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DC-DC Buck converter Using an Adjustable Dead-time Control Method  

Lim, Dong-Kuyn (Dept. of Electronic Engineering, Inha University)
Yoo, Tai-Kyung (Dept. of Electronic Engineering, Inha University)
Lee, Gun (Dept. of Electronic Engineering, Inha University)
Yoon, Kwang-Sub (Dept. of Electronic Engineering, Inha University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.48, no.6, 2011 , pp. 25-32 More about this Journal
Abstract
This paper proposes high efficiency current-mode DC-DC buck converter that are suitable for portable devices. The current-mode DC-DC buck converter using adjustable Dead-time control method improves the power efficiency 2~5%. The buck converter has been implemented with a standard 0.35${\mu}m$ CMOS process. The size of this chip is 0.97$mm^2$. The input range of the fabricated DC-DC buck converter is 2.5V~3.3V, and the output is 1.8V. The maximum loading current of the converter is 500mA and the peak efficiency is 93% at 200mA loads.
Keywords
Buck; Dead-time; DC-DC converter; soft start; power management;
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Times Cited By KSCI : 2  (Citation Analysis)
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