A DIGITAL DIRECT CONTROLLER FOR BUCK CONVERTER

被引：0

作者：

Li, Bo ^{[1
]}

Bi, Jinshun ^{[1
]}

Han, Zhengsheng ^{[1
]}

Luo, Jiajun ^{[1
]}

Lin-Shi, Xuefang ^{[2
]}

Allard, Bruno ^{[2
]}

Chen, Li ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China

[2] Univ Lyon, INSA Lyon, Ampere, F-69100 Villeurbanne, France

[3] Univ Saskatchewan, Dept Elect Engn, Saskatoon, SK, Canada

来源：

2014 12TH IEEE INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT) | 2014年

关键词：

MODE CONTROL;

D O I：

暂无

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：

A novel integrated digital controller for buck converter based on the direct system-variable calculation is presented. Compared with linear compensators, the discrete-time direct controller is conceived to generate an additional control variable during each switching period that increases the convergence rate when system states change. An all-digital current estimator is adopted to eliminate the use of current sensor. Experimental results verify closed-loop operation at switching frequency up to 4MHz. The dynamic response time for a load current step-up from 0.3A to 0.45A is 23.8 mu s, and 21.4 mu s for a step-down from 0.45A to 0.3A. An efficiency of over 75% is maintained over a power range from 29.3mW to 1.12W in which the maximum efficiency of 93.2% is achieved at 1.88V output.

引用

页数：3

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