JP7393311B2 - スイッチング電源回路 - Google Patents
スイッチング電源回路 Download PDFInfo
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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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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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
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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
-
- 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
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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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
- H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations
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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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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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
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- 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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a 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
- H02M1/36—Means for starting or stopping converters
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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
- H02M1/38—Means for preventing simultaneous conduction of switches
- H02M1/385—Means for preventing simultaneous conduction of switches with means for correcting output voltage deviations introduced by the dead time
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Description
(第1実施形態)
以下、第1実施形態について図1~図3を参照して説明する。
上記構成の信号生成回路31では、入力電圧VINに比例したカレントミラー回路32の入力電流をゲインgmx倍した電流Ixが生成され、その電流Ixが抵抗33により電圧に変換される。そして、上記構成の信号生成回路31では、出力比例電圧Voに対して上記変換された電圧をゲインK倍したオフセット電圧Vxが加算された電圧Vo+Vxがコンパレータ25の反転入力端子に与えられている。
以下、第1実施形態に対して信号生成回路の具体的な構成が変更された第2実施形態について図4を参照して説明する。
図4に示すように、本実施形態の信号生成回路41は、図2に示した第1実施形態の信号生成回路31に対し、カレントミラー回路32に代えてカレントミラー回路42を備える点、増幅器34および加算器35に代えて抵抗43およびカレントミラー回路44を備える点などが異なる。
以下、第2実施形態に対して信号生成回路の具体的な構成が変更された第3実施形態について図5を参照して説明する。
図5に示すように、本実施形態の信号生成回路61は、図4に示した第2実施形態の信号生成回路41に対し、抵抗62が追加されている点などが異なる。この場合、カレントミラー回路42のトランジスタ45から出力される電流Ixの電流増幅率は「gmx」となっている。カレントミラー回路44のトランジスタ47の他方の主端子は、ノードN61に接続されている。抵抗62は、ノードN31とノードN61との間に接続されている。抵抗33の抵抗値R1および抵抗62の抵抗値R2は、下記(12)式および下記(13)式を満たすような値に設定されている。
以下、第3実施形態に対して信号生成回路の具体的な構成が変更された第4実施形態について図6を参照して説明する。
図6に示すように、本実施形態の信号生成回路71は、図5に示した第3実施形態の信号生成回路61に対し、カレントミラー回路44に代えてカレントミラー回路22およびD/A変換器72を備える点などが異なっている。なお、本明細書では、D/A変換器のことをDACと省略することがある。
以下、第4実施形態に対して信号生成回路の具体的な構成が変更された第5実施形態について図7および図8を参照して説明する。
図7に示すように、本実施形態の信号生成回路81は、図6に示した第4実施形態の信号生成回路71に対し、デッドタイム検出部82および出力補正部83が追加されている点などが異なっている。
なお、本発明は上記し且つ図面に記載した各実施形態に限定されるものではなく、その要旨を逸脱しない範囲で任意に変形、組み合わせ、あるいは拡張することができる。
上記各実施形態で示した数値などは例示であり、それに限定されるものではない。
上記各実施形態において出力電圧VOUTに比例した出力比例電圧Voが用いられている箇所について、出力電圧VOUTそのものを用いるように変更してもよい。
Claims (5)
- 2つのスイッチング素子(2、3)を備え、それら2つのスイッチング素子を相補的にオンオフすることにより入力電圧を所望の出力電圧に変換する同期整流方式のスイッチング電源回路であって、
前記出力電圧に応じたフィードバック電圧および所定の第1基準電圧を比較する第1コンパレータ(11)と、
前記第1コンパレータの出力信号、前記入力電圧および前記出力電圧に基づいて、前記スイッチング素子をオンするオン時間に対応するオン時間信号を生成する信号生成回路(31、41、61、71、81)と、
前記オン時間信号に基づいて前記スイッチング素子を駆動する駆動回路(14)と、
を備え、
前記信号生成回路は、
前記入力電圧に比例した電流により充放電されるコンデンサ(24)と、
前記第1コンパレータの出力信号に基づいて前記コンデンサの充放電を制御するスイッチ(23)と、
前記出力電圧に比例した出力比例電圧に対して前記入力電圧に比例したオフセット電圧を加えた電圧である第2基準電圧を生成する基準電圧生成部(37、50、64、74、91)と、
前記コンデンサの端子電圧および前記第2基準電圧を比較する第2コンパレータ(25)と、
を備え、
前記第2コンパレータの出力信号に基づいて前記オン時間信号を生成するスイッチング電源回路。 - 前記基準電圧生成部(50、64、74、91)は、
前記出力電圧に比例した出力比例電流を生成する第1電流生成部(48)と、
前記入力電圧に比例したオフセット電流を生成する第2電流生成部(49、73、90)と、
前記出力比例電流に前記オフセット電流を加算した加算電流を電圧に変換することにより前記オフセット電圧を生成する電圧生成部(33、63)と、
を備える請求項1に記載のスイッチング電源回路。 - 前記電圧生成部(63)は、
前記出力比例電流が流れる経路に介在する2つの抵抗(33、62)の直列回路を備え、
前記2つの抵抗のうち低電位側に配置される抵抗(33)には、前記オフセット電流も流れるようになっており、
前記直列回路の端子電圧から前記オフセット電圧を生成するようになっている請求項2に記載のスイッチング電源回路。 - 前記第2電流生成部(73、90)は、電流出力型のD/A変換器(72)を備え、前記D/A変換器の出力電流から前記オフセット電流を生成するようになっている請求項2または3に記載のスイッチング電源回路。
- 前記第2電流生成部(90)は、
前記2つのスイッチング素子の双方がオフする期間であるデッドタイムを検出するデッドタイム検出部(82)と、
前記デッドタイム検出部による検出の結果に基づいて前記D/A変換器の出力電流を補正する出力補正部(83)と、
を備える請求項4に記載のスイッチング電源回路。
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JP2020154613A JP7393311B2 (ja) | 2020-09-15 | 2020-09-15 | スイッチング電源回路 |
CN202111067068.8A CN114189142A (zh) | 2020-09-15 | 2021-09-13 | 开关电源电路 |
US17/472,913 US11736019B2 (en) | 2020-09-15 | 2021-09-13 | Switching power supply circuit |
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JP2016032320A (ja) | 2014-07-28 | 2016-03-07 | ローム株式会社 | スイッチング電源装置 |
US20170163150A1 (en) | 2015-12-07 | 2017-06-08 | M3 Technology Inc. | Synchronous buck dc-dc converter and method thereof |
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JP3963794B2 (ja) * | 2002-07-09 | 2007-08-22 | ローム株式会社 | Dc/dcコンバータ |
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JP2012044784A (ja) * | 2010-08-19 | 2012-03-01 | Sanken Electric Co Ltd | スイッチング電源装置 |
CN102075089B (zh) * | 2011-02-25 | 2012-10-03 | 电子科技大学 | 带有数字校正功能的功率变换器 |
JP6403973B2 (ja) * | 2014-04-01 | 2018-10-10 | ローム株式会社 | スイッチングレギュレータ |
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JP6255146B1 (ja) | 2017-07-20 | 2017-12-27 | 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 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013247694A (ja) | 2012-05-23 | 2013-12-09 | Rohm Co Ltd | スイッチング電源装置 |
JP2016032320A (ja) | 2014-07-28 | 2016-03-07 | ローム株式会社 | スイッチング電源装置 |
US20170163150A1 (en) | 2015-12-07 | 2017-06-08 | M3 Technology Inc. | Synchronous buck dc-dc converter and method thereof |
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US11736019B2 (en) | 2023-08-22 |
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