A Power Modeling and Optimization Scheme for Future Ultra Small Size Electric Systems

Masahiro FUKUI  Sayaka IWAKOSHI  Tatsuya KOYAGI  

IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.10   pp.1900-1908
Publication Date: 2007/10/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.10.1900
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on VLSI Technology toward Frontiers of New Market)
Category: Low-Power and High-Performance VLSI Circuit Technology
system operated by battery,  low power,  power dissipation model,  battery model,  

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Accompanying with the rapid popularization of portable equipments, it becomes very important to make the battery lifetime longer without increasing the battery size. Especially toward the ubiquitous computing age, long battery lifetime in a tight size limitation will be highly demanded. It will be invaluable for intelligent sensor for cars and robots, too. This paper proposes an algorithm to optimize the battery lifetime in the restriction of total size, by simultaneous analysis of operation condition of battery, buck converter, and LSI. We discuss accurate design models of those components at the same time.