Abstract
In this paper, an interleaved zero voltage switching full-bridge dc-dc converter with trailing edge pulse width modulation and capacitive output filter is presented. The interleaved dc-dc converter operates efficiently, shares equal output power and uniformly distributes thermal losses among the individual cells. In comparison to a benchmark interleaved full-bridge with LC output filter, the proposed converter reduces the input and output filtering requirements and also reduces the reverse recovery losses in the secondary rectifier diodes. Simulation and experimental results are presented for a prototype unit converting 400 V from the input dc link to an output voltage range of 200 V to 450 V dc at 3300 W with a peak efficiency of 95.7%.
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