摘要
传统LED驱动电源采用电解电容作为储能电容,但是电解电容严重影响了LED驱动电源的寿命。本文改进了一种无电解电容LED驱动电源电路,不仅消除了电解电容,延长了LED驱动电源的寿命,还降低了储能电容上的电压应力。文中详细分析该拓扑结构的工作原理及开关模态,最后通过实验验证该方案的正确性和可行性。
An electrolytic capacitor is used as a storage capacitor in the traditional LED driver,while the life of the LED driver is seriously affected by the electrolytic capacitor.An electrolytic capacitor-less LED driver circuit is improved in this paper,not only the electrolytic capacitor is eliminated,and the life of LED driver is extended,but also the voltage stress on the storage capacitor is reduced.The working principle and switching mode of the topology are analyzed in detail in this paper.Finally,the correctness and feasibility of the proposed scheme are verified by experiment.
作者
廖志凌
张珊珊
顾赟
顾豪鑫
陈兆岭
Liao Zhiling;Zhang Shanshan;Gu Yun;Gu Haoxin;Chen ZhaoLing(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Jiangyin Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Wuxi 214000,Jiangsu,China)
出处
《电测与仪表》
北大核心
2021年第10期164-169,共6页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(61301138)
江苏省重点研发计划(BE2019009-2)。
关键词
LED驱动器
无电解电容
低电压应力
填谷式
LED driver
electrolytic capacitor-less
low voltage stress
valley-filled
