Quasi-constant- frequency variable off-time control technique for buck-type DC-DC converter

被引：2
|
作者：
Chen, Xing [1 ]
Zhou, Guohua [1 ]
Xu, Shungang [1 ]
Zhou, Shuhan [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
ELECTRONICS LETTERS | 2015年 / 51卷 / 18期
基金：
中国国家自然科学基金;
关键词：
DC-DC power convertors; transient response; quasi-constant-frequency variable off-time control technique; buck-type DC-DC converter; QCF-VFT control technique; RIPPLE-BASED CONTROL;
D O I：
10.1049/el.2015.1298
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：
There are two weaknesses in conventional constant off-time controlled buck-type DC-DC converters: which are varied switching frequency and poor output-regulation accuracy. To make the switching frequency immune to the variation of the input voltage and the reference voltage and provide both high output-regulation accuracy and a fast transient response for buck-type DC-DC converters, a new control method, called the quasi-constant-frequency variable off-time control technique, is proposed. Circuit simulation results validate the correctness of the theoretical analysis.
引用
收藏
页码：1447 / U52
页数：3
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