JPH02103790U - - Google Patents
Info
- Publication number
- JPH02103790U JPH02103790U JP848489U JP848489U JPH02103790U JP H02103790 U JPH02103790 U JP H02103790U JP 848489 U JP848489 U JP 848489U JP 848489 U JP848489 U JP 848489U JP H02103790 U JPH02103790 U JP H02103790U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- transformer
- bias winding
- circuit
- pulse width
- 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
- 238000004804 winding Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 4
- 238000003079 width control Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図と第２図は本考案の実施例を示すスイツ
チング電源装置の回路図、第３図と第４図は従来
例を示す回路図である。
３２……整流平滑回路、３３，３４……スイツ
チングトランス、３３ａ，４４ａ……一次巻線、
３３ｂ……バイアス巻線、３３ｃ，４４ｂ……二
次巻線、３４，４３……スイツチング素子、３５
，４７……整流ダイオード、３６，４９……平滑
コンデンサ、３７，４５……スイツチングレギユ
レータ集積回路、３８，４６……抵抗、３９，５
１……整流平滑回路、４０ａ，４０ｂ，５２ａ，
５２ｂ……出力端子、４１，５３……誤差検出回
路、４２，５３……信号媒体、４８……オン、オ
フ制御回路。
1 and 2 are circuit diagrams of a switching power supply device showing an embodiment of the present invention, and FIGS. 3 and 4 are circuit diagrams showing a conventional example. 32... Rectifier smoothing circuit, 33, 34... Switching transformer, 33a, 44a... Primary winding,
33b...Bias winding, 33c, 44b...Secondary winding, 34, 43...Switching element, 35
, 47... Rectifier diode, 36, 49... Smoothing capacitor, 37, 45... Switching regulator integrated circuit, 38, 46... Resistor, 39, 5
1... Rectifier smoothing circuit, 40a, 40b, 52a,
52b...Output terminal, 41, 53...Error detection circuit, 42, 53...Signal medium, 48...On/off control circuit.
Claims (1)
路を介して第１、第２のスイツチングトランスを
接続し、この第１のスイツチングトランスにバイ
アス巻線を設け、このバイアス巻線の出力によつ
て駆動される。第１のスイツチングトランスを制
御するパルス幅制御駆動機能をもつスイツチング
レギユレータ集積回路を設けるとともに、上記バ
イアス巻線よりダイオードとオン、オフ制御回路
を介して第２のスイツチングトランスを制御する
パルス幅制御駆動機能をもつスイツチングレギユ
レータ集積回路に接続し、各々のスイツチングト
ランスの２次側に整流平滑回路を設けて、それぞ
れの出力を得るように構成したスイツチング電源
装置。 First and second switching transformers are connected to the rectified and smoothed input via switching circuits, a bias winding is provided in the first switching transformer, and the transformer is driven by the output of the bias winding. Ru. A switching regulator integrated circuit having a pulse width control driving function is provided to control the first switching transformer, and the second switching transformer is controlled from the bias winding via a diode and an on/off control circuit. A switching power supply device connected to a switching regulator integrated circuit having a pulse width control drive function, and provided with a rectifying and smoothing circuit on the secondary side of each switching transformer to obtain respective outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP848489U JPH0724949Y2 (en) | 1989-01-27 | 1989-01-27 | Switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP848489U JPH0724949Y2 (en) | 1989-01-27 | 1989-01-27 | Switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02103790U true JPH02103790U (en) | 1990-08-17 |
| JPH0724949Y2 JPH0724949Y2 (en) | 1995-06-05 |
Family
ID=31214401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP848489U Expired - Lifetime JPH0724949Y2 (en) | 1989-01-27 | 1989-01-27 | Switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724949Y2 (en) |
-
1989
- 1989-01-27 JP JP848489U patent/JPH0724949Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0724949Y2 (en) | 1995-06-05 |