KR960011620A - Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY) - Google Patents

Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY) Download PDF

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Publication number
KR960011620A
KR960011620A KR1019940022462A KR19940022462A KR960011620A KR 960011620 A KR960011620 A KR 960011620A KR 1019940022462 A KR1019940022462 A KR 1019940022462A KR 19940022462 A KR19940022462 A KR 19940022462A KR 960011620 A KR960011620 A KR 960011620A
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KR
South Korea
Prior art keywords
circuit
switching
transformer
microcomputer
smoothing
Prior art date
Application number
KR1019940022462A
Other languages
Korean (ko)
Inventor
이준희
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940022462A priority Critical patent/KR960011620A/en
Priority to JP7256734A priority patent/JPH0887355A/en
Priority to CN95116954A priority patent/CN1146567A/en
Publication of KR960011620A publication Critical patent/KR960011620A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/24—Resetting means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Electronic Switches (AREA)
  • Power Sources (AREA)

Abstract

본 발명은 순간정전시나 인위적인 단전시에 SMPS의 스위칭 신호를 이용하여 마이컴을 정확하게 리세트시킴으로써 마이컴을 보호할 수 있도록 된 SMPS를 채용한 전자장치에서의 마이컴 리세트장치를 제공하기 위한 것이다.SUMMARY OF THE INVENTION The present invention provides a microcomputer reset device in an electronic device employing an SMPS capable of protecting the microcomputer by accurately resetting the microcomputer using a switching signal of the SMPS during instantaneous power failure or artificial power failure.

이를 위해 본 발명은, 교류전원입력단에서 입력되는 교류전원을 정류 및 평활화하기 위한 정류/평활회로(10)와, 상기 평활화된 직류전원을 인가받아 전압변환하는 트랜스포머(20), 상기 트랜스포머(40)의 1차측에 설치되어 상기 트랜스포머(20)의 1차측 코일의 유기전류량을 스위칭하는 스위칭 트랜지스터(Q1), 상기 스위칭 트랜지스터(Q1)에 스위칭제어신호를 출력하는 스위칭구동회로(40), 상기 트랜스포머(20)의 2차측에 접속되어 전체 회로의 제어동작을 행하는 마이컴(80)을 구비한 전자장치에 있어서; 상기 스위칭구동회로(40)에서 출력되는 스위칭제어신호를 평활화하는 평활회로(50)와, 상기 평활회로(50)의 출력을 증폭하는 증폭회로(60), 상기 증폭회로(60)의 출력신호와 기준설정치를 비교하여 그 비교신호를 출력하는 비교회로(70) 및, 상기 비교회로(70)의 출력신호레벨에 따라 상기 마이컴(80)에 리세트신호를 스위칭 출력하는 트랜지스터(Q2)를 구비하여 이루어진 것을 특징으로 한다.To this end, the present invention, the rectifier / smoothing circuit 10 for rectifying and smoothing the AC power input from the AC power input terminal, the transformer 20 for applying the smoothed DC power, the transformer 40, the transformer 40 A switching transistor Q1 installed at the primary side of the transformer 20 for switching the amount of induced current of the primary coil of the transformer 20, a switching driving circuit 40 for outputting a switching control signal to the switching transistor Q1, and the transformer ( An electronic device having a microcomputer (80) connected to the secondary side of 20) to perform control operations of the entire circuit; A smoothing circuit 50 for smoothing the switching control signal output from the switching driving circuit 40, an amplifying circuit 60 for amplifying the output of the smoothing circuit 50, and an output signal of the amplifying circuit 60; A comparison circuit 70 for comparing the reference set value and outputting the comparison signal, and a transistor Q2 for switching the reset signal to the microcomputer 80 according to the output signal level of the comparison circuit 70; Characterized in that made.

Description

SMPS(SWITCHING MODE POWER SUPPLY)를 채용한 전자장치에서의 마이컴 리세트장치Microcomputer reset device in electronic devices employing SMPS (SWITCHING MODE POWER SUPPLY)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 SMPS를 채용한 전자장치에서의 마이컴 리세트장치를 나타낸 도면.1 shows a microcomputer reset device in an electronic device employing an SMPS according to the present invention.

Claims (3)

교류전원입력단에서 입력되는 교류전원을 정류 및 평활화하기 위한 정류/평활회로(10)와, 상기 평활화된 직류전원을 인가받아 전압변환하는 트랜스포머(20), 상기 트랜스포머(40)의 1차측에 설치되어 상기 트랜스포머(20)의 1차측 코일의 유기전류량을 스위칭하는 스위칭 트랜지스터(Q1), 상기 스위칭 트랜지스터(Q1)에 스위칭제어신호를 출력하는 스위칭구동회로(40), 상기 트랜스포머(20)의 2차측에 접속되어 전체 회로의 제어동작을 행하는 마이컴(80)을 구비한 전자장치에 있어서; 상기 스위칭구동회로(40)에서 출력되는 스위칭제어신호를 평활화하는 평활회로(50)와, 상기 평활회로(50)의 출력을 증폭하는 증폭회로(60), 상기 증폭회로(60)의 출력신호와 기준설정치를 비교하여 그 비교신호를 출력하는 비교회로(70) 및, 상기 비교회로(70)의 출력신호레벨에 따라 상기 마이컴(80)에 리세트신호를 스위칭 출력하는 트랜지스터(Q2)를 구비하여 이루어진 것을 특징으로 하는 SMPS를 채용한 전자장치에서의 마이컴 리세트장치.Rectification and smoothing circuit 10 for rectifying and smoothing the AC power input from the AC power input terminal, a transformer 20 for converting the voltage by receiving the smoothed DC power, and is installed on the primary side of the transformer 40 A switching transistor Q1 for switching the induced current amount of the primary coil of the transformer 20, a switching driving circuit 40 for outputting a switching control signal to the switching transistor Q1, and a secondary side of the transformer 20. An electronic device having a microcomputer (80) connected to perform a control operation of an entire circuit; A smoothing circuit 50 for smoothing the switching control signal output from the switching driving circuit 40, an amplifying circuit 60 for amplifying the output of the smoothing circuit 50, and an output signal of the amplifying circuit 60; A comparison circuit 70 for comparing the reference set value and outputting the comparison signal, and a transistor Q2 for switching the reset signal to the microcomputer 80 according to the output signal level of the comparison circuit 70; Microcomputer reset device in an electronic device employing the SMPS, characterized in that made. 제1항에 있어서, 상기 증폭회로(60)는 포토커플러로 구성되는 것을 특징으로 하는 SMPS를 채용한 전자장치에서의 마이컴 리세트장치.The microcomputer reset device according to claim 1, wherein the amplifying circuit (60) is formed of a photocoupler. 제1항 또는 제2항에 있어서, 상기 비교회로(70)는 상기 포토커플러(60)의 출력신호를 비반전입력단자로 입력받고 전원(Vcc)과 접지 사이에 설치된 저항(R3)과 제너다이오드(ZD)의 직렬구성에서 제너다이오드(ZD)의 분압을 비전입력단자로 입력받는 연산증폭기(OP)로 구성되는 것을 특징으로 하는 SMPS를 채용한 전자장치에서의 마이컴 리세트장치.The zener diode according to claim 1 or 2, wherein the comparison circuit (70) receives the output signal of the photocoupler (60) as a non-inverting input terminal and has a resistor (R3) and a zener diode provided between the power supply (Vcc) and ground. A microcomputer reset device in an electronic device employing an SMPS, comprising an operational amplifier (OP) for receiving a partial pressure of a zener diode (ZD) as a vision input terminal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940022462A 1994-09-07 1994-09-07 Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY) KR960011620A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019940022462A KR960011620A (en) 1994-09-07 1994-09-07 Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY)
JP7256734A JPH0887355A (en) 1994-09-07 1995-09-07 Reset signal generator of microcomputer
CN95116954A CN1146567A (en) 1994-09-07 1995-09-07 Reset signal generator for system adopting mcirocomputer and switch mode power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940022462A KR960011620A (en) 1994-09-07 1994-09-07 Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY)

Publications (1)

Publication Number Publication Date
KR960011620A true KR960011620A (en) 1996-04-20

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KR1019940022462A KR960011620A (en) 1994-09-07 1994-09-07 Microcomputer reset device in electronic device adopting SMPS (SWITCHING MODE POWER SUPPLY)

Country Status (3)

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JP (1) JPH0887355A (en)
KR (1) KR960011620A (en)
CN (1) CN1146567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020064036A (en) * 2001-01-31 2002-08-07 만도공조 주식회사 Apparatus and method for controlling average temperature of kimchi chamber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2426836B (en) * 2005-07-06 2007-05-02 Cambridge Semiconductor Ltd Switch mode power supply control systems
JP2012093978A (en) * 2010-10-27 2012-05-17 Funai Electric Co Ltd Electronic equipment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020064036A (en) * 2001-01-31 2002-08-07 만도공조 주식회사 Apparatus and method for controlling average temperature of kimchi chamber

Also Published As

Publication number Publication date
CN1146567A (en) 1997-04-02
JPH0887355A (en) 1996-04-02

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