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

页码：3849 / 3858

页数：10

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