015-07-06 | 정덕영 | Dc-dc 스위칭 변환기에 있어서 인덕터의 포화방지기능을 가지는 바이패스 시스템 |
JP6181983B2 (ja) * | 2013-06-05 | 2017-08-16 | サイプレス セミコンダクター コーポレーション | スイッチングレギュレータ |
US9490629B1 (en) * | 2013-09-18 | 2016-11-08 | Volterra Semiconductor LLC | DC-to-DC converter controllers including over-current protection, and associated systems and methods |
JP6152241B2 (ja) * | 2014-04-23 | 2017-06-21 | レノボ・シンガポール・プライベート・リミテッド | 電力システム、携帯式電子機器および電力の供給方法 |
US10158224B1 (en) * | 2018-01-19 | 2018-12-18 | Northrop Grumman Systems Corporation | Minimizing voltage drop due to current surge at input to a voltage regulator upon turn-on of the voltage regulator |
US11482889B2 (en) * | 2019-01-09 | 2022-10-25 | Integrated Device Technology, Inc. | Wireless power receiver configurable for LDO or buck operation |
Citations (6)
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JP2005160284A (ja) * | 2003-05-13 | 2005-06-16 | Sumitomo Electric Ind Ltd | 電力変換装置及び電気自動車の駆動システム |
JP2005252635A (ja) * | 2004-03-04 | 2005-09-15 | Alps Electric Co Ltd | 送受信装置 |
JP2005269829A (ja) * | 2004-03-19 | 2005-09-29 | Denso Corp | 電源装置 |
US20050242792A1 (en) * | 2004-04-30 | 2005-11-03 | Raymond Zinn | High efficiency linear regulator |
JP2006060939A (ja) * | 2004-08-20 | 2006-03-02 | Handotai Rikougaku Kenkyu Center:Kk | 出力可変型電源回路 |
JP2007529185A (ja) * | 2003-08-05 | 2007-10-18 | 松下電器産業株式会社 | 直流電源装置、及びそれを搭載する電池式電子機器 |
Family Cites Families (9)
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JPS6374077U (ja) | 1986-10-31 | 1988-05-17 | ||
US5734256A (en) * | 1995-05-31 | 1998-03-31 | General Electric Company | Apparatus for protection of power-electronics in series compensating systems |
US5912552A (en) * | 1997-02-12 | 1999-06-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | DC to DC converter with high efficiency for light loads |
US6163712A (en) * | 1998-02-04 | 2000-12-19 | Motorola, Inc. | Inrush current limiter with output voltage detection for control of input current level and activation of current bypass path |
JP2000058344A (ja) | 1998-08-10 | 2000-02-25 | Sony Corp | チョークコイル |
US6229289B1 (en) * | 2000-02-25 | 2001-05-08 | Cadence Design Systems, Inc. | Power converter mode transitioning method and apparatus |
WO2003048874A2 (en) * | 2001-11-30 | 2003-06-12 | Invensys Systems Inc. | 4-20 ma interface circuit |
JP3829765B2 (ja) * | 2002-06-26 | 2006-10-04 | 株式会社デンソー | 電源回路 |
WO2005085969A1 (en) * | 2004-02-05 | 2005-09-15 | Monolithic Power Systems Inc. | A dc/dc voltage regulator with automatic current sensing selectability for linear and switch mode operation utilizing a single voltage reference |
-
2006
- 2006-04-18 JP JP2006114622A patent/JP4783195B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-11 US US11/783,645 patent/US7782030B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005160284A (ja) * | 2003-05-13 | 2005-06-16 | Sumitomo Electric Ind Ltd | 電力変換装置及び電気自動車の駆動システム |
JP2007529185A (ja) * | 2003-08-05 | 2007-10-18 | 松下電器産業株式会社 | 直流電源装置、及びそれを搭載する電池式電子機器 |
JP2005252635A (ja) * | 2004-03-04 | 2005-09-15 | Alps Electric Co Ltd | 送受信装置 |
JP2005269829A (ja) * | 2004-03-19 | 2005-09-29 | Denso Corp | 電源装置 |
US20050242792A1 (en) * | 2004-04-30 | 2005-11-03 | Raymond Zinn | High efficiency linear regulator |
JP2006060939A (ja) * | 2004-08-20 | 2006-03-02 | Handotai Rikougaku Kenkyu Center:Kk | 出力可変型電源回路 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010136510A (ja) * | 2008-12-03 | 2010-06-17 | Panasonic Corp | 降圧型スイッチングレギュレータ |
JP2015033200A (ja) * | 2013-08-01 | 2015-02-16 | ローム株式会社 | スイッチング電源制御回路 |
KR101548423B1 (ko) * | 2013-10-04 | 2015-08-28 | 단국대학교 산학협력단 | 디시-디시 벅 컨버터 |
Also Published As
Publication number | Publication date |
---|---|
US7782030B2 (en) | 2010-08-24 |
JP4783195B2 (ja) | 2011-09-28 |
US20070241725A1 (en) | 2007-10-18 |
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