电压型CRM Boost PFC小信号建模分析与补偿设计  

Small-signal modeling analysis and compensation design for CRM Boost PFC converters in voltage-control-mode

作　　者：严利民[1] 李茂泽 姜玉稀[2] 王成[1] 关彦青 

机构地区：[1]上海大学微电子中心,上海200444 [2]上海交通大学,上海200240 [3]上海三思电子工程有限公司,上海201100

出　　处：《电子技术应用》2015年第1期145-148,共4页Application of Electronic Technique

摘　　要：介绍了一种工作电压控制模式下的CRM-Boost功率因数校正(PFC)电路的小信号模型推导过程,该方法是在传统的态空间平均法已不再适用的情况下,采用电流注入等效电路的方法来推导其数学模型,并在小信号数学模型的基础上设计了控制环路的补偿网络。最后在专业开关电源设计仿真平台SIMetrix/SIMPLIS中实现了一个10 W的CRM-Boost-PFC实例设计,仿真验证了该小信号建模方法和补偿设计的合理性。In this paper a small-signal model of CRM Boost PFC in voltage controlled model is derived under the circum- stance of State-Space Averaging Method is becoming invalid. Firstly, the current injected equivalent circuit approach is adopted to derive its mathematical model. And then, based on the derivation of this model, a compensator is designed to make the system much more stable. Finally, a 10 W CRM-Boost PFC converter is designed on a professional switch supply simulation platform SIMetrix/SIMPLIS, which well verifies the derivation and the compensator design.

关 键 词：电压控制模式 CRM BOOST PFC 小信号模型 环路稳定性 

分 类 号：TN702[电子电信—电路与系统]