A new interleaved forward converter with inherent demagnetizing feature

A new forward converter with natural magnetizing reset and interleaved parallel-connection features is proposed in this paper, the theoretical analysis indicates that by using the auxiliary diodes and unique architecture, the proposed forward converter can realize natural magnetizing reset, all leakage and magnetizing energies in the transformers can be recycled, and the voltage stress on each switch is clamped at V_in in addition, parallel connection of transformer, the output rectifier and filters can distribute power losses and thermal stresses of the transformers and semiconductors, and the interleaved operation can reduce the current ripple in output capacitors. All these features make the proposed forward converter suitable for the DC-DC converters with high input voltage, high output current, and high power density. The theoretical analysis is proved by a 200 W experimental prototype.