An Interleaved Series-Parallel Combination of Two-Transistor Forward Converters

A novel DC/DC converter with interleaved series combination is proposed in this paper. The converter is made up of two two-transistor forward converters which work alternately. One advantage of this topology is that it can reduce the voltage stress on switch by the series combination of input. The other is that the filter size can be diminished due to the parallel combination of output which can increase the working frequency of the whole system by one time. A novel circuit which can realize the self-startup function is also introduced in this paper