디스플레이용 스위칭모드 전원장치의 단락 고장분석 검출기법

DOI QR코드

DOI QR Code

이재원;전태원
Lee, Jae-Won;Chun, Tae-Won

  • 투고 : 2016.01.09
  • 심사 : 2016.06.15
  • 발행 : 2016.07.01

초록

This paper proposes techniques to diagnose short-circuit faults of both the diodes and power FET in switching mode power supply (SMPS) by using a simple analog tester. The diodes in full-bridge rectifier, power FET, switching transformer, and some sensors are modelled with resistor. The total resistance value measured at the input terminal of a SMPS is analyzed when the short-circuit faults of diodes in a full bridge rectifier or power FET are occurred. The short-circuit faults of one or two diodes in a full bridge rectifier, power FET, and both the diodes in a full bridge rectifier and power FET can be detected by a range of total resistance, which is measured by the analog tester. Through experiments, the theoretical analysis for total resistance under short-circuit faults can be verified.

키워드

Analog tester;Short-circuit fault;Switching Mode Power Supply (SMPS)

참고문헌

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과제정보

연구 과제번호 : BK21플러스

연구 과제 주관 기관 : 울산대학교