KR950016456A

KR950016456A - Zero voltage switching resonant converter

Info

Publication number: KR950016456A
Application number: KR1019930024241A
Authority: KR
Inventors: 전달영; 송복기
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1993-11-15
Filing date: 1993-11-15
Publication date: 1995-06-17
Also published as: KR960007997B1

Abstract

제1 및 제2전원 공급라인을 통해 공급되는 직류전압을 받은 전원 전압 안정화 회로와, 상기 전압 안정화 회로에 따라서 제1구형파 하강에지보다 소정구간 앞서 발현되는 제2구형파를 생성하는 구공신호 발생회로와, 상기 제1 및 제2구형파를 받는 제1 및 제2스위칭수단과, 제1스위칭 수단과 상기 전원 전압 안정화 회로간에 연결된 구동전류 차단회로와, 상기 제1 및 제2스위칭수단의 출력을 받는 제1권선과, 스위칭 신호를 번갈아 출력하는 제2, 제3권선과 회생된 전류를 상기 제1권선에 출력하는 제4권선을 갖는 트랜스포머와, 상기 트랜스포머의 출력에 각각 연결된 부하구동 스위칭 수단과, 스위칭된 신호에 따라 부하에 고주파 스위칭 신호를 전달하는 인덕터와, 제2전원공급라인과 상기 제1 및 제2스위칭수단에 각각 병렬로 연결된 제1, 제2다이오드와, 상기 다이오드와 제1권선을 연결하고 이 연결점과 상기 전원전압 안정화 회로를 연결하는 제3, 제4다이오드로 구성된 것을 특정으로 하는 영전압스위칭 방식의 공진형 컨버터에 관한 것.A power supply voltage stabilization circuit that receives a DC voltage supplied through the first and second power supply lines, and a hole signal generation circuit for generating a second square wave that is expressed a predetermined period ahead of the first square wave falling edge according to the voltage stabilization circuit; First and second switching means for receiving the first and second square waves, a driving current blocking circuit connected between the first switching means and the power supply voltage stabilization circuit, and a first receiving means for receiving the output of the first and second switching means. A transformer having a first winding, a second winding for alternately outputting a switching signal, and a fourth winding for outputting a regenerated current to the first winding; a load drive switching means connected to an output of the transformer; An inductor for transmitting a high frequency switching signal to a load in accordance with the received signal, first and second diodes connected in parallel to a second power supply line and the first and second switching means, respectively, A zero-voltage switching type resonant converter characterized by comprising a third diode and a fourth diode connecting a conventional diode and a first winding and connecting the connection point and the power supply voltage stabilization circuit.

Description

Zero voltage switching resonant converter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

제2도는 제1도의 전원 전압 안정화 회로도.2 is a power supply voltage stabilization circuit diagram of FIG.

제3도는 제1도의 스위칭부의 상세도.3 is a detailed view of the switching part of FIG.

제4도는 제1도의 각부 파형도.4 is a waveform diagram of each part of FIG.

제5도는 제어회로부에 대한 블록 구성도.5 is a block diagram of a control circuit unit.

제6도는 제5도의 톱니파 발생회로도.6 is a sawtooth wave generating circuit diagram of FIG.

제7도는 제5도의 구형파 발생회로도.7 is a square wave generating circuit diagram of FIG.

제8도는 제5도의 구동전류 차단회로도.8 is a circuit diagram illustrating a driving current blocking circuit of FIG.

Claims

A power supply voltage stabilization circuit that receives a DC voltage supplied through the first and second power supply lines, and a drive signal generation circuit that generates a second square wave that is expressed a predetermined period ahead of the first square wave falling edge according to the voltage stabilization circuit; First and second switching means receiving the first and second square waves, a driving current blocking circuit between the first switching means and the power supply voltage stabilization circuit, and a first receiving second and second switching means. A transformer having a winding, second and third windings for alternately outputting a switching signal, and a fourth winding for outputting the sacrificed current to the first winding, load drive switching means for connecting to the output of the transformer, respectively, switching An inductor for transmitting a high frequency switching means to a load in accordance with the received signal, first and second diodes connected in parallel to a second power supply line and the first and second switching means, respectively; A zero-voltage switching type resonant converter comprising a third diode and a fourth diode connecting the diode and the first winding and connecting the connection point and the power supply voltage stabilization circuit.

The zero-voltage switching type resonant converter according to claim 1, wherein the power supply voltage stabilization circuit comprises a capacitor that accumulates electric charges upon initial power-up, and a switching means that cuts off the power supply at a constant voltage of the capacitor.

The zero voltage resonance type converter of claim 2, wherein the sacrificial current of the transformer is supplied to a capacitor of the power supply voltage stabilization circuit through the third and fourth diodes.

According to claim 1, wherein the drive current blocking circuit has a capacitor connected to the second power supply line or ground, one side of the emitter receiving the power supply stabilization circuit, the base connected to the capacitor and the first drive A zero voltage resonant converter comprising a PNP type transistor having a collector connected to a first switching means for receiving a current.

A power supply voltage stabilization circuit for receiving a DC voltage supplied through the first and second power supply lines, a control circuit for generating a switching drive pulse for alternating a zero level interval positively and negatively according to the voltage stabilization circuit, and the control circuit A transformer having a first winding receiving an output of a winding, a second winding for alternately outputting switching means, and a fourth winding for outputting a sacrificed current to the first winding; and a load drive connected to an output of the transformer, respectively. And a switching means and an inductor for transmitting a high frequency switching signal to the load according to the switched signal, wherein the control circuit comprises a sawtooth wave generating circuit and a square wave for generating a square wave having a four-phase square wave by the sawtooth wave. The first and second spheres, which receive the generating circuit and the square wave, alternately appear at each time when the sawtooth wave is generated and extend longer than the sawtooth period. A drive signal generation circuit for outputting a wave, first and second switching means for receiving first and second drive signals, a drive current blocking circuit connected between the first switching means and the power supply voltage stabilization circuit, and a second power source First and second diodes connected in parallel to a supply line, the first and second switching means, respectively; third and fourth diodes connecting the diode and the first winding and connecting the connection point and the power supply voltage stabilization circuit. Zero-voltage switching resonant converter, characterized in that consisting of.

6. The zero voltage type resonant converter according to claim 5, wherein the power supply voltage stabilization circuit comprises a capacitor that accumulates electric charge when the initial power is turned on, and a switching means that cuts off the power supply at a constant voltage of the capacitor.

The zero voltage resonance type converter of claim 6, wherein the sacrificial current of the transformer is supplied to the capacitor of the power supply voltage stabilization circuit through the third and fourth diodes.

6. The driving circuit of claim 5, wherein the driving current blocking circuit comprises: a capacitor having one side connected to a second power supply line or ground; an emitter receiving power from the power supply stabilization circuit; a base connected to the capacitor and the first driving; A zero voltage resonant converter comprising a PNP type transistor having a collector connected to a first switching means for receiving a current.

6. The sawtooth wave generating circuit according to claim 5, wherein the sawtooth wave generating circuit includes a constant current source for receiving a supply power and outputting a constant current, a capacitor for accumulating the current of the constant current source, a comparator for comparing the capacitor voltage with a reference voltage, and an output of the comparator. And a switching means configured to switch to discharge the capacitor and generate a sawtooth output.

6. The circuit according to claim 5, wherein the square wave generator circuit comprises: a comparator for comparing the input sawtooth wave with a reference voltage, a second D flip-flop having the comparator output as a clock, and a first D having an inverted signal of the comparator output as a clock; A flip-flop, the inverted output of the first D-type flip-flop is connected to the input of the second D-type flip-flop, and the output of the second D-type flip-flop is connected to the input of the first D-type flip-flop, and the drive And a signal generator circuit comprising a second NAND gate receiving the inverted output of the first and second D flip-flops.

※ Note: The disclosure is based on the initial application.