本设计PFC控制采用TI-UCC28070，外围电路根据芯片手册推荐的阻容值上下调试，开关频率尝试过52.5K-72.5K，抖频尝试过2K-8K，最终开关频率设定为62.5K，抖频设定为7.2K，最大占空比设定为97.8%，采用电流检测和PWM斜坡补偿电路，驱动部分最早采用的推挽放大电路，后来改用UCC27324芯片的驱动放大电路。
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