Small-Signal Modeling of I2 Average Current Mode Control

被引：11
|
作者：
He, Siyu [1 ]
Hung, John Y. [1 ]
Nelms, R. M. [1 ]
机构：
[1] Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2016年 / 31卷 / 05期
关键词：
Average current mode control (ACM); dc-dc converters; frequency response measurement; small-signal modeling; CONVERTERS; REGULATOR;
D O I：
10.1109/TPEL.2015.2459912
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：
I-2 average current mode control is a promising control technique featuring fast dynamic response, cycle-by-cycle current limiting and accurate current control. It can be treated as peak current mode control with no peak-to-average error. By combining direct current feedback and average current feedback, I-2 average current mode control is a three-loop control system. Since it is a new control technique proposed in 2013, few papers exist which discuss the small-signal model for this control method. In this paper, a small-signal model for constant frequency I-2 average current mode control is proposed which successfully predicts the subharmonics oscillation when the duty cycle is close to or greater than 0.5. The characteristics of I-2 average current mode control are also compared with average current mode control and peak current mode control to show its advantages.
引用
收藏
页码：3849 / 3858
页数：10
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