一种原边控制单级PFC变换器LED驱动电源  

A primary side regulation LED driver based on single-stage PFC converter

作　　者：张良[1,2] 阎铁生 王军[1,2] 陈海川 胡鹏[3] Zhang Liang Yan Tiesheng Wang Jun Chen Haichuan Hu Peng(Sichuan Province Key Laboratory of Power Electronics Energy-saving Technologies ＆ Equipment, Xihua University, Chengdu 610039, China School of electrical and electronic information ,Xihua University, Chengdu 610039 ,China Chengdu MOLO Electric Ltd. ,Chengdu 610500,China)

机构地区：[1]西华大学四川省电力电子节能技术与装备高校重点实验室,四川成都610039 [2]西华大学电气与电子信息学院,四川成都610039 [3]成都麦隆电气有限公司,四川成都610500

出　　处：《电子技术应用》2017年第11期136-138,146,共4页Application of Electronic Technique

基　　金：四川省科技厅项目(2016JY0161);西华大学自然科学重点基金(Z1520906)

摘　　要：针对传统Buck-Flyback单级PFC变换器只能采用副边反馈控制方式实现LED恒流,从而导致变换器结构复杂、体积大、成本高的缺点,提出了一种基于原边控制的Buck-Flyback单级PFC变换器LED驱动电源。分析了驱动电源主电路的工作原理和原边控制策略的恒流原理。最后设计了一台输入AC 90~264 V、输出300 m A/12 W的实验样机进行了实验验证。The traditional Buck-Flyback single-stage PFC converter only uses secondary-side control to realize constant current, which causes the converter complex and expensive. A LED driver based on the PSR（Primary Side Regulation） Buck-Flyback single- stage PFC converter is proposed in this paper. The operation principle of main circuits of LED driver and the principle of constant current of PSR technology are analyzed. Finally, experimental results verify the correctness of the theoretical derivation based on the prototype with AC 90-264 V input, 300 mA/12 W output.

关 键 词：LED驱动 Buck-Flyback变换器 原边控制 

分 类 号：TN86[电子电信—信息与通信工程]