JP2019058027A - スイッチング電源装置 - Google Patents
スイッチング電源装置 Download PDFInfo
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- JP2019058027A JP2019058027A JP2017182258A JP2017182258A JP2019058027A JP 2019058027 A JP2019058027 A JP 2019058027A JP 2017182258 A JP2017182258 A JP 2017182258A JP 2017182258 A JP2017182258 A JP 2017182258A JP 2019058027 A JP2019058027 A JP 2019058027A
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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
- H02M1/08—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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
-
- 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
-
- 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
- H02M1/0009—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
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
(第1の実施の形態)
図1は本発明の第1の実施の形態に係るスイッチング電源装置を示す回路図である。また、図2及び図3は関連技術に係るスイッチング電源装置においてスペクトラム拡散を行った場合の課題を説明するための説明図である。
Vout=Duty×Vin
いま、スペクトラム拡散動作によってスイッチング周波数が変動し、スイッチング周期T1がT2に変動するものとする。スイッチング周期の変化によって出力電圧Voutも変化するが、スイッチング周期の変化に対して出力電圧のフィードバックによって得られる制御AMP信号の変化は遅く、スイッチング周波数が変化しても制御AMP信号のレベルは周波数変動前のレベルを維持してしまう。従って、PWM信号のパルス幅Td1は変化せず、スイッチング周期のみが変化することから、結果としてスイッチング周波数の変化に応じてデューティ比が変化する。
ΔV=(VOUT/VIN)×(T2−T1)×GiV×(S+Se) …(1)
なお、S=(VIN−VOUT)/Lである。
V=α・Td1=α・β・T1 …(2)
また、V+ΔV=α・Td2であり、Td2=(V+ΔV)/αである。この式に上記(2)式を代入すると、下記(3)式が得られる。
Td2=(α・β・T1+ΔV)/α …(3)
上記(1)式は、補正電圧ΔVがデューティ比とスロープ信号の傾きと(T2−T1)との積で得られることを示しており、(3)式を変形して下記(4)式が得られる。
Td2={α・β・T1+α・β(T2−T1)}/α=β・T2 …(4)
即ち、この(4)式は、Td2/T2=β(=Td1/T1)を示しており、出力電圧VOUTが変化しておらず、周期T1,T2を除く上記(1)式の各項が変化していない場合には、周期の変化に拘わらず、デューティ比は一定であることを示している。
(第2の実施の形態)
図6は本発明の第2の実施の形態を示すブロック図である。図6において図1と同一の構成要素には同一符号を付して説明を省略する。
Claims (6)
- スイッチングによって入力電圧から得たパルス出力を出力コイル及び出力コンデンサを介して負荷に供給するスイッチ回路と、
PWM信号のデューティ比に応じて前記スイッチ回路をオン,オフ駆動する駆動信号制御回路と、
前記負荷に供給される出力電圧と基準電圧とを比較して誤差検出信号を発生する誤差検出アンプと、
前記PWM信号の周期でレベル変化を開始するスロープ信号と前記誤差検出信号との比較によって前記PWM信号を発生して前記駆動信号制御回路に与える比較器と、
スペクトラム拡散のために前記PWM信号の周期を変動させる制御部と、
前記PWM信号の周期の変動に応じたオフセットを発生して、発生した前記オフセットを前記スロープ信号又は前記誤差検出信号に付加するスペクトラム拡散補正回路と
を具備するスイッチング電源装置。 - 前記出力コイルに流れるコイル電流を検出する電流検出回路と、
前記電流検出回路が検出した前記コイル電流に基づく前記スロープ信号に前記オフセットを加える加算器と
を更に具備する請求項1に記載のスイッチング電源装置。 - 前記誤差検出アンプからの前記誤差検出信号に前記オフセットを加えて前記比較器に与える加算器
を更に具備する請求項1に記載のスイッチング電源装置。 - 前記スペクトラム拡散補正回路は、前記入力電圧、前記出力電圧及び前記出力コイルのインダクタンスに基づいて前記オフセットを求める
請求項1に記載のスイッチング電源装置。 - 前記スペクトラム拡散補正回路は、前記入力電圧の値を計測し、前記出力電圧及び前記出力コイルの値を前記制御部から取得する
請求項4に記載のスイッチング電源装置。 - 前記スペクトラム拡散補正回路は、前記入力電圧、前記出力電圧及び前記出力コイルの値を前記制御部から取得する
請求項4に記載のスイッチング電源装置。
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JP2017182258A JP6889078B2 (ja) | 2017-09-22 | 2017-09-22 | スイッチング電源装置 |
US15/923,422 US10476389B2 (en) | 2017-09-22 | 2018-03-16 | Switching power supply apparatus |
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JP2017182258A JP6889078B2 (ja) | 2017-09-22 | 2017-09-22 | スイッチング電源装置 |
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JP2019058027A true JP2019058027A (ja) | 2019-04-11 |
JP6889078B2 JP6889078B2 (ja) | 2021-06-18 |
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Cited By (1)
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JP2022553757A (ja) * | 2019-12-13 | 2022-12-26 | 北京集創北方科技股▲ふん▼有限公司 | 電圧調整装置、チップ及び電子機器 |
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DE102016215147A1 (de) * | 2016-08-15 | 2018-02-15 | Robert Bosch Gmbh | Gleichspannungs-Konverter und Verfahren zur Regelung eines Gleichspannungs-Konverters |
US11637493B2 (en) * | 2020-11-23 | 2023-04-25 | Robert S. Wrathall | Electrical circuits for power factor correction by measurement and removal of overtones and power factor maximization |
US11870347B2 (en) * | 2022-01-28 | 2024-01-09 | Texas Instruments Incorporated | Spread spectrum modulation of rising and falling edge delays for current mode switching converters |
TWI824457B (zh) * | 2022-03-28 | 2023-12-01 | 晶豪科技股份有限公司 | 具工作週期控制的音訊放大器 |
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