摘要
针对传统两级AC-DC的LED驱动电路,研究1种带有高功率因数(PFC)单级AC-DC的LED驱动电源并介绍其工作原理。该单级AC-DC变换器是由前级PFC电路的Boost电感电流工作在断续模式,后级半桥LLC谐振电路经全桥整流输出脉冲电流驱动LED负载,同时集成两级电流为一级,实现电路高功率因数和稳定的输出波形。最后通过Saber仿真结果,验证了电路的可行性。
This paper studies a structure with power factor correction （PFC） which is a single-stage AC-DC of LED drive power, according to the traditional two-stage AC-DC of LED driver circuit. The Boost converter is operated at discontinuous conduction mode （DCM） to ensure a high power factor, and then LLC half bridge resonance circuit outputs pulse current to drive LED lighting. Finally, the feasibility of the scheme has been verified by Saber simulation.
出处
《中国照明电器》
2016年第7期32-35,42,共5页
China Light & Lighting
