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为有效地提高有源功率因数校正控制器(APFC)[1]性能,设计了一种用可控电流法实现,可应用于连续/临界型(CCM/DCM)升压(BOOST)模式APFC的模拟乘法器.该乘法器有较好的线性特性,线性范围达到0~3V,与传统方法相比,特别嵌入了总谐波失真(THD)优化电路,从而达到最优化输入电流THD,提高功率因数的目的.最后给出了具体的乘法器电路图和仿真结果.
In order to improve the performance of active power factor correction controller (APFC) [1] effectively, a controllable current method is designed and applied to APFC in continuous / critical mode (CCM / DCM) BOOST mode Analog multiplier. The multiplier has good linearity, the linear range of 0 ~ 3V, compared with the traditional method, in particular, embedded total harmonic distortion (THD) optimization circuit, so as to achieve the optimal input current THD, increase power The purpose of the factor.Finally gives the concrete multiplier circuit diagram and the simulation result.