JPS6333382U - - Google Patents
Info
- Publication number
- JPS6333382U JPS6333382U JP12474886U JP12474886U JPS6333382U JP S6333382 U JPS6333382 U JP S6333382U JP 12474886 U JP12474886 U JP 12474886U JP 12474886 U JP12474886 U JP 12474886U JP S6333382 U JPS6333382 U JP S6333382U
- Authority
- JP
- Japan
- Prior art keywords
- current detection
- switching
- switching transistor
- detection transformer
- current
- 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 7
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例に係る過電流検出回
路を備えたスイツチングレギユレータの構成の概
略を示した回路図、第２図は従来例の構成の概略
を示した回路図である。
ＴＲ１，ＴＲ２……スイツチングトランジスタ
、ＴＲ３，ＴＲ４……スイツチングトランジスタ
ＴＲ１，ＴＲ２のベース電流制御用のトランジス
タ、Ｔ１……コンバータトランス、Ｔ２……電流
検出用トランス、１０……発振回路。
Fig. 1 is a circuit diagram schematically showing the configuration of a switching regulator equipped with an overcurrent detection circuit according to an embodiment of the present invention, and Fig. 2 is a circuit diagram schematically showing the configuration of a conventional example. be. TR 1 , TR 2 ... Switching transistor, TR 3 , TR 4 ... Transistor for base current control of switching transistor TR 1 , TR 2 , T 1 ... Converter transformer, T 2 ... Current detection transformer, 10...Oscillation circuit.
Claims (1)
イツチングトランジスタの出力電流を検出する電
流検出用トランスと、 前記電流検出用トランスの二次側に接続されて
、前記２次側の端子電圧が所定値以上になつたと
きに導通するスイツチング素子と、 前記スイツチングトランジスタのベース電流を
制御する能動素子とを含み、 前記電流検出用トランスの２次側の端子電圧は
、前記スイツチングトランジスタを制御する発振
回路に駆動制御信号として与えられ、 前記スイツチング素子の出力は、前記能動素子
に制御信号として与えられることを特徴とするス
イツチングレギユレータの過電流検出回路。[Claims for Utility Model Registration] A current detection transformer connected to the primary side of a converter transformer to detect the output current of the switching transistor; and a current detection transformer connected to the secondary side of the current detection transformer, It includes a switching element that becomes conductive when the terminal voltage on the next side becomes equal to or higher than a predetermined value, and an active element that controls the base current of the switching transistor, and the terminal voltage on the secondary side of the current detection transformer is An overcurrent detection circuit for a switching regulator, characterized in that a drive control signal is applied to an oscillation circuit that controls the switching transistor, and an output of the switching element is applied as a control signal to the active element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12474886U JPS6333382U (en) | 1986-08-14 | 1986-08-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12474886U JPS6333382U (en) | 1986-08-14 | 1986-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333382U true JPS6333382U (en) | 1988-03-03 |
Family
ID=31017050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12474886U Pending JPS6333382U (en) | 1986-08-14 | 1986-08-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333382U (en) |
-
1986
- 1986-08-14 JP JP12474886U patent/JPS6333382U/ja active Pending