A New Family of Soft Single Switched DC-DC Converters with Lossless Passive Snubber

n this paper, a novellossless snubberis introduced that provides ZVS conditions forbothOn and Off instant of converter switches. On one hand, the energy of the snubberis optimally transmitted to the output so that no significant losses are imposed on the converter. Since the converter diodes are switched off as ZCS, the reverse recovery problem is reduced. Inthis paper, the proposed snubbercircuit is applied to a conventional boost converter and an 80W sample is constructed in the laboratory to prove the performance andtheoreticalanalysis. Furthermore, in order to confirm the effectiveness of the proposed snubberon the reduction of Electromagnetic Interference (EMI), the EMI value of the boost converter with the proposed snubberhas been compared with the conventional boost converter, which shows a decrease of 10dBμV.