JPH0260442U - - Google Patents
Info
- Publication number
- JPH0260442U JPH0260442U JP13971688U JP13971688U JPH0260442U JP H0260442 U JPH0260442 U JP H0260442U JP 13971688 U JP13971688 U JP 13971688U JP 13971688 U JP13971688 U JP 13971688U JP H0260442 U JPH0260442 U JP H0260442U
- Authority
- JP
- Japan
- Prior art keywords
- current
- protection circuit
- transformer
- circuit
- detection resistor
- 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 4
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案によるスイツチングレギユレー
タの過電流保護回路の一実施例を示す結線図、第
２図は従来のスイツチングレギユレータの過電流
保護回路の一例を示す結線図、第３図は出力端子
短絡による電流検出抵抗の両端の時間―電圧曲線
である。
２：変圧器、３：主トランジスタ、４：制御回
路、５：電流検出抵抗、６：保護回路、２４：コ
イル。
Fig. 1 is a wiring diagram showing an example of an overcurrent protection circuit for a switching regulator according to the present invention; Fig. 2 is a wiring diagram showing an example of an overcurrent protection circuit for a conventional switching regulator; Figure 3 shows the time-voltage curve across the current detection resistor when the output terminal is short-circuited. 2: Transformer, 3: Main transistor, 4: Control circuit, 5: Current detection resistor, 6: Protection circuit, 24: Coil.
Claims (1)
が一次巻線に接続された変圧器と、この変圧器の
二次電圧を整流した出力回路に直列接続された電
流検出抵抗と、この電流検出抵抗の電流が所定値
を超えると前記制御回路を介して前記電流を所定
値に抑制する保護回路とを備えたスイツチングレ
ギユレータの過電流保護回路において、前記電流
検出抵抗と直列に接続されたコイルを設けたこと
を特徴とするスイツチングレギユレータの過電流
保護回路。 A transformer with a main switching element connected to the primary winding that controls DC current intermittently by a control circuit, a current detection resistor connected in series to an output circuit that rectifies the secondary voltage of this transformer, and this current detection resistor. an overcurrent protection circuit for a switching regulator, comprising: a protection circuit that suppresses the current to a predetermined value via the control circuit when the current exceeds a predetermined value; An overcurrent protection circuit for a switching regulator featuring a coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13971688U JPH0260442U (en) | 1988-10-26 | 1988-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13971688U JPH0260442U (en) | 1988-10-26 | 1988-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0260442U true JPH0260442U (en) | 1990-05-02 |
Family
ID=31403236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13971688U Pending JPH0260442U (en) | 1988-10-26 | 1988-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0260442U (en) |
-
1988
- 1988-10-26 JP JP13971688U patent/JPH0260442U/ja active Pending