JPS60129891U

JPS60129891U - switching regulator

Info

Publication number: JPS60129891U
Application number: JP1608584U
Authority: JP
Inventors: 丹羽　重夫
Original assignee: 株式会社富士通ゼネラル
Priority date: 1984-02-09
Filing date: 1984-02-09
Publication date: 1985-08-31

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図は本考案によるスイッチングレギュレータの一実
施例を示す電気回路図、第２図は各部の波形図である。　　　　　　　　　　　１１・・・直流電源入力端子、
２・・・スイッチング素子、３・・・チョークコイル、
４・・・出力端子、５・・・転流ダイオード、６・・・
コンデンサ、？、８．９・・・抵　　　　　、抗、１０
・・・検出電圧入力端子、１１・・・抵抗、１２・・・
コンデンサ、１３・・・遅延回路、１４・・・電圧比較
用トランジスタ、１５・・・基準電圧入力端子、１６ど
・・補助トランジスタ、１７・・・抵抗、１８・・・負
荷。FIG. 1 is an electric circuit diagram showing an embodiment of a switching regulator according to the present invention, and FIG. 2 is a waveform diagram of each part. 11...DC power input terminal,
2... Switching element, 3... Choke coil,
4... Output terminal, 5... Commutation diode, 6...
Capacitor? , 8.9...resistance, resistance, 10
...Detection voltage input terminal, 11...Resistor, 12...
Capacitor, 13...Delay circuit, 14...Voltage comparison transistor, 15...Reference voltage input terminal, 16...Auxiliary transistor, 17...Resistor, 18...Load.

Claims

[Scope of utility model registration request]

(1) Convert the DC input voltage into a pulse by turning on and off the switching element, accumulate this pulse voltage in the choke coil, and turn on the switching element so that the accumulated energy becomes the target output voltage. , in a switching regulator that controls off, an input terminal for a detection voltage corresponding to the output voltage and an input terminal for a preset reference voltage are coupled to one transistor for voltage comparison; A switching regulator characterized in that the switching element is turned on and off when turned on and off.

(2) The voltage comparison transistor is of a PNP type, and the base of the transistor is connected to the input terminal of the detection voltage, and the emitter is connected to the input terminal of the reference voltage. switching regulator.

(3) The switching regulator according to claim 2, wherein the collector of the voltage comparison transistor is grounded via a resistor and coupled to the switching element via an auxiliary transistor.

(4) The switching regulator according to claim 2, wherein a delay circuit consisting of a resistor and a capacitor is interposed between the input terminal of the detected voltage and the base of the voltage comparison transistor.