Symmetrical dynamics of peak current-mode and valley current-mode controlled switching dc-dc converters with ramp compensation

作     者：周国华 许建平 包伯成 金艳艳 

作者机构：School of Electrical EngineeringSouthwest Jiaotong University School of Electrical and Information EngineeringJiangsu Teachers University of Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2010年第19卷第6期

页      面：122-129页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.50677056) the Natural Science Foundation of Jiangsu Province,China (Grant No.BK2009105) the Cultivation Project of Excellent Doctorate Dissertation of Southwest Jiaotong University,China the Doctoral Innovation Foundation of Southwest Jiaotong University,China 

主　　题：discrete iterative map model dynamics switching converters ramp compensation 

摘      要：The discrete iterative map models of peak current-mode （PCM） and valley current-mode （VCM） controlled buck converters, boost converters, and buck-boost converters with ramp compensation are established and their dynamical behaviours are investigated by using the operation region, parameter space map, bifurcation diagram, and Lyapunov exponent spectrum. The research results indicate that ramp compensation extends the stable operation range of the PCM controlled switching dc-dc converter to D 〉 0.5 and that of the VCM controlled switching dc-dc converter to D 〈 0.5. Compared with PCM controlled switching dc-dc converters with ramp compensation, VCM controlled switching dc-dc converters with ramp compensation exhibit interesting symmetrical dynamics. Experimental results are given to verify the analysis results in this paper.