基于L6563芯片的PFC电路设计

Design of PFC Circuit Based on L6563 Chip

针对谐波电流造成的噪声和对电网的污染，选用ST公司的L6563芯片作为平台，采用Boost变换器的PFC与LLC架构，设计了LED驱动电源前端PFC电路．阐述了基于L6563的功率因数校正控制方法、主要参数的设计以及PFC环路补偿设计，为实际工程优化设计提供了理论参数．实际测试在80％的负载比例条件下，全范围输入电压（90～305V）内均可以获得0．9以上的功率因数（PF）．

In order to reduce the noise and pollution to the power network caused by the harmonic current, by using L6563 chip of ST as a platform, LED driver with Boost converter PFC and LLC architecture is designed. This paper elaborates on the power factor correction control method based on L6563, the design of main parameters and the PFC loop compensation, with an aim of providing theoretical parameters for actual engineering optimization design. The actual test shows that the value of more than 0.9 power factor （PF） is obtained under the condition of full range input voltage （90-305 V） and 800./00 load specific gravity.