JPH02129188U - - Google Patents
Info
- Publication number
- JPH02129188U JPH02129188U JP9264088U JP9264088U JPH02129188U JP H02129188 U JPH02129188 U JP H02129188U JP 9264088 U JP9264088 U JP 9264088U JP 9264088 U JP9264088 U JP 9264088U JP H02129188 U JPH02129188 U JP H02129188U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- voltage dividing
- circuit
- output
- converter
- 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 3
- 238000009499 grossing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案に係るスイツチング電源装置
の一例を示す構成図、第２図は同装置の他の実施
例を示す構成図、第３図は従来のスイツチング電
源装置を示す構成図、第４図は出力電流が過電流
動作点付近となる場合の出力電流・出力電圧特性
図、第５図は過電流動作点を定格値以下に抑える
場合の出力電流・出力電圧特性図である。
９，１０……整流・平滑回路、１１，１２……
ＤＣ−ＤＣコンバータ、２７，２８……分圧回路
、３５，３６……電圧変動検出回路、ａ，ｂ……
分圧点。
FIG. 1 is a block diagram showing an example of a switching power supply device according to this invention, FIG. 2 is a block diagram showing another embodiment of the same device, FIG. 3 is a block diagram showing a conventional switching power supply device, and FIG. The figure is an output current/output voltage characteristic diagram when the output current is near the overcurrent operating point, and FIG. 5 is the output current/output voltage characteristic diagram when the overcurrent operating point is suppressed to below the rated value. 9, 10... Rectifier/smoothing circuit, 11, 12...
DC-DC converter, 27, 28... Voltage dividing circuit, 35, 36... Voltage fluctuation detection circuit, a, b...
Partial pressure point.
Claims (1)
平滑回路と、上記整流・平滑回路にそれぞれ接続
されて、平滑出力をスイツチング素子のスイツチ
ング動作の繰り返しで交流化してトランスの１次
側に印加するとともに、該トランスの２次側に生
起された交流電圧を直流電圧に変換して出力する
複数のＤＣ−ＤＣコンバータと、上記ＤＣ−ＤＣ
コンバータの各出力端に並列接続された複数の分
圧回路と、上記ＤＣ−ＤＣコンバータの各出力端
に並列接続されて、分圧回路の分圧点電位と所定
電位との比較差信号を上記スイツチング素子の制
御回路に送出する複数の電圧変動検出回路とを備
え、上記電圧変動検出回路の各入力端同士を接続
するとともに、該入力端を少なくとも１つの分圧
回路の分圧点に接続したことを特徴とするスイツ
チング電源装置。 Multiple rectifiers that rectify and smooth the AC input voltage.
The smoothing circuit is connected to the rectifying/smoothing circuit, and the smoothed output is converted into alternating current by repeating the switching operation of the switching element and applied to the primary side of the transformer, and the alternating current generated on the secondary side of the transformer is a plurality of DC-DC converters that convert voltage into DC voltage and output the DC-DC converter;
A plurality of voltage dividing circuits are connected in parallel to each output terminal of the converter, and a plurality of voltage dividing circuits are connected in parallel to each output terminal of the DC-DC converter, and a comparison difference signal between the voltage dividing point potential of the voltage dividing circuit and a predetermined potential is generated as described above. a plurality of voltage fluctuation detection circuits for sending output to the control circuit of the switching element, each input terminal of the voltage fluctuation detection circuit is connected to each other, and the input terminal is connected to a voltage dividing point of at least one voltage dividing circuit. A switching power supply device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9264088U JPH02129188U (en) | 1988-07-12 | 1988-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9264088U JPH02129188U (en) | 1988-07-12 | 1988-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02129188U true JPH02129188U (en) | 1990-10-24 |
Family
ID=31642052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9264088U Pending JPH02129188U (en) | 1988-07-12 | 1988-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129188U (en) |
-
1988
- 1988-07-12 JP JP9264088U patent/JPH02129188U/ja active Pending
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