A Versatile Step-Up/Step-Down Switched-Capacitor-Based DC-DC Converter

Chia-Ling WEI  Lu-Yao WU  Hsiu-Hui YANG  Chien-Hung TSAI  Bin-Da LIU  Soon-Jyh CHANG  

IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.5   pp.809-812
Publication Date: 2008/05/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.5.809
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Electronic Circuits
DC-DC converter,  switched-capacitor,  step up,  step down,  efficiency,  

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For battery-powered electronic products, one way to extend battery life is to use a versatile step-up/step-down DC-DC converter. A new versatile step-up/step-down switched-capacitor-based converter structure is proposed, and its efficiency is analyzed. In the step-down case, the efficiency is the same as, or even better than the efficiency of linear regulators.