JP2017169333A - スイッチングレギュレータ - Google Patents
スイッチングレギュレータ Download PDFInfo
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- JP2017169333A JP2017169333A JP2016051496A JP2016051496A JP2017169333A JP 2017169333 A JP2017169333 A JP 2017169333A JP 2016051496 A JP2016051496 A JP 2016051496A JP 2016051496 A JP2016051496 A JP 2016051496A JP 2017169333 A JP2017169333 A JP 2017169333A
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- 239000003990 capacitor Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
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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
- H02M3/157—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 with digital control
-
- 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
-
- 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
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- 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
-
- 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)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Electronic Switches (AREA)
Abstract
【解決手段】スイッチング素子17をオンする期間を決定するオン信号を出力するR−Sフリップフロップ13と、R−Sフリップフロップのオン信号に基づきスイッチング素子17、18に制御信号を出力する出力制御回路14と、を備える。オン時間制御回路11は、R−Sフリップフロップが出力するオン信号が入力される第一の入力回路と、出力制御回路の出力する制御信号が入力される第二の入力端子を備え、第二の入力端子に入力される制御信号に基づいて間欠動作を行う。
【選択図】図1
Description
図3は、従来のCOT制御のスイッチングレギュレータの回路図である。
スイッチングレギュレータ300は、出力電圧VOUTに基づいた帰還電圧VFBと基準電圧VREFを比較するエラーコンパレータ10の出力する信号と、オン時間制御回路31の出力する信号と、によって、R−Sフリップフロップ13がスイッチング素子を制御する信号を出力する。オン時間制御回路31は、COT制御において必須の回路である。
オン時間制御回路31は、電流源3が流す入力電源電圧VINに比例した電流でコンデンサ2をチャージして、電流源4が流す電流で駆動されるコンパレータ35がコンデンサ2の電圧を出力電圧VOUTと比較してオン時間を決定する。従って、オン時間制御回路31は、入力電源電圧VINに反比例し出力電圧VOUTに比例するオン時間を決定する(例えば、特許文献1参照)。
オン時間制御回路31は、電流源33や電流源34が流す電流で、スイッチング素子のオフ時間においても電力を消費しており、特に軽負荷時に不要な電力消費があるという課題があった。
ことを特徴とするスイッチングレギュレータ。
図1は、本発明のCOT制御のスイッチングレギュレータの一例を示す回路図である。
スイッチングレギュレータ100は、エラーコンパレータ10と、オン時間制御回路11と、基準電圧回路12と、R−Sフリップフロップ13と、出力制御回路14と、ドライバ15及び16と、ハイサイドスイッチング素子であるPMOSトランジスタ17と、ローサイドスイッチング素子であるNMOSトランジスタ18と、インダクタ19と、コンデンサ20と、分圧回路21と、電源電圧VINが入力される電源端子と、出力電圧VOUTが出力される出力端子を備えている。
COT制御のスイッチングレギュレータ100は、一般的な構成であるため、接続関係の説明は省略する。
オン時間制御回路11は、インバータ1と、コンデンサ2と、電流源3及び4と、コンパレータ5と、NMOSトランジスタ6と、スイッチ7及び8と、第一の入力端子IN1と、第二の入力端子IN2と、出力端子OUTと、を備えている。
このようにして、スイッチングレギュレータ100は、スイッチング動作をして、出力端子に所望の出力電圧VOUTを出力する。
第一の入力端子IN1にR−Sフリップフロップ13の出力端子Qから出力されるH信号が入力されると、NMOSトランジスタ6はオフする。第二の入力端子IN2に出力制御回路14の第一の出力端子から出力される、PMOSトランジスタ17をオンするL信号が入力されると、スイッチ7及び8はオンする。コンパレータ5は、電流源4の電流が供給されるので、動作を開始し、出力端子OUTからL信号を出力する。コンデンサ2は、電流源3の電流でチャージされる。コンパレータ5は、コンデンサ2の電圧が出力電圧VOUT以上になると、出力端子OUTからH信号を出力する。
5 コンパレータ
10 エラーコンパレータ
11 オン時間制御回路
12 基準電圧回路
13 R−Sフリップフロップ
14 出力制御回路
Claims (2)
- 電源電圧からスイッチング素子によって出力端子に所望の出力電圧を出力するスイッチングレギュレータであって、
前記出力電圧を監視しセット信号を出力するエラーコンパレータと、
前記スイッチング素子のオン時間を制御するリセット信号を出力するオン時間制御回路と、
前記セット信号と前記リセット信号に基づき、前記スイッチング素子をオンする期間を決定するオン信号を出力するR−Sフリップフロップと、
前記R−Sフリップフロップのオン信号に基づき前記スイッチング素子に制御信号を出力する出力制御回路と、を備え、
前記オン時間制御回路は、前記R−Sフリップフロップが出力するオン信号が入力される第一の入力回路と、前記出力制御回路の出力する制御信号が入力される第二の入力端子を備え、前記第二の入力端子に入力される前記制御信号に基づいて間欠動作を行う
ことを特徴とするスイッチングレギュレータ。 - 前記オン時間制御回路は、前記第二の入力端子に入力される前記制御信号に基づいてオンオフが制御されるスイッチと、前記スイッチに接続された電流源と、を備え、
前記スイッチは、前記スイッチング素子をオフする期間にオフし、前記電流源から回路への電流供給を遮断する
ことを特徴とする請求項1に記載のスイッチングレギュレータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2016051496A JP6632436B2 (ja) | 2016-03-15 | 2016-03-15 | スイッチングレギュレータ |
TW106107893A TWI716557B (zh) | 2016-03-15 | 2017-03-10 | 切換調節器 |
CN201710149590.8A CN107196507B (zh) | 2016-03-15 | 2017-03-14 | 开关调节器 |
KR1020170031916A KR102267091B1 (ko) | 2016-03-15 | 2017-03-14 | 스위칭 레귤레이터 |
US15/458,475 US9800149B2 (en) | 2016-03-15 | 2017-03-14 | Switching regulator |
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JP2016051496A JP6632436B2 (ja) | 2016-03-15 | 2016-03-15 | スイッチングレギュレータ |
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JP2017169333A true JP2017169333A (ja) | 2017-09-21 |
JP6632436B2 JP6632436B2 (ja) | 2020-01-22 |
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US (1) | US9800149B2 (ja) |
JP (1) | JP6632436B2 (ja) |
KR (1) | KR102267091B1 (ja) |
CN (1) | CN107196507B (ja) |
TW (1) | TWI716557B (ja) |
Families Citing this family (3)
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US10790746B2 (en) * | 2017-08-04 | 2020-09-29 | Dialog Semiconductor (Uk) Limited | Power dissipation regulated buck architecture |
TWI678063B (zh) * | 2018-12-03 | 2019-11-21 | 晶豪科技股份有限公司 | 恆定開啟期間控制器與使用其的降壓轉換器 |
JP2022138742A (ja) * | 2021-03-11 | 2022-09-26 | エイブリック株式会社 | スイッチングレギュレータ制御回路及びdc/dcコンバータ |
Citations (3)
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JP2010200450A (ja) * | 2009-02-24 | 2010-09-09 | Fujitsu Semiconductor Ltd | 半導体集積回路および電源装置 |
JP2013094046A (ja) * | 2011-10-06 | 2013-05-16 | Ricoh Co Ltd | スイッチングレギュレータ及び電子機器 |
JP2015188301A (ja) * | 2014-03-11 | 2015-10-29 | セイコーインスツル株式会社 | Dc/dcコンバータ |
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TW200838133A (en) * | 2007-03-05 | 2008-09-16 | Analog Integrations Corp | Signal generating apparatus and method thereof |
JP2008228514A (ja) * | 2007-03-15 | 2008-09-25 | Ricoh Co Ltd | スイッチングレギュレータ及びその動作制御方法 |
JP2010183722A (ja) * | 2009-02-05 | 2010-08-19 | Mitsumi Electric Co Ltd | Dc−dcコンバータおよびスイッチング制御回路 |
US8531166B2 (en) * | 2010-07-26 | 2013-09-10 | Richtek Technology Corporation, R.O.C. | Constant on-time switching regulator, and control method and on-time calculation circuit therefor |
US20120049826A1 (en) * | 2010-08-31 | 2012-03-01 | Intersil Americas Inc. | System and method of adaptive slope compensation for voltage regulator with constant on-time control |
CN102035392B (zh) * | 2010-12-07 | 2013-02-27 | 魏其萃 | 宽输入电压范围正激式开关电源 |
CN103475210B (zh) * | 2011-09-14 | 2016-04-27 | 矽力杰半导体技术(杭州)有限公司 | 一种开关型调节器的恒定时间控制方法、控制电路以及应用其的开关型调节器 |
CN102868297B (zh) * | 2012-09-20 | 2014-09-10 | 电子科技大学 | 一种固定截止时间pfm模式开关电源控制器 |
KR102031534B1 (ko) * | 2013-01-07 | 2019-10-14 | 삼성전자 주식회사 | 스위칭 레귤레이터 및 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법 |
JP6376961B2 (ja) | 2014-03-11 | 2018-08-22 | エイブリック株式会社 | Dc/dcコンバータ |
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CN104242644B (zh) * | 2014-10-11 | 2017-04-12 | 成都芯源系统有限公司 | 用于开关转换器的控制电路和控制方法 |
CN105226940B (zh) * | 2015-10-28 | 2018-01-23 | 成都芯源系统有限公司 | 升压电路及其控制方法 |
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- 2017-03-14 CN CN201710149590.8A patent/CN107196507B/zh active Active
- 2017-03-14 KR KR1020170031916A patent/KR102267091B1/ko active IP Right Grant
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JP2010200450A (ja) * | 2009-02-24 | 2010-09-09 | Fujitsu Semiconductor Ltd | 半導体集積回路および電源装置 |
JP2013094046A (ja) * | 2011-10-06 | 2013-05-16 | Ricoh Co Ltd | スイッチングレギュレータ及び電子機器 |
JP2015188301A (ja) * | 2014-03-11 | 2015-10-29 | セイコーインスツル株式会社 | Dc/dcコンバータ |
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Publication number | Publication date |
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CN107196507A (zh) | 2017-09-22 |
TWI716557B (zh) | 2021-01-21 |
CN107196507B (zh) | 2020-06-05 |
KR20170107400A (ko) | 2017-09-25 |
US20170271986A1 (en) | 2017-09-21 |
JP6632436B2 (ja) | 2020-01-22 |
US9800149B2 (en) | 2017-10-24 |
KR102267091B1 (ko) | 2021-06-18 |
TW201806301A (zh) | 2018-02-16 |
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