JP4573697B2 - スイッチングレギュレータ及びこれを備えた電子機器 - Google Patents
スイッチングレギュレータ及びこれを備えた電子機器 Download PDFInfo
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- JP4573697B2 JP4573697B2 JP2005135526A JP2005135526A JP4573697B2 JP 4573697 B2 JP4573697 B2 JP 4573697B2 JP 2005135526 A JP2005135526 A JP 2005135526A JP 2005135526 A JP2005135526 A JP 2005135526A JP 4573697 B2 JP4573697 B2 JP 4573697B2
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- 238000004146 energy storage Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 10
- 238000009499 grossing Methods 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
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Classifications
-
- 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
- H02M3/1588—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 comprising at least one synchronous rectifier element
-
- 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
-
- 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
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- 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
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Description
20 DC/DCコンバータ(スイッチングレギュレータ)
30 TFT液晶パネル
21 スイッチング電源IC
211 スイッチ駆動回路
212 出力帰還回路
CTRL スイッチング制御部
N1 Nチャネル電界効果トランジスタ(出力トランジスタ)
P1 Pチャネル電界効果トランジスタ(同期整流トランジスタ)
P2 Pチャネル電界効果トランジスタ(逆流検出トランジスタ)
INV1〜INV2 インバータ
FF Dフリップフロップ
OR 論理和回路
ERR 誤差増幅器
E1 直流電圧源
OSC 発振器
CMP コンパレータ
T1〜T3 外部端子
Lex インダクタ(外付け)
Cex 平滑コンデンサ(外付け)
Rex1〜Rex2 抵抗(外付け)
Claims (4)
- 出力トランジスタ及び同期整流トランジスタの相補的なスイッチング制御によってエネルギ貯蔵素子の一端を駆動することで、入力電圧から所望の出力電圧を生成するスイッチングレギュレータであって、前記同期整流トランジスタの両端電圧がゲート・ソース間に印加される逆流検出トランジスタと;前記同期整流トランジスタのオン期間中に前記逆流検出トランジスタが逆方向電流の検出を示す開閉状態となったとき、そのオン期間の満了を待つことなく前記同期整流トランジスタをオフさせる手段と;を有して成ることを特徴とするスイッチングレギュレータ。
- インダクタを介して入力電圧が印加される入力端子と;負荷への出力電圧が引き出される出力端子と;ドレインが前記入力端子に接続され、ソースが接地端に接続されたNチャネル電界効果型の出力トランジスタと;ドレインが前記入力端子に接続され、ソースが前記出力端子に接続されたPチャネル電界効果型の同期整流トランジスタと;前記出力電圧に応じて変動する帰還電圧と所定の目標設定電圧との差分を増幅して誤差電圧を生成する誤差増幅器と;ランプ波形或いは三角波形のスロープ電圧を生成する発振器と;前記誤差電圧と前記スロープ電圧を比較してPWM信号を生成するPWMコンパレータと;データ入力端が電源ラインに接続されたDフリップフロップと;ゲートが前記入力端子に接続され、ソースが前記出力端子に接続され、ドレインが前記Dフリップフロップのクロック入力端に接続されたPチャネル電界効果型の逆流検出トランジスタと;前記Dフリップフロップのクロック入力端と接地端との間に接続された抵抗と;入力端が前記PWMコンパレータの出力端に接続され、出力端が前記Dフリップフロップのリセット入力端に接続された第1インバータと;入力端が第1インバータの出力端に接続され、出力端が前記出力トランジスタのゲートに接続された第2インバータと;一入力端が前記Dフリップフロップの出力端に接続され、他入力端が第2インバータの出力端に接続され、出力端が前記同期整流トランジスタのゲートに接続された論理和回路と;を有して成ることを特徴とする昇圧型のスイッチングレギュレータ。
- 前記逆流検出トランジスタは、前記同期整流トランジスタに隣接して集積配置されていることを特徴とする請求項1または請求項2に記載のスイッチングレギュレータ。
- 装置電源であるバッテリと、前記バッテリの出力変換手段と、を有して成る電子機器であって、前記出力変換手段として、請求項1〜請求項3のいずれかに記載のスイッチングレギュレータを備えて成ることを特徴とする電子機器。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005135526A JP4573697B2 (ja) | 2005-05-09 | 2005-05-09 | スイッチングレギュレータ及びこれを備えた電子機器 |
US11/911,238 US7759911B2 (en) | 2005-05-09 | 2006-04-18 | Switching regulator with reverse current detecting transistor |
PCT/JP2006/308105 WO2006120842A1 (ja) | 2005-05-09 | 2006-04-18 | スイッチングレギュレータ及びこれを備えた電子機器 |
KR1020077020384A KR20080010387A (ko) | 2005-05-09 | 2006-04-18 | 스위칭 레귤레이터 및 이것을 구비한 전자 기기 |
CNA2006800088961A CN101142736A (zh) | 2005-05-09 | 2006-04-18 | 开关稳压器和具有该稳压器的电子设备 |
TW095116454A TW200701614A (en) | 2005-05-09 | 2006-05-09 | Switching regulator and electronic device having the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005135526A JP4573697B2 (ja) | 2005-05-09 | 2005-05-09 | スイッチングレギュレータ及びこれを備えた電子機器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006314160A JP2006314160A (ja) | 2006-11-16 |
JP4573697B2 true JP4573697B2 (ja) | 2010-11-04 |
Family
ID=37396355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005135526A Active JP4573697B2 (ja) | 2005-05-09 | 2005-05-09 | スイッチングレギュレータ及びこれを備えた電子機器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7759911B2 (ja) |
JP (1) | JP4573697B2 (ja) |
KR (1) | KR20080010387A (ja) |
CN (1) | CN101142736A (ja) |
TW (1) | TW200701614A (ja) |
WO (1) | WO2006120842A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4657789B2 (ja) * | 2005-04-21 | 2011-03-23 | ローム株式会社 | 昇圧型スイッチング電源装置及びこれを備えた電子機器 |
JP4968904B2 (ja) * | 2006-12-08 | 2012-07-04 | ルネサスエレクトロニクス株式会社 | 表示パネル駆動装置、表示パネル駆動方法および表示装置 |
JP2008178263A (ja) * | 2007-01-22 | 2008-07-31 | Ricoh Co Ltd | 昇降圧型スイッチングレギュレータ及び昇降圧型スイッチングレギュレータの逆電流防止方法 |
JP5167733B2 (ja) * | 2007-09-06 | 2013-03-21 | 株式会社リコー | 昇圧型dc/dcコンバータ |
JP5513735B2 (ja) * | 2008-12-01 | 2014-06-04 | ローム株式会社 | 昇圧型スイッチング電源装置 |
JP5507216B2 (ja) * | 2009-11-20 | 2014-05-28 | ルネサスエレクトロニクス株式会社 | 半導体装置および電源装置 |
JP5667761B2 (ja) * | 2009-12-28 | 2015-02-12 | 株式会社東芝 | スイッチング電源 |
US20110187189A1 (en) * | 2010-02-02 | 2011-08-04 | Intersil Americas Inc. | System and method for controlling single inductor dual output dc/dc converters |
DE102010013353A1 (de) * | 2010-03-30 | 2011-10-06 | Texas Instruments Deutschland Gmbh | Schaltwandler-Steuerschaltung |
US8754616B2 (en) * | 2011-02-11 | 2014-06-17 | Fairchild Semiconductor Corporation | Boost converter with multi-mode synchronous rectifier |
JP5616266B2 (ja) * | 2011-03-28 | 2014-10-29 | 旭化成エレクトロニクス株式会社 | スイッチング電源回路 |
TW201246769A (en) * | 2011-05-10 | 2012-11-16 | Hon Hai Prec Ind Co Ltd | Buck converter |
WO2013179571A1 (ja) * | 2012-06-01 | 2013-12-05 | 旭化成エレクトロニクス株式会社 | Dc-dcコンバータ |
US9069370B2 (en) * | 2012-06-29 | 2015-06-30 | Taiwan Semiconductor Manufacturing Company, Ltd. | Digital low drop-out regulator |
KR20140022674A (ko) * | 2012-08-14 | 2014-02-25 | 페어차일드코리아반도체 주식회사 | 스위치 제어 회로, 이를 포함하는 컨버터 및 그 구동 방법 |
JP2016126359A (ja) * | 2014-12-26 | 2016-07-11 | 日立オートモティブシステムズ株式会社 | 電子装置 |
US9893621B1 (en) * | 2016-10-26 | 2018-02-13 | Silanna Asia Pte Ltd | Power converter with predictive pulse width modulator control |
CN111182676B (zh) * | 2018-11-08 | 2021-07-09 | 台达电子企业管理(上海)有限公司 | 调光电路及调光控制方法 |
DE102019107761A1 (de) * | 2019-03-26 | 2020-10-01 | Endress+Hauser Conducta Gmbh+Co. Kg | Schaltreglerschaltung, Feldgerät und Verfahren zur Stromversorgung |
US11043903B2 (en) * | 2019-03-28 | 2021-06-22 | Tdk Corporation | Power supply and medical system |
US11803203B2 (en) * | 2021-09-13 | 2023-10-31 | Silicon Laboratories Inc. | Current sensor with multiple channel low dropout regulator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1189222A (ja) * | 1997-09-03 | 1999-03-30 | Hitachi Ltd | 電圧変換回路 |
JPH11235022A (ja) * | 1998-02-10 | 1999-08-27 | Sharp Corp | 同期整流回路 |
JP2000166279A (ja) * | 1998-12-01 | 2000-06-16 | Mitsubishi Electric Corp | 電流検出回路 |
JP2002281743A (ja) * | 2001-03-19 | 2002-09-27 | Hitachi Ltd | 半導体集積回路および携帯用電子機器 |
Family Cites Families (9)
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JPH1114663A (ja) | 1997-06-27 | 1999-01-22 | Mitsubishi Electric Corp | 物理量センサ |
JPH1169804A (ja) * | 1997-08-19 | 1999-03-09 | Fujitsu Ltd | Dc/dcコンバータ |
JP2000092824A (ja) * | 1998-09-10 | 2000-03-31 | Matsushita Electric Ind Co Ltd | スイッチングレギュレータおよびlsiシステム |
JP2001095241A (ja) * | 1999-09-20 | 2001-04-06 | Nec Miyagi Ltd | 電源の同期整流回路 |
JP3699011B2 (ja) * | 2001-05-28 | 2005-09-28 | Necマイクロシステム株式会社 | スイッチングレギュレータ |
US6798177B1 (en) * | 2002-10-15 | 2004-09-28 | Arques Technology, Inc. | Boost-buck cascade converter for pulsating loads |
JP3953443B2 (ja) | 2003-07-08 | 2007-08-08 | ローム株式会社 | 昇降圧dc−dcコンバータ及びこれを用いたポータブル機器 |
JP4798561B2 (ja) * | 2006-06-05 | 2011-10-19 | トレックス・セミコンダクター株式会社 | スイッチング電源回路 |
US20080303493A1 (en) * | 2007-06-11 | 2008-12-11 | Pacifictech Microelectronics, Inc. | Boost regulator startup circuits and methods |
-
2005
- 2005-05-09 JP JP2005135526A patent/JP4573697B2/ja active Active
-
2006
- 2006-04-18 KR KR1020077020384A patent/KR20080010387A/ko not_active Application Discontinuation
- 2006-04-18 US US11/911,238 patent/US7759911B2/en active Active
- 2006-04-18 CN CNA2006800088961A patent/CN101142736A/zh active Pending
- 2006-04-18 WO PCT/JP2006/308105 patent/WO2006120842A1/ja active Application Filing
- 2006-05-09 TW TW095116454A patent/TW200701614A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1189222A (ja) * | 1997-09-03 | 1999-03-30 | Hitachi Ltd | 電圧変換回路 |
JPH11235022A (ja) * | 1998-02-10 | 1999-08-27 | Sharp Corp | 同期整流回路 |
JP2000166279A (ja) * | 1998-12-01 | 2000-06-16 | Mitsubishi Electric Corp | 電流検出回路 |
JP2002281743A (ja) * | 2001-03-19 | 2002-09-27 | Hitachi Ltd | 半導体集積回路および携帯用電子機器 |
Also Published As
Publication number | Publication date |
---|---|
JP2006314160A (ja) | 2006-11-16 |
CN101142736A (zh) | 2008-03-12 |
US20090091308A1 (en) | 2009-04-09 |
KR20080010387A (ko) | 2008-01-30 |
US7759911B2 (en) | 2010-07-20 |
TW200701614A (en) | 2007-01-01 |
WO2006120842A1 (ja) | 2006-11-16 |
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