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中文摘要：
针对传统两级结构的多路输出功率因数校正（power factor correction，PFC）变换器成本高、体积大的问题，提出临界连续模式单电感双输出Buck-Boost PFC变换器及其控制策略，分析其工作特性，通过对电感的分时复用控制，实现了两个输出支路的独立控制。相对于传统两级结构的多路输出变换器，减少了电感与控制器的数量，降低了变换器的体积与成本，提高了变换器的效率。实验结果验证了变换器高效率、高功率因数、低总谐波失真及两个输出支路的高输出精度控制特性。
英文摘要：
The two-stage multiple-output power factor correction （PFC） converter has disadvantages of high cost and large size. In order to solve the above problems, a novel single-inductor dual-output Buck-Boost PFC converter operating in a critical conduction mode （CRM） was proposed in this paper. The control strategy and corresponding characteristics were analyzed. Independent regulation can be achieved in this converter by multiplexing a single inductor. Compared with the conventional two-stage multiple output solution, this solution benefits by significant overall cost saving, small size and light weight of equipments and devices. Due to single stage power conversion, this PFC converter also benefits by high efficiency advantage. Finally, the characteristics of efficiency, power factor, total harmonic distortion （THD） and output accuracy were verified in experimental results.
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