基于MC33260的临界导电模式PFC的建模与仿真

摘要

In this paper,the method based on PSpice ABM(analogy behavioral modeling)and averaged switch modeling was introduced to simulate the Boundary Conduction Mode(BCM) control single phase PFC.By using the averaged modeling,the time-domain simulation of the ACC PFC was simplified and with less time.The modeling method is verified by the simulation and experiment results based on MC33260.%文中利用PSpice模拟行为建模功能和Boost主电路平均开关模型相结合,建立了基于MC33260的临界导电模式功率因数校正电路仿真模型。通过对开关器件的等效平均,简化了功率因数校正电路的分析与建模过程,大大缩短了仿真时间。利用该仿真模型可以分析电路的时域特性,仿真结果符合电路的设计要求。最后,利用MC33260芯片搭建了实验电路,实验结果证明了建模方法的正确性。