JPS59141490U

JPS59141490U - Switching regulator circuit

Info

Publication number: JPS59141490U
Application number: JP3426583U
Authority: JP
Inventors: 祐一郎河村
Original assignee: 三菱電機株式会社
Priority date: 1983-03-10
Filing date: 1983-03-10
Publication date: 1984-09-21

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図は従来の回路を示す接続図、第２図は第１図の回
路の特性を示す特性図、第３図はこの考案の一実施例を
示す接続図、第４図は第３図の回路の特性を示す特性図
である。１・・・・・・直流電源、Ｔ・・・・・・変圧器、Ｗ□
、Ｗ２・・・・・・第１、第２の一次巻線、Ｑ、、　Ｑ
２・・・・・・第１、第２のスイッチングトランジスタ
、ＣＴ１．ＣＴ２・・間第１、第２の変流器、ＤＲＩ、
ＤＲ２・・・・・・第１、第２の駆動回路、Ｄ□、　Ｄ
２．　Ｄ３．　Ｄ４・・・・・・クランプ回路、Ｄ３．
　Ｄ６・・・・・・逆流阻止ダイオード。なお、図中間
　　−一符号は同−又は相当部分を示す。Fig. 1 is a connection diagram showing a conventional circuit, Fig. 2 is a characteristic diagram showing the characteristics of the circuit in Fig. 1, Fig. 3 is a connection diagram showing an embodiment of this invention, and Fig. 4 is a diagram showing the characteristics of the circuit in Fig. 1. FIG. 3 is a characteristic diagram showing the characteristics of the circuit. 1...DC power supply, T...Transformer, W□
, W2...First and second primary windings, Q,, Q
2...First and second switching transistors, CT1. CT2...first and second current transformers, DRI,
DR2...First and second drive circuits, D□, D
2. D3. D4... Clamp circuit, D3.
D6...Reverse current blocking diode. Note that the numerals in the middle of the figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a first primary current circuit connected from the positive terminal of the DC power supply to the collector of the first switching transistor via the first primary winding of the transformer; and from the positive terminal of the DC power supply to the transformer. a second primary current circuit connected to the collector of the second switching transistor via a second primary winding wound with a magnetization direction opposite to that of the first primary winding; a first current transformer having a primary winding connected from the emitter of the switching transistor to the negative terminal of the DC power supply; and a primary winding connected from the emitter of the second switching transistor to the negative terminal of the DC power supply. a second current transformer having a line, a first drive circuit for driving the base of the first switching transistor, a second drive circuit for driving the base of the second switching transistor, and a second current transformer for driving the base of the first switching transistor; The lowest value of the collector voltage and the lowest value of the base voltage of the switching transistor are respectively clamped to the voltage value of the output point of the first drive circuit, and the lowest value of the collector voltage and the lowest value of the base voltage of the second switching transistor are clamped to the voltage value of the output point of the first drive circuit. a clamp circuit that clamps each value to a voltage value at an output point of the second drive circuit; and a current that is determined by the magnetic energy stored in the first current transformer when the first switching transistor is in the on state. a secondary winding of the first current transformer connected to flow from the base to the emitter when the first switching transistor is in an off state;
The second switching transistor is connected to cause a current determined by the magnetic energy stored in the second current transformer when the transformer is in the on state to flow from its base to the emitter when the second switching transistor is in the off state. and a secondary winding of the second current transformer.