JPH048979U - - Google Patents
Info
- Publication number
- JPH048979U JPH048979U JP5016490U JP5016490U JPH048979U JP H048979 U JPH048979 U JP H048979U JP 5016490 U JP5016490 U JP 5016490U JP 5016490 U JP5016490 U JP 5016490U JP H048979 U JPH048979 U JP H048979U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- capacitor
- cycle rectification
- detection circuit
- overcurrent detection
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009499 grossing Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の一実施例を適用を示す回路図
、第２図は従来の過電流検出回路の適用を示す回
路図、第３図はカレントランスの一次側の電流と
二次側の電圧とを示す波形図である。
１，１ａ……過電流検出回路、２，２ａ……カ
レントトランス、３，３ａ……負荷抵抗、４……
オフサイクル整流用ダイオード、５……オフサイ
クル整流用コンデンサ、６……オンサイクル整流
用コンデンサ、７……オンサイクル整流用ダイオ
ード、８……制御回路、９……メイントランス、
１０……メインスイツチのＦＥＴ、１１，１２…
…整流ダイオード、１３……平滑チヨーク、１４
……平滑コンデンサ。
Fig. 1 is a circuit diagram showing the application of an embodiment of the present invention, Fig. 2 is a circuit diagram showing the application of a conventional overcurrent detection circuit, and Fig. 3 is a circuit diagram showing the application of a conventional overcurrent detection circuit. FIG. 3 is a waveform diagram showing voltage. 1, 1a... Overcurrent detection circuit, 2, 2a... Current transformer, 3, 3a... Load resistance, 4...
Diode for off-cycle rectification, 5... Capacitor for off-cycle rectification, 6... Capacitor for on-cycle rectification, 7... Diode for on-cycle rectification, 8... Control circuit, 9... Main transformer,
10... Main switch FET, 11, 12...
... Rectifier diode, 13 ... Smoothing diode, 14
...Smoothing capacitor.
Claims (1)
るピーク電流を検出するスイツチングレギユレー
タの過電流検出回路において、前記カレントトラ
ンスの２次側に負荷抵抗と、オンサイクル整流用
の第１のダイオードおよび第１のコンデンサと、
オフサイクル整流用の第２のダイオードおよび第
２のコンデンサとが接続されて成ることを特徴と
する過電流検出回路。 In an overcurrent detection circuit for a switching regulator that uses a current transformer to detect a peak current from a main switch, a load resistor is provided on the secondary side of the current transformer, a first diode for on-cycle rectification, and a first diode for on-cycle rectification. capacitor and
An overcurrent detection circuit characterized in that a second diode for off-cycle rectification and a second capacitor are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5016490U JPH048979U (en) | 1990-05-14 | 1990-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5016490U JPH048979U (en) | 1990-05-14 | 1990-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH048979U true JPH048979U (en) | 1992-01-27 |
Family
ID=31568479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5016490U Pending JPH048979U (en) | 1990-05-14 | 1990-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048979U (en) |
-
1990
- 1990-05-14 JP JP5016490U patent/JPH048979U/ja active Pending