The interleaved Boost resonant converter is a popular topology for high set-up scenarios like PV applications, which features set-up ratio, low input current ripple and soft-switching characteristics. However, there is a design dilemma between boost inductors and magnetizing inductance. In this paper, an auxiliary inductor is added to make it easier to achieve full-range soft-witching with asymmetrical design based on the loss model. It is beneficial to decrease the conduction loss while preserving low boost inductors loss and current ripple. In addition, the quadruple rectifier halves the voltage stress of diodes which help decrease cost as well as diode losses. It is also conductive to get a small-size transformer and drop transformer loss. Finally, a 300W prototype with 44V-66V input and 250V-440 output is made to verify the feasibility.
