JP2005151689A - 同期整流方式スイッチングレギュレータ制御回路及びこれを含む半導体集積回路 - Google Patents
同期整流方式スイッチングレギュレータ制御回路及びこれを含む半導体集積回路 Download PDFInfo
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- JP2005151689A JP2005151689A JP2003385009A JP2003385009A JP2005151689A JP 2005151689 A JP2005151689 A JP 2005151689A JP 2003385009 A JP2003385009 A JP 2003385009A JP 2003385009 A JP2003385009 A JP 2003385009A JP 2005151689 A JP2005151689 A JP 2005151689A
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- circuit
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- synchronous rectification
- switching regulator
- output signal
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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
- H02M3/02—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
- H02M3/22—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
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S323/00—Electricity: power supply or regulation systems
- Y10S323/901—Starting circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
【解決手段】 電源投入時のMINデューティーを制限し、入出力間に接続されているコイルに電流を必ず流し、次のタイミングでコイルにエネルギーが保持されることから、出力の電荷を抜くことなく電源投入が行われるようにした。
【選択図】 図1
Description
(1)ソフトスタート回路を含む回路部と、発振器と、比較回路と、同期整流回路を備え、前記比較回路は前記回路部からの出力信号と前記発振器からの出力信号とを比較してパルス幅が制御された出力パルスを出力し、前記同期整流回路は前記出力パルスを入力してスイッチング素子を駆動するための駆動信号を供給する同期整流方式スイッチングレギュレータ制御回路において、電源投入後であって前記出力パルスが所定のデューティー比に達したときに、前記出力パルスを前記同期整流回路へ出力することにした。また、
(2)前記回路部からの出力信号と基準電圧とを比較する第2の比較回路と、前記第2の比較回路からの出力信号に応じて前記出力パルスを前記同期整流回路へ出力する論理回路とを更に備え、前記回路部からの出力信号の電圧レベルが前記基準電圧よりも低いときは、前記出力パルスが前記同期整流回路へ供給されないようにした。また、
(3)上記(2)とは異なり、前記発振器からの出力信号を、所定の電圧レベルにおいて切り取られた三角波の形状を有するものにした。更に、
(4)上記同期整流方式スイッチングレギュレータ制御回路を含む半導体集積回路とした。
3、104 発振回路
6、105 同期整流回路
5 AND回路
7 NAND回路
100、101 分割抵抗
102 誤差増幅器
107 ソフトスタート回路
108 外付け容量
4、106 基準電圧回路
Claims (6)
- ソフトスタート回路を含む回路部と、発振器と、比較回路と、同期整流回路を備え、前記比較回路は前記回路部からの出力信号と前記発振器からの出力信号とを比較してパルス幅が制御された出力パルスを出力し、前記同期整流回路は前記出力パルスを入力してスイッチング素子を駆動するための駆動信号を供給する同期整流方式スイッチングレギュレータ制御回路において、
電源投入後であって前記出力パルスが所定のデューティー比に達したときに、前記出力パルスを前記同期整流回路へ出力することを特徴とする同期整流方式スイッチングレギュレータ制御回路。 - 前記回路部からの出力信号と基準電圧とを比較する第2の比較回路と、前記第2の比較回路からの出力信号に応じて前記出力パルスを前記同期整流回路へ出力する論理回路とを更に備え、前記回路部からの出力信号の電圧レベルが前記基準電圧よりも低いときは、前記出力パルスが前記同期整流回路へ供給されないことを特徴とする請求項1に記載の同期整流方式スイッチングレギュレータ制御回路。
- 前記発振器からの出力信号は、所定の電圧レベルにおいて切り取られた三角波の形状を有することを特徴とする請求項1に記載の同期整流方式スイッチングレギュレータ制御回路。
- 前記基準電圧の電圧レベルは、前記発振器の出力信号の最大電圧レベルと最小電圧レベルとの間であることを特徴とする請求項2に記載の同期整流方式スイッチングレギュレータ制御回路。
- 前記論理回路はスタート終了信号を入力し、前記スタート終了信号を入力したときは前記第2の比較回路からの出力信号にかかわらず、前記出力パルスが前記同期整流回路へ供給されることを特徴とする請求項2に記載の同期整流方式スイッチングレギュレータ制御回路。
- 請求項1乃至5に記載した同期整流方式スイッチングレギュレータ制御回路を有する半導体集積回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003385009A JP4412535B2 (ja) | 2003-11-14 | 2003-11-14 | 同期整流方式スイッチングレギュレータ制御回路及びこれを含む半導体集積回路 |
US10/987,545 US7535206B2 (en) | 2003-11-14 | 2004-11-12 | Synchronous rectifying type switching regulator control circuit and semiconductor integrated circuit including the same |
TW093134721A TWI354437B (en) | 2003-11-14 | 2004-11-12 | Synchronous rectifying type switching regulator co |
CN200410103877XA CN1625034B (zh) | 2003-11-14 | 2004-11-15 | 同步整流型开关调节控制电路 |
HK05111043.9A HK1079349A1 (en) | 2003-11-14 | 2005-12-02 | Synchronous rectifying type switching regulator control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003385009A JP4412535B2 (ja) | 2003-11-14 | 2003-11-14 | 同期整流方式スイッチングレギュレータ制御回路及びこれを含む半導体集積回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005151689A true JP2005151689A (ja) | 2005-06-09 |
JP4412535B2 JP4412535B2 (ja) | 2010-02-10 |
Family
ID=34631386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003385009A Expired - Fee Related JP4412535B2 (ja) | 2003-11-14 | 2003-11-14 | 同期整流方式スイッチングレギュレータ制御回路及びこれを含む半導体集積回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7535206B2 (ja) |
JP (1) | JP4412535B2 (ja) |
CN (1) | CN1625034B (ja) |
HK (1) | HK1079349A1 (ja) |
TW (1) | TWI354437B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007028771A (ja) * | 2005-07-14 | 2007-02-01 | Sanyo Electric Co Ltd | スイッチング制御回路、dc−dcコンバータ |
JP2012220894A (ja) * | 2011-04-13 | 2012-11-12 | Kyocera Document Solutions Inc | 高圧電源装置及び画像形成装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5167705B2 (ja) * | 2007-07-02 | 2013-03-21 | 富士電機株式会社 | スイッチング電源装置 |
JP5091024B2 (ja) * | 2008-06-24 | 2012-12-05 | 株式会社リコー | スイッチングレギュレータ及びその動作制御方法 |
CN103795228B (zh) * | 2014-02-18 | 2016-05-11 | 成都芯源系统有限公司 | 一种用于开关变换器的控制电路及其控制方法 |
CN114337266B (zh) * | 2021-12-17 | 2023-12-26 | 上海晶丰明源半导体股份有限公司 | 开关电源及用于开关电源的控制电路 |
Family Cites Families (16)
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EP0741447A3 (en) * | 1995-05-04 | 1997-04-16 | At & T Corp | Method and device for controlling a synchronous rectifier converter circuit |
US5912552A (en) * | 1997-02-12 | 1999-06-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | DC to DC converter with high efficiency for light loads |
US5966003A (en) * | 1997-05-15 | 1999-10-12 | Fujitsu Limited | DC-DC converter control circuit |
JP3957019B2 (ja) * | 1998-01-30 | 2007-08-08 | 富士通株式会社 | Dc−dcコンバータ制御回路 |
US5940287A (en) * | 1998-07-14 | 1999-08-17 | Lucent Technologies Inc. | Controller for a synchronous rectifier and power converter employing the same |
JP2000056843A (ja) * | 1998-08-04 | 2000-02-25 | Toyota Autom Loom Works Ltd | 基準電圧生成回路 |
JP3389524B2 (ja) * | 1999-02-23 | 2003-03-24 | 松下電器産業株式会社 | スイッチングレギュレータ、dc/dc変換器、およびスイッチングレギュレータを備えたlsiシステム |
US6396252B1 (en) * | 2000-12-14 | 2002-05-28 | National Semiconductor Corporation | Switching DC-to-DC converter with discontinuous pulse skipping and continuous operating modes without external sense resistor |
US6711039B2 (en) * | 2001-07-05 | 2004-03-23 | Di/Dt, Inc. | Method and apparatus for controlling synchronous rectifiers of a power converter |
US6760235B2 (en) * | 2001-09-13 | 2004-07-06 | Netpower Technologies, Inc. | Soft start for a synchronous rectifier in a power converter |
US6618274B2 (en) * | 2001-10-09 | 2003-09-09 | Innoveta Technologies | Synchronous rectifier controller to eliminate reverse current flow in a DC/DC converter output |
US6850401B2 (en) * | 2002-05-28 | 2005-02-01 | Matsushita Electric Industrial Co., Ltd. | DC-DC converter |
US6912138B2 (en) * | 2002-09-03 | 2005-06-28 | Artesyn Technologies, Inc. | Synchronous rectifier control circuit |
US6922041B2 (en) * | 2003-02-28 | 2005-07-26 | Sipex Corporation | Apparatus for and method of adjusting a switching regulator output for a circuit having a pre-charge voltage |
US6841977B2 (en) * | 2003-03-03 | 2005-01-11 | Astec International Limited | Soft-start with back bias conditions for PWM buck converter with synchronous rectifier |
US6853562B2 (en) * | 2003-06-26 | 2005-02-08 | Optimum Power Conversion, Inc. | Voltage sense method and circuit which alleviate reverse current flow of current bi-directional converters |
-
2003
- 2003-11-14 JP JP2003385009A patent/JP4412535B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-12 US US10/987,545 patent/US7535206B2/en not_active Expired - Fee Related
- 2004-11-12 TW TW093134721A patent/TWI354437B/zh not_active IP Right Cessation
- 2004-11-15 CN CN200410103877XA patent/CN1625034B/zh not_active Expired - Fee Related
-
2005
- 2005-12-02 HK HK05111043.9A patent/HK1079349A1/xx not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007028771A (ja) * | 2005-07-14 | 2007-02-01 | Sanyo Electric Co Ltd | スイッチング制御回路、dc−dcコンバータ |
JP4686285B2 (ja) * | 2005-07-14 | 2011-05-25 | 三洋電機株式会社 | スイッチング制御回路、dc−dcコンバータ |
JP2012220894A (ja) * | 2011-04-13 | 2012-11-12 | Kyocera Document Solutions Inc | 高圧電源装置及び画像形成装置 |
Also Published As
Publication number | Publication date |
---|---|
US20050122750A1 (en) | 2005-06-09 |
TW200524254A (en) | 2005-07-16 |
TWI354437B (en) | 2011-12-11 |
JP4412535B2 (ja) | 2010-02-10 |
US7535206B2 (en) | 2009-05-19 |
CN1625034B (zh) | 2010-05-12 |
CN1625034A (zh) | 2005-06-08 |
HK1079349A1 (en) | 2006-03-31 |
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