KR960009371A

KR960009371A - H bridge driving circuit for motor driving

Info

Publication number: KR960009371A
Application number: KR1019940020808A
Authority: KR
Inventors: 안규봉
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1994-08-23
Filing date: 1994-08-23
Publication date: 1996-03-22
Also published as: KR100319277B1

Abstract

1. 청구범위에 기재된 발명이 속하는 기술 분야1. TECHNICAL FIELD OF THE INVENTION

에이치 브리지 회로를 이용하여 모터를 양방향 회전을 제어하는 기술에 관한 것이다.A technique for controlling bidirectional rotation of a motor using an H bridge circuit.

2. 발명에 해결하려고 하는 기술적 과제2. Technical problem to be solved in invention

에이치 브리지에 모터 구동신호를 인가하는 PWM 을 이용하여 모터의 양방향 회전제어를 제어시 발생되는 모터의 이상 회전과 에이치 브리지내의 회로의 소손을 방지하는 에이치 브리지 구동회로를 제공한다.The present invention provides an H bridge driving circuit which prevents abnormal rotation of the motor and burnout of a circuit in the H bridge generated by controlling the bidirectional rotation control of the motor by using a PWM applying a motor driving signal to the H bridge.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

PWM 발생장치와 에이치 브리지의 사이에 상기 PWM발생장치로부터 출력되는 정회전 및 역회전 제어를 위한 PWM펄스에 의해 모터 구동신호를 발생하기 위한 스위칭회로와 구동회로를 부가한다.그리고, 상기 PWM과 상기 상기 스위칭회로의 사이에는 PWM펄스를 광전-전광 변환하여 신호를 분리 접속하는 신호 결합기를 접속한다.A switching circuit and a driving circuit for generating a motor driving signal are added between the PWM generator and the H bridge by PWM pulses for forward rotation and reverse rotation control output from the PWM generator. The PWM and the Between the switching circuits is connected a signal combiner for separating and connecting the signals by photoelectric conversion to PWM pulses.

4. 발명의 중요한 용도4. Important uses of the invention

모터의 회전 제어를 필요로 하는 전자기기, 공작기계등.Electronic equipment, machine tools, etc. that require motor rotation control.

※ 선택도 제2도※ second degree of selectivity

Description

H bridge driving circuit for motor driving

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

제2도는 본 발명에 따른 에이치 브리지의 구동 회로도.2 is a driving circuit diagram of an H bridge according to the present invention.

Claims

An H bridge comprising a first positive and reverse rotation driving transistor and a second zero and forward rotation driving transistor connected in series between the first and second paths between the power supply voltage and ground, respectively, and the first forward and reverse directions. An H-bridge drive circuit having a motor connected between a first connection node of a rotation drive transistor and a second reverse, second connection node of a forward rotation drive transistor, the phase of which is exclusive in response to an input of a drive command. A pulse width modulation means for alternately outputting first and second output signals as signals in a first state and a second state, and in response to a first state output of the pulse width modulation means to drive a first bridge of the H bridge. Outputs driving signals of the forward rotation driving transistor and the second forward rotation driving transistor, and is driven in response to the second state output to generate the first reverse rotation driving transistor and the second reverse rotation of the H bridge; An H bridge driver for motor driving, comprising: an H bridge driving means for outputting a drive signal of a drive transistor.

The H bridge driving means according to claim 1, wherein the H bridge driving means switches in response to a first output signal output from the pulse width modulation means, outputs a first forward rotation switching signal, and switches in response to the blocking of the first output signal. First switching means for outputting a first reverse switching signal, and switching in response to a second output signal outputted from the pulse width modulation means to output a second reverse rotation switching signal, and blocking the second output signal. Second switching means for switching in response to the first forward switching signal, and driving the first forward rotation driving transistor in response to the first forward rotation switching signal output from the first switching means, A first driving means for driving the first reverse rotation driving transistor in response to a reverse rotation switching signal of 1 and outputted from the second switching means; Second driving means for driving the second reverse rotation driving transistor in response to a second reverse rotation switching signal and driving the first forward rotation driving transistor in response to a first forward rotation switching signal. H-bridge driver, characterized in that consisting of.

The H-bridge driver according to claim 1 or 2, wherein each of the first forward and reverse rotation driving transistors and the second forward and reverse rotation driving transistors is a unipolar transistor.

An H bridge comprising a first positive and reverse rotation driving transistor and a second reverse and forward rotation driving transistor connected in series between the first and second paths between the power supply voltage and ground, respectively, and the first forward and reverse directions. An H-bridge drive circuit having a motor connected to a difference between a first connection node of a rotational drive transistor and a second reverse node, and a second connection node of a forward rotational drive transistor, the phase of which is exclusive in response to an input of a drive command. A pulse width modulation means for alternately outputting the first and second output signals as signals in a first state and a second state, and a first operation operated by an input of a first power source and output from the pulse width modulation means. Signal separation means for insulated and transmitting a second output signal as the level of the first power supply, power supply means for supplying a power supply voltage to the signal separation means with a first power supply having a predetermined level, and the first electric field; Operating in response to a first input of a source and outputting the driving signals of the first forward rotation driving transistor and the second forward rotation driving transistor of the H bridge, the first state output being output through the signal separation means; And an H-bridge driving means for driving in response to a bi-state output to output drive signals of the first reverse rotation driving transistor of the etch bridge and the second reverse rotation driving transistor.

The H bridge driving means is configured to switch in response to a first output signal output from the pulse width modulation means, to output a first forward rotation switching signal, and to respond to the blocking of the first output signal. First switching means for outputting a first reverse switching signal, and switching in response to a second output signal output from the pulse width modulation means to output a second reverse rotation switching signal, and blocking the second output signal. Second switching means for switching in response to the first forward rotation switching signal, and driving the first forward rotation driving transistor in response to a first forward rotation switching signal output from the first switching means, Output from the first driving means and the second switching means for driving the first reverse rotation driving transistor in response to a first reverse rotation switching signal. Second driving means for driving the second reverse rotation driving transistor in response to a second reverse rotation switching signal, and driving the first forward rotation driving transistor in response to a first forward rotation switching signal. H-bridge driver, characterized in that consisting of.

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