胡力元,闫斌,刘廷章.大功率LED灯具的单级PFC恒流驱动及模拟调光技术的研究[J].电测与仪表,2014,51(13):. HU Li-yuan,YAN Bin,LIU Ting-zhang.Research of Single-stage PFC Constant Current Driver of High Power LED Lamps and Analog Dimming Technology[J].Electrical Measurement & Instrumentation,2014,51(13):.
大功率LED灯具的单级PFC恒流驱动及模拟调光技术的研究
Research of Single-stage PFC Constant Current Driver of High Power LED Lamps and Analog Dimming Technology
To solve the problem that drive chip does not supporting dimming and to be used for different specifications of LEDs, the design of a single-stage PFC high power LED driver power supply is proposed, and the circuit is improved to support analog dimming. Then the design of the analog dimming circuit is introduced, and the realization principle of constant voltage and constant current is analyzed. The whole driver power supply has good constant current characteristic, high power factor and high efficiency. The experimental results show that the power supply can