JPS6241382U

JPS6241382U -

Info

Publication number: JPS6241382U
Application number: JP13214185U
Authority: JP
Priority date: 1985-08-29
Filing date: 1985-08-29
Publication date: 1987-03-12

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の複合出力スイツチ
ング電源装置を示す構成図、第２図はこの実施例
の複合出力スイツチング電源装置の動作波形特性
図、第３図は従来例の複合出力スイツチング電源
装置を示す構成図、第４図は従来例の複合出力ス
イツチング電源装置の動作波形特性図である。１……コンバータトランス、２，３……スイツ
チングトランジスタ、３，４，８，９……整流ダ
イオード、６，１０……チヨークコイル、７，１
１……コンデンサ、１２，１３……誤差増幅器、
１４，１５……パルス幅変調器、１６，１７……
ドライバ、Ｎ_１……一次巻線、Ｎ_２，Ｎ_３……二
次巻線。 Fig. 1 is a configuration diagram showing a composite output switching power supply device according to an embodiment of the present invention, Fig. 2 is an operating waveform characteristic diagram of the composite output switching power supply device according to this embodiment, and Fig. 3 is a conventional composite output switching power supply device. FIG. 4 is a block diagram showing the power supply device, and is an operating waveform characteristic diagram of a conventional composite output switching power supply device. 1... Converter transformer, 2, 3... Switching transistor, 3, 4, 8, 9... Rectifier diode, 6, 10... Chiyoke coil, 7, 1
1... Capacitor, 12, 13... Error amplifier,
14, 15... Pulse width modulator, 16, 17...
Driver, _N1 ...Primary winding, _N2 , _N3 ...Secondary winding.

Claims

[Scope of utility model registration request]

a primary switching means that switches the current on the primary winding side of the converter transformer to produce a pulse current; and a plurality of DC voltage output means that rectifies and outputs the pulse voltage induced on the secondary winding side of the converter transformer. , a secondary switching means for switching the current flowing through at least one of the plurality of DC voltage output means, and a secondary switching means that takes in the output power of the DC voltage output means, compares this output voltage with a reference voltage, an error signal output means for outputting a potential difference between as an error signal; a pulse signal output means for inputting a triangular wave and the error signal to generate and output a pulse signal with a pulse width corresponding to the error signal; control means for taking in every other pulse signal among the pulse signals output from the output means and feeding it back to the switching side of the secondary switching means to perform constant output voltage control; and output from the pulse signal output means. and a reverse bias signal applying means for taking in the remaining pulse signals of the pulse signals and applying a reverse bias signal to every other pulse signal at a timing corresponding to this signal.