KR970055024A - SMPS abnormal power off device - Google Patents
SMPS abnormal power off device Download PDFInfo
- Publication number
- KR970055024A KR970055024A KR1019950064323A KR19950064323A KR970055024A KR 970055024 A KR970055024 A KR 970055024A KR 1019950064323 A KR1019950064323 A KR 1019950064323A KR 19950064323 A KR19950064323 A KR 19950064323A KR 970055024 A KR970055024 A KR 970055024A
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- KR
- South Korea
- Prior art keywords
- bridge diode
- smps
- voltage
- unit
- signal
- Prior art date
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- Dc-Dc Converters (AREA)
- Protection Of Static Devices (AREA)
- Rectifiers (AREA)
Abstract
본 발명은 SMPS의 이상 전원 차단 장치에 관한 것으로, 입력전원을 직류로 정류하는 브리지 다이오드로 구성되는 정류부(10)와, 저항(R1,R2,R3,R4,R5), 브리지 다이오드(10)으로부터 제공되는 전압을 기준 전압과 비교하여 이에따른 비교신호를 발생하는 제1비교부(70), 제1비교부(70)로부터 하이 신호가 제공되면 오프되는 제1스위칭부(60), 제1비교부의 출력신호를 반전하는 인버터(90), 제1스위칭부(60)를 통하여 제공되는 전원의 전압과 기준전압을 배교하여 이에따른 비교 신호를 발생하는 제2비교부(100), 제2비교부(100)와 인버터(90)의 출력 신호를 연산하여 출력하는 AND게이트(110), 및 AND게이트(110)로부터 하이 신호가 제공되면 오프되는 제2스위칭부(80)를 포함하고 있다.The present invention relates to an abnormal power cut-off device of an SMPS, and includes a rectifying unit (10) consisting of a bridge diode for rectifying an input power source with a direct current, a resistor (R1, R2, R3, R4, R5), and a bridge diode (10). The first comparison unit 70 and the first comparison unit 60 which are turned off when a high signal is provided from the first comparison unit 70 and the first comparison unit 70 which compare the provided voltage with a reference voltage and generate a comparison signal accordingly. The second comparator 100 and the second comparator that multiply the voltage and the reference voltage of the power supplied through the inverter 90 and the first switching unit 60 to invert the negative output signal and generate a comparison signal accordingly. An AND gate 110 that calculates and outputs an output signal of the 100 and the inverter 90, and a second switching unit 80 that is turned off when a high signal is provided from the AND gate 110.
따라서, 본 발명은, SMPS에서 입력전압이 규정범위(85Vac~264Vac)를 벗어날 경우에는 입력되는 전압을 차단함으로써 회로 소자가 손상 또는 파괴되는 것을 방지할 수 있고, 또한 브리지 다이오드에 내장하여 구성하므로써 별도의 추가회로 없이 사용할 수 있는 효과가 있다.Therefore, the present invention can prevent damage or destruction of circuit elements by cutting off the input voltage when the input voltage is outside the prescribed range (85 Vac to 264 Vac) in the SMPS, and is also built in a bridge diode to separate It can be used without additional circuits.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 전자기기등에 보편적으로 사용되는 일반적인 RCC 방식 SMPS의 회로도,1 is a circuit diagram of a general RCC type SMPS commonly used in electronic devices, etc.
제2도는 본 발명의 바람직한 실시예에 따른 SMPS의 이상 전원 차단 장치를 나타낸 도면.2 is a view showing an abnormal power cut-off device of the SMPS according to a preferred embodiment of the present invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950064323A KR970055024A (en) | 1995-12-29 | 1995-12-29 | SMPS abnormal power off device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950064323A KR970055024A (en) | 1995-12-29 | 1995-12-29 | SMPS abnormal power off device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970055024A true KR970055024A (en) | 1997-07-31 |
Family
ID=66623493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950064323A KR970055024A (en) | 1995-12-29 | 1995-12-29 | SMPS abnormal power off device |
Country Status (1)
Country | Link |
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KR (1) | KR970055024A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100976395B1 (en) * | 2008-02-01 | 2010-08-17 | 주식회사 포스코아이씨티 | A method and system for active voltage input |
-
1995
- 1995-12-29 KR KR1019950064323A patent/KR970055024A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100976395B1 (en) * | 2008-02-01 | 2010-08-17 | 주식회사 포스코아이씨티 | A method and system for active voltage input |
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Legal Events
Date | Code | Title | Description |
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WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |