JPH04180U - - Google Patents
Info
- Publication number
- JPH04180U JPH04180U JP3892690U JP3892690U JPH04180U JP H04180 U JPH04180 U JP H04180U JP 3892690 U JP3892690 U JP 3892690U JP 3892690 U JP3892690 U JP 3892690U JP H04180 U JPH04180 U JP H04180U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- switching
- control circuit
- control signal
- frequency
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
- 238000003079 width control Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は上記目的を達成する本考案を説明する
原理的ブロツク図、第２図は本考案の一実施例を
示す構成ブロツク図、第３図は入力電圧Ｅｉｎと
スイツチング周波数の関係図、第４図は入力電
圧Ｅｉｎとオン時間Ｔｏｎの関係図である。第５
図は従来装置の構成ブロツク図である。
１０……ＤＣ−ＤＣコンバータ部、２０……パ
ルス幅制御回路、３０……電圧・周波数変換部。
FIG. 1 is a principle block diagram illustrating the present invention that achieves the above object, FIG. 2 is a configuration block diagram showing an embodiment of the present invention, FIG. 3 is a diagram showing the relationship between input voltage Ein and switching frequency, and FIG. FIG. 4 is a diagram showing the relationship between the input voltage Ein and the on-time Ton. Fifth
The figure is a block diagram of a conventional device. 10...DC-DC converter section, 20... Pulse width control circuit, 30... Voltage/frequency conversion section.
Claims (1)
加し、この一次巻線に接続されたスイツチング素
子Ｑにより電流をオンオフし、二次巻線に誘起さ
れるスイツチング信号を整流平滑化して所定の直
流電圧Ｅｏｕｔを負荷側に出力するＤＣ−ＤＣコ
ンバータ部１０と、 この出力電圧を所定電圧に安定化するオンオフ
制御信号を前記スイツチング素子に送る制御回路
２０と、 前記直流入力電圧を入力し、この入力電圧が変
化すると前記制御回路の出力する制御信号のスイ
ツチング周波数を変化させる周波数制御信号を前
記制御回路に送る電圧・周波数変換部３０と、を
具備することを特徴とするスイツチング電源装置
。[Claims for Utility Model Registration] A DC input voltage Ein is applied to the primary winding of the transformer, a switching element Q connected to the primary winding turns the current on and off, and a switching signal induced in the secondary winding is generated. a DC-DC converter section 10 that rectifies and smoothes and outputs a predetermined DC voltage Eout to the load side; a control circuit 20 that sends an on/off control signal to the switching element to stabilize this output voltage to a predetermined voltage; and the DC input. The present invention is characterized by comprising a voltage/frequency conversion section 30 that inputs a voltage and sends to the control circuit a frequency control signal that changes the switching frequency of the control signal output from the control circuit when the input voltage changes. Switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3892690U JPH04180U (en) | 1990-04-11 | 1990-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3892690U JPH04180U (en) | 1990-04-11 | 1990-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04180U true JPH04180U (en) | 1992-01-06 |
Family
ID=31547370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3892690U Pending JPH04180U (en) | 1990-04-11 | 1990-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04180U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004304885A (en) * | 2003-03-28 | 2004-10-28 | Sony Corp | Switching power supply |
| CN100413194C (en) * | 2002-07-26 | 2008-08-20 | 富士电机株式会社 | Method for controlling DC-DC converter |
| JP2009195101A (en) * | 2008-01-16 | 2009-08-27 | Fujitsu Microelectronics Ltd | Power supply apparatus and power supply method |
-
1990
- 1990-04-11 JP JP3892690U patent/JPH04180U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413194C (en) * | 2002-07-26 | 2008-08-20 | 富士电机株式会社 | Method for controlling DC-DC converter |
| JP2004304885A (en) * | 2003-03-28 | 2004-10-28 | Sony Corp | Switching power supply |
| JP2009195101A (en) * | 2008-01-16 | 2009-08-27 | Fujitsu Microelectronics Ltd | Power supply apparatus and power supply method |
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