JPH0414486U

JPH0414486U -

Info

Publication number: JPH0414486U
Application number: JP5623490U
Authority: JP
Priority date: 1990-05-29
Filing date: 1990-05-29
Publication date: 1992-02-05
Anticipated expiration: 2005-05-29
Also published as: JPH0756633Y2

Description

[Brief explanation of the drawing]

第１図は本考案の構成ブロツク図、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
第２図の回路の具体的構成図、第４図は本考案の
他の実施例の説明図である。第５図は従来装置の
構成ブロツク図、第６図は電源投入後の経過時間
ｔと起動用電圧Ｖｃｃの説明図である。１０……マスタ側コンバータ、１５……マスタ
制御回路、２０……スレーブ側コンバータ、２５
……スレーブ制御回路、３０……整流平滑化部、
４０……起動用電源、５０……起動用電圧監視部
、６０……スイツチ部。 Fig. 1 is a block diagram of the structure of the present invention, Fig. 2 is a block diagram of an embodiment of the present invention, Fig. 3 is a specific block diagram of the circuit of Fig. 2, and Fig. 4 is a block diagram of the circuit of the present invention. It is an explanatory view of an example of. FIG. 5 is a block diagram of the configuration of the conventional device, and FIG. 6 is an explanatory diagram of the elapsed time t after power-on and the starting voltage Vcc. 10... Master side converter, 15... Master control circuit, 20... Slave side converter, 25
...slave control circuit, 30 ... rectification smoothing section,
40...Power supply for starting, 50...Voltage monitoring section for starting, 60...Switch section.

Claims

[Claims for Utility Model Registration] A master-side converter 10, a master control circuit 15 that controls switching operations of this master-side converter, and at least one slave-side converter that performs switching operations in synchronization with this master-side converter. 20, a slave control circuit 25 that controls the switching operation of this slave-side converter, a DC voltage supply means 30 that supplies DC voltage to these converters, and whose output voltage increases as the power is turned on and then remains constant; a starting power source 40 that supplies operating power to the control circuit using the output voltage of the supply means;
A multi-switching power supply device comprising: a startup voltage monitoring unit 50 that determines whether the voltage supplied by the startup power source has become higher than the startup start voltage of the master control circuit; and the startup power source and each control. inserted between the circuits,
A starting circuit for a multiple switching power supply, comprising: a switch section 60 that turns on when the starting voltage monitoring section determines that the starting voltage has become higher than a starting starting voltage.