基于SSL2129AT的新型隔离式PWM调光LED驱动电路

摘要

An isolation LED driver circuit based on SSL2129AT by PWM control is presented, the design of the dimming circuit is introduced in detail, the experimental parameters and test results are given. The isolation LED driver circuit is designed to meet the following requirements:input voltage of 90-265 V, output voltage 80 V,output current 400 mA,the dimming range of 2%-100%,the efficiency higher than 85%,PF value higher than 0.9. The results of the experiments verify the feasibility of the given design scheme which has promising application prospects in the field of domestic LED lamps.%设计一种基于SSL2129AT的PWM占空比控制驱动电源输出电流大小的隔离式电路，电路设计需求输入电压为交流90~265 V，输出电压80 V，输出电流400 mA，调光范围2%~100%，效率高于85%，PF值高于0.9，在该要求下提出了详细的调光控制电路的设计与实现方案，给出了设计参数和测试结果，通过测试结果验证了所给出设计方案的可行性.