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

页码：1447 / U52

页数：3

共 4 条

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[4] Analysis of Pulse Bursting Phenomenon in Constant-On-Time-Controlled Buck Converter
Wang, Jinping
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Bao, Bocheng
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