JPS5870091U - Switching regulator overcurrent detection circuit - Google Patents
Switching regulator overcurrent detection circuitInfo
- Publication number
- JPS5870091U JPS5870091U JP16397581U JP16397581U JPS5870091U JP S5870091 U JPS5870091 U JP S5870091U JP 16397581 U JP16397581 U JP 16397581U JP 16397581 U JP16397581 U JP 16397581U JP S5870091 U JPS5870091 U JP S5870091U
- Authority
- JP
- Japan
- Prior art keywords
- switching regulator
- detection circuit
- overcurrent detection
- current transformer
- circuit
- 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.)
- Granted
Links
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (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) [Summary] 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の一１例を示
す回路図、第２図にそのコレクタ電流及びコレクターエ
ミッタ間電圧波形図、第３図は従来回路の一例を示す回
路図、第４図はその動作波形図、第５図は実験回路図、
第６図はその動作波形図、第７図は他の実験回路図、第
８図は本考案の一実施例を示す回路図、第９図はその動
作波形図である。
１・・・整流平滑回路、２・・・制御回路、３・・・コ
ンパレータ、Ｑ・・・トランジスタ、Ｒ□・・・終端抵
抗、Ｄ□・・・ダイオード、Ｒ２・・・抵抗、Ｄ２・・
・第２のダイオード、Ｃ・・・コンデンサ。Fig. 1 is a circuit diagram showing an example of a conventional switching regulator, Fig. 2 is a collector current and collector-emitter voltage waveform diagram, Fig. 3 is a circuit diagram showing an example of a conventional circuit, and Fig. 4 is its collector current and collector-emitter voltage waveform diagram. Operating waveform diagram, Figure 5 is an experimental circuit diagram,
FIG. 6 is an operational waveform diagram, FIG. 7 is another experimental circuit diagram, FIG. 8 is a circuit diagram showing an embodiment of the present invention, and FIG. 9 is an operational waveform diagram. 1... Rectifier and smoothing circuit, 2... Control circuit, 3... Comparator, Q... Transistor, R□... Termination resistor, D□... Diode, R2... Resistor, D2...・
・Second diode, C... capacitor.
Claims (1)
スと、該カレントトランス出力に接続される終端抵抗と
、該終端抵抗に接続されるダイオードと抵抗の組合せ回
路と、該抵抗と並列に接続されるコンデンサとを備え、
該コンデンサの端子間電圧を検出して過電流を検出する
回路において、カレントトランスとその終端抵抗との間
に第２のダイ８オードを挿入することを特徴とするスイ
ッチングレギュレータの過電流検出回路。A current transformer installed at a location where overcurrent is to be detected, a terminating resistor connected to the output of the current transformer, a combination circuit of a diode and a resistor connected to the terminating resistor, and a capacitor connected in parallel with the resistor. and
An overcurrent detection circuit for a switching regulator, characterized in that a second diode is inserted between a current transformer and its terminating resistor in the circuit for detecting overcurrent by detecting the voltage between the terminals of the capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16397581U JPS5870091U (en) | 1981-11-02 | 1981-11-02 | Switching regulator overcurrent detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16397581U JPS5870091U (en) | 1981-11-02 | 1981-11-02 | Switching regulator overcurrent detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5870091U true JPS5870091U (en) | 1983-05-12 |
| JPS6219103Y2 JPS6219103Y2 (en) | 1987-05-15 |
Family
ID=29956248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16397581U Granted JPS5870091U (en) | 1981-11-02 | 1981-11-02 | Switching regulator overcurrent detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5870091U (en) |
-
1981
- 1981-11-02 JP JP16397581U patent/JPS5870091U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219103Y2 (en) | 1987-05-15 |
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