Abstract
Active clamping single-ended forward DC/DC converters are possible to realize soft-switching with simple circuit configuration. However, these converters need large magnetizing current to realize soft-switching, therefore conduction losses become problematic. In this paper, we propose new control strategy which solves this trade-off problem fundamentally. Then we show the realization conditions of soft-switching and design method to realize soft-switching on the basis of theoretical analysis.Finally, experimental results of laboratory model which applied new control strategy are presented, in which soft-switching are realized perfectly with small magnetizing current.
