A Family Of ?uk-, Zeta-, And Sepic-based Soft-switching Dc-dc Converters

Project Code :TEMAPE34

Abstract

A Family of ?uk-, Zeta-, and SEPIC-based Soft-Switching DC-DC Converters

Abstract—

In this paper, a new class of dc-dc converter topologies based on capacitive link dc-dc converters—?uk, SEPIC, and Zeta converters—that operate under the critical conduction mode has been proposed. The proposed converters are the extensions of quasi-square-wave zero-current-switching converters, which use an auxiliary circuit to provide zero-current and zero-voltage switching for all semiconductor switches at both turn-on and turn-off transitions and eliminate voltage ringing across the output switch. Using the proposed auxiliary circuit, the value of dv/dt has been diminished, hence, the EMI of the proposed topology is significantly reduced compared to the conventional quasi-square-wave zero-current-switching converters. To verify the operation of the proposed converter and confirm its advantages, of a simulation results has been implemented and the efficiency of the proposed converter have been compared with the conventional quasi-square-wave zero-current-switching converters.

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