JPS5981289U - Abnormality protection circuit for switching regulator type power supply equipment - Google Patents
Abnormality protection circuit for switching regulator type power supply equipmentInfo
- Publication number
- JPS5981289U JPS5981289U JP17759482U JP17759482U JPS5981289U JP S5981289 U JPS5981289 U JP S5981289U JP 17759482 U JP17759482 U JP 17759482U JP 17759482 U JP17759482 U JP 17759482U JP S5981289 U JPS5981289 U JP S5981289U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- amplifier
- type power
- switching regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
- Protection Of Static Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のスイッチングレギュレータ式電源装置に
おけるレギュレータＩＣの周辺回路構成を示す回路ブロ
ック図、第２図は本考案の一実施例を示す回路ブロック
図である。
１００・・・レギュレータＩＣ（パルス幅変調制御回路
素子） 、ＡＶ、 Ａ、・・・増幅器、ＰＷＭ・・・パ
ルス幅変調回路、Ｒ，、Ｒ２−Ｒ，、Ｒｏ、 Ｒ，−・
・抵抗、Ｃｃ。
ＧＴ、 Ｃ，・・・コンデンサ、Ｄ・・・ダイオード、
ＣＲ１・・・サイリスク。FIG. 1 is a circuit block diagram showing a peripheral circuit configuration of a regulator IC in a conventional switching regulator type power supply device, and FIG. 2 is a circuit block diagram showing an embodiment of the present invention. 100...Regulator IC (pulse width modulation control circuit element), AV, A,...Amplifier, PWM...Pulse width modulation circuit, R,, R2-R,, Ro, R,-...
・Resistance, Cc. GT, C,... Capacitor, D... Diode,
CR1... Cyrisk.
Claims (2)
ら増幅器の共通出力信号を受けてパルス幅制御を行なう
パルス幅変調回路を有してなる集積回路素子を用い：前
記第１の増幅器に出力電圧の一部を供給して定電圧制御
を行なうスイッチングレギュレータ式電源装置゛におい
て、異常発生信号を受けて特定の保持状態とな゛る保護
用保持回路と、この保護用保持回路の保持信号を前記第
２の増幅器に供給し、前記保持信号が特定の保持状態と
なった際に、前記第２の増幅器の出力を前記第１の増幅
器の出力より優先させる保護用制御回路とを具備してな
ることを特徴としたスイッチングレギュレータ式電源装
置の異常保護回路。(1) Using an integrated circuit element comprising first and second amplifiers for pulse width control, and a pulse width modulation circuit that receives a common output signal of these amplifiers and performs pulse width control: In a switching regulator type power supply device that performs constant voltage control by supplying part of the output voltage to an amplifier, there is a protective holding circuit that enters a specific holding state in response to an abnormality signal, and a protective holding circuit that a protection control circuit that supplies a hold signal to the second amplifier and gives priority to the output of the second amplifier over the output of the first amplifier when the hold signal reaches a specific hold state; An abnormality protection circuit for a switching regulator type power supply device.
イリスタの保持電流を前記集積回路素子の基準電圧出力
端子より供給する実用新案登録請求の範囲第１項記載の
スイッチングレギュレータ式電源装置の異常保護回路。 、（３）前記第２の増幅器の一方の入力端を前記第１の
増幅器の比較基準電圧入力端子に接続し、他方の入力端
を前記保護用保持回路の出力電流路に接続した実用新案
登録請求の範囲第１項記載のスイッチングレギュレータ
式電源装置の異常保護回路。(2) Abnormality protection of the switching regulator type power supply device according to claim 1, in which a thyristor is used in the protective holding circuit, and the holding current of the thyristor is supplied from the reference voltage output terminal of the integrated circuit element. circuit. (3) Utility model registration in which one input terminal of the second amplifier is connected to the comparison reference voltage input terminal of the first amplifier, and the other input terminal is connected to the output current path of the protective holding circuit. An abnormality protection circuit for a switching regulator type power supply device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17759482U JPS5981289U (en) | 1982-11-24 | 1982-11-24 | Abnormality protection circuit for switching regulator type power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17759482U JPS5981289U (en) | 1982-11-24 | 1982-11-24 | Abnormality protection circuit for switching regulator type power supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5981289U true JPS5981289U (en) | 1984-06-01 |
Family
ID=30385791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17759482U Pending JPS5981289U (en) | 1982-11-24 | 1982-11-24 | Abnormality protection circuit for switching regulator type power supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5981289U (en) |
-
1982
- 1982-11-24 JP JP17759482U patent/JPS5981289U/en active Pending
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