KR960016094A - Switching Mode Power Supplies - Google Patents

Switching Mode Power Supplies Download PDF

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Publication number
KR960016094A
KR960016094A KR1019940028123A KR19940028123A KR960016094A KR 960016094 A KR960016094 A KR 960016094A KR 1019940028123 A KR1019940028123 A KR 1019940028123A KR 19940028123 A KR19940028123 A KR 19940028123A KR 960016094 A KR960016094 A KR 960016094A
Authority
KR
South Korea
Prior art keywords
pulse
input voltage
width modulation
pulse width
switching mode
Prior art date
Application number
KR1019940028123A
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Korean (ko)
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KR970010614B1 (en
Inventor
조재학
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940028123A priority Critical patent/KR970010614B1/en
Publication of KR960016094A publication Critical patent/KR960016094A/en
Application granted granted Critical
Publication of KR970010614B1 publication Critical patent/KR970010614B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control

Abstract

스위칭 모드 파워 서플라이가 개시되는 바, 이는 펄스폭 변조 IC로 구동되는 스위칭 모드 파워 써플라이에 있어서 파워트랜스포머의 2차측에는 정류되기 전 펄스신호의 크기를 검출, 비교하여 입력전압을 판단하고 교류 220볼트로 판단하면 파워 트랜스포머의 동작을 제어하는 펄스폭 변조 IC를 게속 동작시키고 교류 110볼트로 판단되면 펄스폭 변조 IC의 동작을 중지시켜 오동작됨을 방지하도록 한 것이다.A switching mode power supply is disclosed. In a switching mode power supply driven by a pulse width modulation IC, the secondary side of the power transformer detects and compares the magnitude of a pulse signal before rectifying, and determines an input voltage. When judged, the pulse width modulation IC controlling the operation of the power transformer is continuously operated, and when it is determined as 110 volts, the operation of the pulse width modulation IC is stopped to prevent the malfunction.

특징적인 구성으로는 파워 트랜스포머의 2차측에 유기되는 전압파형을 정류하지 않은 상태로 펄스신호를 검출, 비교하여 입력전압의 크기를 판단하는 입력전압 판단회로와 입력전압 판단경과에 따라 펄스폭 IC의 발진출력을 제어하여 파워 트랜스포머의 동작을 제어하는 펄스폭 변조 IC 차단수단으로 이루어짐에 있다.As a characteristic configuration, an input voltage judgment circuit for determining the magnitude of the input voltage by detecting and comparing pulse signals without rectifying the voltage waveform induced on the secondary side of the power transformer and the pulse width IC according to the input voltage judgment It is composed of a pulse width modulation IC blocking means for controlling the oscillation output to control the operation of the power transformer.

Description

스위칭 모드 파워 써플라이Switching Mode Power Supplies

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

제3도는 이 발명에 따른 펄스폭 변조 IC를 이용한 교류 220볼트 전용 스위칭 모드 파워 써플라이의 구성을 보인 회로도,3 is a circuit diagram showing the configuration of a switching mode power supply for AC 220 volts using a pulse width modulation IC according to the present invention;

제4도는 제3도의 입력전압 판단회로의 실시예를 보인 상세도.4 is a detailed view showing an embodiment of the input voltage determination circuit of FIG.

Claims (3)

교류입력전원을 전파정류하여 다수 전압으로 분배하고, 분배된 일부 전압을 펄스폭 변조 IC의 구동전압으로 공급하여 펄스폭 변조 IC의 발진출력에 의해 파워 트랜스포머의 동작을 제어하는 스위칭 모드 파워 써플라이에 있어서, 파워 트랜스포머의 2차 코일 25볼트 단자에 유기되는 펄스신호를 검출하여 펄스크기를 비교하여 입력전압의 크기를 판단하는 입력전압 판단수단과, 입력전압 판단결과에 따라 펄스폭 변조 IC의 발진출력을 제어하여 파워 트랜스포머의 동작을 제어하는 펄스폭 변조 IC차단수단으로 구성한 것을 특징으로 하는 스위칭 모드 파워 써플라이.In a switching mode power supply in which the AC input power is rectified and divided into a plurality of voltages, and some of the divided voltages are supplied as a driving voltage of the pulse width modulation IC to control the operation of the power transformer by the oscillation output of the pulse width modulation IC. Input voltage judging means for detecting the pulse signal induced at the 25 volt terminal of the secondary coil of the power transformer and comparing the magnitude of the pulse to determine the magnitude of the input voltage, and generating the oscillation output of the pulse width modulation IC according to the input voltage judging result. A switching mode power supply characterized by comprising a pulse width modulation IC blocking means for controlling the operation of a power transformer by controlling. 제1항에 있어서, 입력전압 판단수단은, 파워 트래스포머의 2차측에서 유기되는 펄스신호의 정(＋) 펄스크기를 검출해내는 정펄스크기 검출부와, 파워 트랜스포머의 2차측에서 유기되는 펄스신호의 부(－)펄스크기를 검출하는 부펄스크기 검출부와, 검출된 정(＋), 부(－) 펄스의 크기를 비교하여 비교값을 출력하는 펄스크기 비교부로 구성됨을 특징으로 하는 교류 220볼트 전용 스위칭 모드 파워써플라이.2. The input voltage judging means according to claim 1, wherein the input voltage judging means comprises: a positive pulse size detector for detecting a positive (+) pulse size of the pulse signal induced on the secondary side of the power transformer, and a pulse induced on the secondary side of the power transformer; AC pulse generator comprising a negative pulse detector for detecting a negative pulse signal of the signal and a pulse size comparator for comparing the magnitudes of the detected positive and negative pulses and outputting a comparison value. Volt only switching mode power supply. 제1항에 있어서의 펄스폭 변조 IC차단수단은, 입력전압 판단수단의 펄스크기 비교결과에 따라 포토커플러의 동작을 제어하는 포토커플러 제어부와, 포토커플러의 동작에 따라 에스씨알(SCR)의 게이트 펄스를 인가하여 펄스폭 변조 IC의 접지단자를 제어하는 펄스폴 변조 IC제어부로 구성됨을 특징으로 하는 스위칭 모드 파워 써플라이.The pulse width modulation IC blocking means of claim 1 includes: a photocoupler controller for controlling the operation of the photocoupler according to the pulse size comparison result of the input voltage determination means; and a gate of the SCR according to the operation of the photocoupler. Switching mode power supply, characterized in that consisting of a pulse pole modulation IC control unit for applying a pulse to control the ground terminal of the pulse width modulation IC. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940028123A 1994-10-31 1994-10-31 Switching mode power supply KR970010614B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940028123A KR970010614B1 (en) 1994-10-31 1994-10-31 Switching mode power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940028123A KR970010614B1 (en) 1994-10-31 1994-10-31 Switching mode power supply

Publications (2)

Publication Number Publication Date
KR960016094A true KR960016094A (en) 1996-05-22
KR970010614B1 KR970010614B1 (en) 1997-06-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940028123A KR970010614B1 (en) 1994-10-31 1994-10-31 Switching mode power supply

Country Status (1)

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KR970010614B1 (en) 1997-06-28

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