Design Considerations for a Low-Voltage High-Current Redundant Parallel Voltage Regulator Module System

被引：17

作者：

Mishra, Santanu ^{[1
]}

Zhou, Xingsheng ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India

[2] Int Rectifier Corp, N Kingstown, RI 02852 USA

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2011年 / 58卷 / 04期

关键词：

Current-mode control; interleaved voltage regulator module (VRM); modeling; parallel system; synchronous rectifier; CURRENT-SHARING CONTROL;

D O I：

10.1109/TIE.2010.2049714

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents the design considerations for a redundant parallel multiphase voltage regulator module (VRM) system. The VRMs are modulated to achieve a controlled current source property, which helps in achieving good current sharing among modules with true redundancy. The steady-state, small-signal, and large-signal characteristics of the control are discussed. A novel local sense feedback is used to improve the large-signal dynamics of the parallel system. Two 3.3-V/140-A prototypes are used to validate the design concepts. Experimental results show good correlation with the theoretical models. The current sharing between the parallel modules is within 10%, and the dynamic voltage response improvement is 33%, as a result of the local sense feedback.

引用

页码：1330 / 1338

页数：9

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