A Study on the Controllable Snubber for Switching Loss Reduction in Interleaved Fly-Back Converter

인터리브드 플라이 백 컨버터의 스위칭 손실 감소를 위한 제어형 스너버에 관한 연구

Park, Chang-Seok;Jung, Tae-Uk

  • Received : 2014.11.25
  • Accepted : 2015.02.26
  • Published : 2015.05.29


This paper proposes a new switching algorithm for an controllable clamp snubber to improve the efficiency of a fly-back converter system. This system uses an controllable clamp method for the snubber circuit for the efficiency and reliability of the system. However, the active clamp snubber circuit has the disadvantage that system efficiency is decreased by switch operating time because of heat loss in resonance between the snubber capacitor and leakage inductance. To address this, this paper proposes a new switching algorithm. The proposed algorithm is a technique to reduce power consumption by reducing the resonance of the snubber switch operation time. Also, the snubber switch is operated at zero voltage switching by turning on the snubber switch before main switch turn-off. Experimental results are presented to show the validity of the proposed controllable clamp control algorithm.


Switching Algorithm;Clamp Snubber;ZVS;Boost Converter;Resonance


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