An interleaved three-level converter with the new current doubler rectifier is proposed. The main advantages of the proposed converter are zero voltage switching (ZVS) turn-on for all switches, low output ripple current and less voltage stress of the output diodes. Two three-level converters connected in parallel are used to decrease the input current ripple, as well as to reduce the current rating of power switches. At the secondary side, two current doubler rectifiers sharing the same output filter inductors to reduce the output current ripple. The output capacitance of the power switch and the leakage inductance (or external inductance) are resonant at the transition interval so that the power switches can be turned on under ZVS. Experiments with a prototype with 750–800V input and 48V/30A output are provided to verify the theory analysis.
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