A Peak-Capacitor-Current Pulse-Train-Controlled Buck Converter With Fast Transient Response and a Wide Load Range

被引：40
作者：
Sha, Jin [1 ]
Xu, Duo [1 ]
Chen, Yiming [1 ]
Xu, Jianping [1 ]
Williams, Barry W. [2 ]
机构：
[1] Southwest Jiaotong Univ, Sch Elect Engn, Minist Educ, Key Lab Magnet Suspens Technol & Maglev Vehicle, Chengdu 610031, Peoples R China
[2] Univ Strathclyde, Dept Elect & Elect Engn, Glasgow G1 1XW, Lanark, Scotland
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2016年 / 63卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Capacitor current feedback; pulse train (PT) control; switching dc-dc converter; wide load range; DC-DC CONVERTERS; RIPPLE-BASED CONTROL; ON-TIME CONTROL; MODE;
D O I：
10.1109/TIE.2015.2494851
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
It is known that the ripple-based control of a switching dc-dc converter benefits from a faster transient response than a conventional pulse width modulation (PWM) control switching dc-dc converter. However, ripple-based control switching dc-dc converters may suffer from fast-scale oscillation. In order to achieve fast transient response and ensure the stable operation of a switching dc-dc converter over a wide load range, based on a conventional pulse train (PT) control technique, a peak capacitor current PT (PCC-PT) control technique is proposed in this paper. With a buck converter as an example, the operating modes, steady-state performance, and transient respond performance of a PCC-PT controlled buck converter are presented and assessed. To eliminate fast-scale oscillation, circuit and control parameter design considerations are given. An accurate discrete iteration model of a PCC-PT controlled buck converter is established, based on which the effects of circuit parameters on the stability of the converter operating in a discontinuous current mode (DCM), mixed DCM-continuous conduction mode (CCM), and CCM are studied. Simulation and experimental results are presented to verify the analysis results.
引用
收藏
页码：1528 / 1538
页数：11
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