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An improved high efficiency full bridge ZVS DC-DC converter with overall load range soft switching

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4 Author(s)
Xinke Wu ; Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Huiming Chen ; Junming Zhang ; Zhaoming Qian

This paper propose an improved full bridge DC-DC converter, which can achieve ZVS with wide input voltage range and load range. By adding two clamp diodes in the primary side of the transformer, the voltage ringing across rectifier diodes is reduced. Therefore Schottky diodes can be employed and high efficiency is achieved. A 1.2 kW/105 kHz experimental circuit was made with an efficiency higher than 95%.

Published in:

Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual  (Volume:2 )

Date of Conference:

20-25 June 2004