JPS5832515U

JPS5832515U - switching circuit

Info

Publication number: JPS5832515U
Application number: JP12635181U
Authority: JP
Inventors: 南村　和良
Original assignee: 日本電気株式会社
Priority date: 1981-08-26
Filing date: 1981-08-26
Publication date: 1983-03-03

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の降圧式スイッチングレギュレーターの回
路図、第２図は従来のスイッチング素子の駆動法の回路
図、第３図は本考案の実施例の回路図、第４図ａ、　’
ｂ、　　ｃは第３図における駆動波形図である。図にお
いて、１・・・・・・入力端子、２，２′・・・・・・駆動回
路、３・・・・・・出力端子、ＴＲ１，ＴＲ１’・・・
・・・スイッチングトランジスタ、ＴＲ２・・開駆動ト
ランジスタ、Ｌ戸開エネルギー蓄積用チョークコイル、
Ｄ、・・・・・・ダイオード、Ｔ□、Ｔ１′・・・・・
・トランス、Ｔ・・・・・・スイッチングの周期、ｔａ
・・・・・・ＴＲ１の駆動信号の一周期のオン時間、ｔ
ｂ・・・・・・ＴＲ１’の駆動信号の一周期のオン時間
、である。Fig. 1 is a circuit diagram of a conventional step-down switching regulator, Fig. 2 is a circuit diagram of a conventional switching element driving method, Fig. 3 is a circuit diagram of an embodiment of the present invention, and Fig. 4 a, '
b and c are drive waveform diagrams in FIG. 3. In the figure, 1... Input terminal, 2, 2'... Drive circuit, 3... Output terminal, TR1, TR1'...
...Switching transistor, TR2... Open drive transistor, L door open energy storage choke coil,
D,...Diode, T□, T1'...
・Transformer, T...Switching period, ta
......On time of one cycle of the drive signal of TR1, t
b: ON time of one cycle of the drive signal of TR1'.

Claims

[Scope of utility model registration request]

In a switching circuit, a switching element and a coil are inserted in series between input and output terminals, and the switching of this switching element is controlled to obtain a constant voltage at the output.
The switching element is characterized in that n pieces (where n is an integer of 2 or more) of the switching elements are connected in parallel, and that the switching element is provided with a drive circuit in which each switching element is switched by shifting the phase of the switching cycle by 2τ/n. switching circuit.