Optimization of CMOS transistors for low power DC-DC converters

被引:19
|
作者
Musunuri, S [1 ]
Chapman, PL [1 ]
机构
[1] Univ Illinois, Grainger Ctr Elect Machinery & Electromech, Urbana, IL 61801 USA
来源
2005 IEEE 36TH POWER ELECTRONIC SPECIALISTS CONFERENCE (PESC), VOLS 1-3 | 2005年
关键词
D O I
10.1109/PESC.2005.1581930
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper presents analytical derivation of optimum width of CMOS transistors to minimize losses in monolithic buck converters. High optimal width of CMOS transistors entails use of tapered inverter chain as gate driver. A novel technique called "width-switching" is presented, which can be easily incorporated along with the inverter chain to maintain maximum efficiency of buck converter over a range of output power levels. Experimental results from a chip containing optimal CMOS transistors for power levels between 50 mW and 200 mW are presented. Challenges in implementing the width-switching scheme, and technologies in which similar schemes can be used, are also discussed.
引用
收藏
页码:2151 / 2157
页数:7
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