嵌入PSR与PFC技术的单级LED驱动应用研究  

Application and Research on the Embedded PSR and PFC of Single-Stage LED Drive

作　　者：金小明 忻宏彬 吴礼刚 张发伟 李伟波 

机构地区：[1]宁波赛尔富电子有限公司,浙江宁波315108

出　　处：《通信电源技术》2013年第3期29-32,共4页Telecom Power Technology

基　　金："十二五"国家科技支撑项目:高可靠LED驱动电源技术开发及可靠性研究(2011BAE01B01)

摘　　要：为了提高LED驱动电源的可靠性和功率因数,降低LED驱动电源成本,采用了集成PWM、PFC、原边反馈(PSR)控制的单芯片技术;分析了其工作原理,并对核心电路进行优化设计来提升产品可靠性和效率,降低成本。实验结果表明,优化后的电源功率因数大于0.95,总谐波小于20%,效率达85%以上,成本比次级反馈方案明显降低,产品可靠性得到有效提升。此设计外围电路简单、功率因数高、可靠性高、成本低,有利于推广。In order to improve reliability of LED drive power and power factor,reduce the cost of LED drive power, the single IC technology that integrated PWM,PFC and PSR controller is put into use; this paper analyzed its working principle and optimized the design of the key circuit to improve the reliability and efficiency of the power supply and reduce the cost. The experiment results showed that the PF〉0. 95 ,THD〈20%, and η〉85%, so it is cheaper and more reliable than the secondary-stage feedback circuit. The circuit is simplified, with high PF, high reliability, and low cost, and is easily to apply.

关 键 词：单级PSR RCD吸收 电压检测 输出电路 PFC 

分 类 号：TM46[电气工程—电器]