In this paper, a soft-switching single-ended-primary-inductance converter (SEPIC) with\nmulti-output sources is proposed. The proposed SEPIC has the following advantages: (1) The\nconversion efficiency can be increased. To incorporate a soft-switching cell with a flyback-type,\nthe power switches can achieve zero-voltage-switching (ZVS) and zero-current-switching (ZCS)\nfeatures under turn-on transitions, resulting in reducing the switching losses and electromagnetic\ninterference (EMI); (2) The applicability can be maximized. To apply the voltage ratio of the\ntransformers, the proposed SEPIC has multi-output sources with step-up/down voltage functions.\nFinally, a prototype of the soft-switching SEPIC with multi-output sources is built and implemented.\nSimulated and experimental results are presented to verify the performance and the feasibility of the\nproposed soft-switching SEPIC with multi-output sources.
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