A New, Continuous-Time Model For Current-Mode Control

被引：512
|
作者：
Ridley, Raymond B. [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Bradley Dept Elect Engn, Virginia Power Elect Ctr, Blacksburg, VA 24061 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 1991年 / 6卷 / 02期
关键词：
D O I：
10.1109/63.76813
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The accuracy of sampled-data modeling is combined with the simplicity of pole-zero representation to give a new current-mode control model, accurate to half the switching frequency. All of the small signal characteristics of current-mode control are predicted, including high-frequency subharmonic oscillation which can occur even at duty cycles of less than 0.5. The best representation for the control-to-output transfer function is shown to be third-order. Model predictions are confirmed with measurements on a buck converter.
引用
收藏
页码：271 / 280
页数：10
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