Abstract：Two stage multiple output power factor correction(PFC) converter has the disadvantages of high cost and large size. In order to solve the above problems, a novel single-inductor dual-output Buck PFC converter was proposed in this paper. Control strategy and corresponding characteristics were analyzed. Independent regulation can be achieved in this converter by multiplexing a single inductor. Inductor current operates in discontinuous conduction mode(DCM), eliminates the cross- regulation of each output. Compared with conventional two-stage multiple output solution, this solution benefits with significant overall cost saving, small size and light weight of equipment and device. Due to single stage power conversion, this PFC converter also benefits with high efficiency advantage. Finally, the characteristics of efficiency, power factor and output accuracy were verified in experimental results.
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2015, Vol. 30 
