摘要
针对LED恒流工作条件,提出一种基于半桥恒流谐振网络的LED驱动电路拓扑。详细介绍了LED恒流驱动电路拓扑的电路结构及工作原理,推导出半桥谐振网络的输出电流与LED负载之间的关系式,并对谐振网络的恒流特性进行了分析。利用Saber仿真软件对所提的LED驱动电路进行了仿真分析,并设计了1台100 W的LED恒流驱动电路原理样机,试验结果验证了所提电路的有效性。
In view of thie constant-current worlcing conditions for LED lamp, an LED driver topology based on half-bridge constant-current resonant network was proposed. Its circuit structure and working principle were introduced. The relation between the output current of half-bridge resonant network and LED load wthe constant-current character of the resonant network was analyzed. Saber simulation software was used to analyzethe property of the LED driver . Finally,a 100 W laboratory prototype was built, and the experimental resultsconfirm the validity of the proposed scheme.
出处
《电器与能效管理技术》
2017年第8期8-11,共4页
Electrical & Energy Management Technology
基金
福建省科技计划资助项目(2015H0017)
福州大学SRTP资助项目(22339)
关键词
恒流
谐振网络
LED
驱动电路
constant current
resonant network
LED
driver circuit
