临界连续模式单电感双输出BuckBoost功率因数校正变换器刘雪山.pdf

34 15 Vol.34 No.15 May 25, 2014 2014 5 25 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. 2379 DOI 10.13334/j.0258-8013.pcsee.2014.15.007 0258-8013 (2014) 15-2379-09 TM 46 Buck-Boost 1 1 1 1 2 (1. 610031 2. 100044) Single-inductor Dual Output Buck-Boost Power Factor Correction Converters Operating in Critical Conduction Mode 1 1 1 1 2 LIU Xueshan , XU Jianping , WANG Nan , CHEN Zhangyong , HE Mingzhi (1. Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan Province, China; 2. School of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China) ABSTRACT: 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. 0 Compared with the conventional two-stage multiple output LED solution, this so