中国电机工程学报2012，Vol.32Issue(24)：52-58,7.
峰值电流模式控制非理想Buck变换器系统建模
Modeling of Current Programmed Mode Non-ideal Buck Converter Systems
摘要
Abstract
In order to improve the modeling accuracy of the switching converter system, to reduce the deviation between the model and the actual circuit and to guide the design of system chips, an updated model of power stage for non-ideal Buck converters was established on the basis of the theory of energy conservation and switch average models. This model considered the influence of every element's equivalent parasitic parameters and inductor current ripples existing in actual converters, and the influence of the output current oscillation for the circuit performance. Based on these, small-signal model non-ideal parameters were modified for the control loop of the current programmed mode non-ideal Buck converters. In the end, a small-signal model was built for the current programmed mode non-ideal Buck converter system. Analysis and simulation by Matlab were implemented. It could be seen that the new model is intuitive and has clear physical meaning. Therefore, it can reflect the actual operation of the system more accurately.关键词
Buck DC-DC变换器/非理想/峰值电流模式控制/小信号建模Key words
Buck DC-DC converter/ non-ideal/ current programmed mode/ small-signal modeling分类
信息技术与安全科学引用本文复制引用
解光军,徐慧芳..峰值电流模式控制非理想Buck变换器系统建模[J].中国电机工程学报,2012,32(24):52-58,7.基金项目
安徽省高等学校省级自然科学研究重点项目(KJ2011A213). （KJ2011A213）
