JP2001169544A5 - - Google Patents

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Publication number
JP2001169544A5
JP2001169544A5 JP1999343057A JP34305799A JP2001169544A5 JP 2001169544 A5 JP2001169544 A5 JP 2001169544A5 JP 1999343057 A JP1999343057 A JP 1999343057A JP 34305799 A JP34305799 A JP 34305799A JP 2001169544 A5 JP2001169544 A5 JP 2001169544A5
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Japan
Prior art keywords
output
converter
switch
detection circuit
peak value
Prior art date
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Application number
JP1999343057A
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Japanese (ja)
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JP2001169544A (en
JP4399929B2 (en
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Publication date
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Priority to JP34305799A priority Critical patent/JP4399929B2/en
Priority claimed from JP34305799A external-priority patent/JP4399929B2/en
Publication of JP2001169544A publication Critical patent/JP2001169544A/en
Publication of JP2001169544A5 publication Critical patent/JP2001169544A5/ja
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Publication of JP4399929B2 publication Critical patent/JP4399929B2/en
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Description

【特許請求の範囲】
【請求項1】 直流電源からの入力電圧をスイッチのオンオフにより他の直流電圧に変換して負荷へ出力する直流―直流変換部を備えたスイッチング電源装置において、
前記直流―直流変換部の出力電圧を検出する出力電圧検出回路と、
前記直流―直流変換部の出力電流または前記直流―直流変換部の内部電流を検出する出力電流検出回路と、
前記出力電圧検出回路の出力と、前記出力電流検出回路の出力を入力して前記直流―直流変換部の出力制御を行う制御回路と、
前記出力電流検出回路からの出力電圧波高値により前記スイッチに流れるスイッチ電流のピーク値を制限するスイッチ電流ピーク値制限回路と、
を具備することを特徴とするスイッチング電源装置。
【請求項2】 直流電源からの入力電圧をスイッチのオンオフにより他の直流電圧に変換して負荷へ出力する直流―直流変換部を備えたスイッチング電源装置において、
前記直流―直流変換部の出力電圧を検出する出力電圧検出回路と、
前記直流―直流変換部の出力電流または前記直流―直流変換部の内部電流を検出する出力電流検出回路と、
前記出力電圧検出回路の出力と、前記出力電流検出回路の出力を入力して前記直流―直流変換部の出力制御を行う制御回路と、
前記出力電流検出回路からの出力をパルス出力に変換するパルス変換回路と、
前記パルス変換回路からの出力電圧波高値により前記スイッチに流れるスイッチ電流のピーク値を制限するスイッチ電流ピーク値制限回路と、
を具備することを特徴とするスイッチング電源装置。
【請求項3】 前記パルス変換回路が前記スイッチのオンオフ周波数と同期した出力パルスを出力することを特徴とする請求項2記載のスイッチング電源装置。
【請求項4】 前記パルス変換回路が前記スイッチのオンオフ周波数と同期しかつ同一位相の出力パルスを出力することを特徴とする請求項2記載のスイッチング電源装置。
【請求項5】 負荷が放電灯であることを特徴とする請求項1〜4の何れかに記載のスイッチング電源装置。
[Claims]
[Claim 1] In a switching power supply device equipped with a DC-DC converter that converts the input voltage from a DC power supply into another DC voltage by turning the switch on and off and outputs it to the load.
An output voltage detection circuit that detects the output voltage of the DC-DC converter and
An output current detection circuit that detects the output current of the DC-DC converter or the internal current of the DC-DC converter, and
A control circuit that inputs the output of the output voltage detection circuit and the output of the output current detection circuit to control the output of the DC-DC converter.
A switch current peak value limiting circuit that limits the peak value of the switch current flowing through the switch by the output voltage peak value from the output current detection circuit, and a switch current peak value limiting circuit.
A switching power supply device comprising.
2. In a switching power supply device equipped with a DC-DC converter that converts the input voltage from a DC power supply into another DC voltage by turning the switch on and off and outputs it to the load.
An output voltage detection circuit that detects the output voltage of the DC-DC converter and
An output current detection circuit that detects the output current of the DC-DC converter or the internal current of the DC-DC converter, and
A control circuit that inputs the output of the output voltage detection circuit and the output of the output current detection circuit to control the output of the DC-DC converter.
A pulse conversion circuit that converts the output from the output current detection circuit into a pulse output, and
A switch current peak value limiting circuit that limits the peak value of the switch current flowing through the switch by the output voltage peak value from the pulse conversion circuit, and a switch current peak value limiting circuit.
A switching power supply device comprising.
3. The pulse conversion circuitOn / off frequency of the switchThe switching power supply device according to claim 2, wherein an output pulse synchronized with is output.
4. The pulse conversion circuitOn / off frequency of the switchSynchronize withAndThe switching power supply device according to claim 2, wherein output pulses having the same phase are output.
5. The switching power supply device according to claim 1, wherein the load is a discharge lamp.

【0009】
【課題を解決するための手段】
以上のような課題を解決するため、本発明のスイッチング電源装置は、
直流電源からの入力電圧をスイッチのオンオフにより他の直流電圧に変換して負荷へ出力する直流―直流変換部を備えたスイッチング電源装置において、
前記直流―直流変換部の出力電圧を検出する出力電圧検出回路と、
前記直流―直流変換部の出力電流または前記直流―直流変換部の内部電流を検出する出力電流検出回路と、
前記出力電圧検出回路の出力と、前記出力電流検出回路の出力を入力して前記直流―直流変換部の出力制御を行う制御回路と、
前記出力電流検出回路からの出力電圧波高値により前記スイッチに流れるスイッチ電流のピーク値を制限するスイッチ電流ピーク値制限回路と、
を具備している。
また、本発明のスイッチング電源装置は、
直流電源からの入力電圧をスイッチのオンオフにより他の直流電圧に変換して負荷へ出力する直流―直流変換部を備えたスイッチング電源装置において、
前記直流―直流変換部の出力電圧を検出する出力電圧検出回路と、
前記直流―直流変換部の出力電流または前記直流―直流変換部の内部電流を検出する出力電流検出回路と、
前記出力電圧検出回路の出力と、前記出力電流検出回路の出力を入力して前記直流―直流変換部の出力制御を行う制御回路と、
前記出力電流検出回路からの出力をパルス出力に変換するパルス変換回路と、
前記パルス変換回路からの出力電圧波高値により前記スイッチに流れるスイッチ電流のピーク値を制限するスイッチ電流ピーク値制限回路と、
を具備している。
0009
[Means for solving problems]
In order to solve the above problems, the switching power supply device of the present invention is used.
In a switching power supply device equipped with a DC-DC converter that converts the input voltage from a DC power supply into another DC voltage by turning the switch on and off and outputs it to the load.
An output voltage detection circuit that detects the output voltage of the DC-DC converter and
An output current detection circuit that detects the output current of the DC-DC converter or the internal current of the DC-DC converter, and
A control circuit that inputs the output of the output voltage detection circuit and the output of the output current detection circuit to control the output of the DC-DC converter.
A switch current peak value limiting circuit that limits the peak value of the switch current flowing through the switch by the output voltage peak value from the output current detection circuit, and a switch current peak value limiting circuit.
Is equipped with.
Further, the switching power supply device of the present invention is
In a switching power supply device equipped with a DC-DC converter that converts the input voltage from a DC power supply into another DC voltage by turning the switch on and off and outputs it to the load.
An output voltage detection circuit that detects the output voltage of the DC-DC converter and
An output current detection circuit that detects the output current of the DC-DC converter or the internal current of the DC-DC converter, and
A control circuit that inputs the output of the output voltage detection circuit and the output of the output current detection circuit to control the output of the DC-DC converter.
A pulse conversion circuit that converts the output from the output current detection circuit into a pulse output, and
A switch current peak value limiting circuit that limits the peak value of the switch current flowing through the switch by the output voltage peak value from the pulse conversion circuit, and a switch current peak value limiting circuit.
Is equipped with.

JP34305799A 1999-12-02 1999-12-02 Switching power supply Expired - Fee Related JP4399929B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34305799A JP4399929B2 (en) 1999-12-02 1999-12-02 Switching power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34305799A JP4399929B2 (en) 1999-12-02 1999-12-02 Switching power supply

Publications (3)

Publication Number Publication Date
JP2001169544A JP2001169544A (en) 2001-06-22
JP2001169544A5 true JP2001169544A5 (en) 2008-01-24
JP4399929B2 JP4399929B2 (en) 2010-01-20

Family

ID=18358613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34305799A Expired - Fee Related JP4399929B2 (en) 1999-12-02 1999-12-02 Switching power supply

Country Status (1)

Country Link
JP (1) JP4399929B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6747443B2 (en) * 2001-08-31 2004-06-08 Power Integrations, Inc. Method and apparatus for trimming current limit and frequency to maintain a constant maximum power
JP4535029B2 (en) * 2006-06-12 2010-09-01 Tdk株式会社 Precharge circuit
CN101724824B (en) * 2008-10-31 2012-03-21 中国科学院沈阳科学仪器研制中心有限公司 Over-current protection device for physical vapor deposition heating system
CN101909392A (en) * 2010-08-25 2010-12-08 四川省桑瑞光辉标识系统制造有限公司 LED intelligent dynamic control system and control method
JP5260719B2 (en) * 2011-11-30 2013-08-14 ファナック株式会社 Motor drive device having power failure determination unit for determining presence or absence of power failure

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