物理学报2011，Vol.60Issue(5)：777-783,7.
恒定导通时间控制buck变换器多开关周期振荡现象分析
Analysis of multi-switching period oscillation phenomenon in constant on-time controlled buck converter
摘要
Abstract
In this paper, multi-switching period oscillation phenomenon in constant on-time (COT) controlled buck converter is studied, and the effect of output capacitor equivalent series resistance (ESR) on the control performance of COT controlled buck converter is revealed. The study results indicate that ESR is the critical factor causing multi-switching period oscillation phenomenon in the COT controlled buck converter, and critical value of ESR is obtained. When the value of ESR is less than the critical value, the multi-switching period oscillation phenomenon occurs, and it disappears when the value of ESR is higher than the critical value. Finally, the theoretical results are verified by simulation.关键词
恒定导通时间控制/buck变换器/振荡/等效串联电阻Key words
constant on-time control/ buck converter/ oscillation/ equivalent series resistance引用本文复制引用
王金平,许建平,徐杨军..恒定导通时间控制buck变换器多开关周期振荡现象分析[J].物理学报,2011,60(5):777-783,7.基金项目
国家自然科学基金(批准号:50677056),中央高校基本科研业务费专项资金(批准号:SWJTU09ZT13)和西南交通大学工程实践项目(批准号:10-78)资助的课题. （批准号:50677056）
