JPS6127490U

JPS6127490U - switching regulator

Info

Publication number: JPS6127490U
Application number: JP11168584U
Authority: JP
Inventors: 秀夫上岡
Original assignee: ティーディーケイ株式会社
Priority date: 1984-07-25
Filing date: 1984-07-25
Publication date: 1986-02-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ａ及びｂは本考案によるスイッチングレギュレー
タの実施例を示す回路図、第２図は従来のスイッチング
レギュレータの回路歯である。６・・・トランス、７・・・スイッチング素子、８・・
・起動回路、９・・・制御回路、１０・・・出力整流平
滑回路、６１乃至６３・・・巻。1A and 1B are circuit diagrams showing an embodiment of a switching regulator according to the present invention, and FIG. 2 is a circuit diagram of a conventional switching regulator. 6...Transformer, 7...Switching element, 8...
- Startup circuit, 9... Control circuit, 10... Output rectification and smoothing circuit, 61 to 63... Volumes.

Claims

[Scope of utility model registration request]

A transformer, a switching element that switches a DC voltage applied to a primary winding of the transformer, a rectifying and smoothing circuit that rectifies and smoothes a voltage generated in a secondary winding of the transformer and applies the rectified and smoothed voltage to a load; A control circuit that drives and controls the switching element according to the output voltage of the rectifying and smoothing circuit, a starting circuit that supplies starting power to the control circuit when power is turned on, and a control circuit that is provided in the transformer and that uses the starting circuit. In a switching regulator having an auxiliary winding that supplies operating power to the control circuit after startup, the startup circuit is connected between DC input lines, and when the DC input reaches a predetermined level or higher, A switching regulator characterized in that it conducts and charges at a predetermined time constant, and that the charging voltage starts the control circuit.