Then the origin of distortion in input current waveform was analyzed, from which the method of reducing the distortion was derived. Based on the analysis, the APFC system was designed and simulated.

• 然后,从芯片内部电路到外部应用电路,深入分析了可能导致输入电流畸变的原因,并给出了减小畸变的措施,从而指导模块电路设计的优化和系统的完善;