A high efficiency synchronous buck VRM with current source gate driver

被引：21

作者：

Eberle, Wilson ^{[1
]}

Zhang, Zhiliang ^{[1
]}

Liu, Yan-Fei ^{[1
]}

Sen, P. C. ^{[1
]}

机构：

[1] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada

来源：

2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6 | 2007年

关键词：

D O I：

10.1109/PESC.2007.4341954

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a new current source gate drive circuit is proposed for high efficiency synchronous buck VRMs. The proposed circuit achieves quick turn-on and turn-off transition times to reduce switching loss and conduction loss in power MOSFETS. The driver circuit consists of two sets of four control switches and two very small inductors (typically 50nH-300nH each at 1MHz). It drives both the control MOSFET and synchronous MOSFET in synchronous buck VRMs. An analysis, design procedure, optimization procedure and experimental results are presented for the proposed circuit. Experimental results demonstrate an efficiency of 86.6% at 15A load and 81.9% at 30A load for 12V input and 1.3V output at 1MHz.

引用

页码：21 / 27

页数：7

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