Dithering skip modulator with a novel load sensor for ultra-wide-load high-efficiency DC-DC converters

Hong Wei Huang*, Hsin Hsin Ho, Ke-Horng Chen, Sv Yen Kuo

*Corresponding author for this work

研究成果: Conference contribution同行評審

7 引文 斯高帕斯(Scopus)

摘要

Dithering skip mode with a novel load sensor for DC-DC converters is proposed to maintain a high efficiency over a wide load range. Due to the efficiency drop of the transition from the pulse-width modulation (PWM) to pulse-frequency modulation (PFM), a novel dithering skip modulation (DSM) is introduced to smooth the efficiency curve. Importantly, DSM mode can dynamically skip the number of gate driving pulses, which is inverse proportional to load current. Besides, a novel proposed load sensor can automatically select the optimum modulation method from these three modulation methods without an external selection pin. Simulation results shows DSM can maintain the efficiency of converters as high as about 89% over a wide load current range from 3mA to 500mA.

原文English
主出版物標題ISLPED'06 - Proceedings of the 2006 International Symposium on Low Power Electronics and Design
頁面388-393
頁數6
DOIs
出版狀態Published - 1 十二月 2006
事件ISLPED'06 - 11th ACM/IEEE International Symposium on Low Power Electronics and Design - Tegernsee, Bavaria, Germany
持續時間: 4 十月 20066 十月 2006

出版系列

名字Proceedings of the International Symposium on Low Power Electronics and Design
2006
ISSN(列印)1533-4678

Conference

ConferenceISLPED'06 - 11th ACM/IEEE International Symposium on Low Power Electronics and Design
國家Germany
城市Tegernsee, Bavaria
期間4/10/066/10/06

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