JPH0288474U - - Google Patents
Info
- Publication number
- JPH0288474U JPH0288474U JP16697088U JP16697088U JPH0288474U JP H0288474 U JPH0288474 U JP H0288474U JP 16697088 U JP16697088 U JP 16697088U JP 16697088 U JP16697088 U JP 16697088U JP H0288474 U JPH0288474 U JP H0288474U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input
- switching regulator
- turned
- output
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
第１図は本考案における一実施例のブロツク図
、第２図は第１図の一部の部分ブロツク図である
。
Ａ……降圧型スイツチングレギユレータ、Ｂ…
…スイツチ回路、Ｃ……電圧検出回路。
FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a partial block diagram of a part of FIG. 1. A...Step-down switching regulator, B...
...Switch circuit, C...Voltage detection circuit.
Claims (1)
の時間の比で直流出力電圧をコントロールして定
電圧を出力する降圧型スイツチングレギユレータ
において、上記降圧型スイツチングレギユレータ
の入力端と出力端の間にオンすると入力端と出力
端を短絡するスイツチ回路を設けると共に、その
入力端に電圧検出回路を接続し、その電圧検出回
路は、常時はスイツチ回路をオフし、上記降圧型
スイツチングレギユレータが作動不能となる直流
入力電圧と直流出力電圧との電圧差となるまで低
下した直流入力電圧を検出した場合、上記スイツ
チ回路をオンすることを特徴とした電源装置。 In a step-down switching regulator that outputs a constant voltage by turning on and off the DC input voltage and controlling the DC output voltage according to the ratio of the on/off time, the input terminal of the step-down switching regulator is A switch circuit that short-circuits the input and output terminals when turned on is provided between the and output terminals, and a voltage detection circuit is connected to the input terminal of the switch circuit. A power supply device characterized in that when a switching regulator detects a DC input voltage that has dropped to a voltage difference between a DC input voltage and a DC output voltage that makes it inoperable, the switching circuit is turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16697088U JPH0288474U (en) | 1988-12-24 | 1988-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16697088U JPH0288474U (en) | 1988-12-24 | 1988-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0288474U true JPH0288474U (en) | 1990-07-12 |
Family
ID=31454840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16697088U Pending JPH0288474U (en) | 1988-12-24 | 1988-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0288474U (en) |
-
1988
- 1988-12-24 JP JP16697088U patent/JPH0288474U/ja active Pending