RF-powered Li-ion battery charger for biomedical applications

Chih Wen Chuang*, Ericson Go Chua, Yu Sheng Lai, Wai-Chi  Fang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

An integrated RF-powered Li-ion battery charger solution has been developed for biomedical applications. RF energy received through an antenna is rectified, regulated, and passed on to a battery charger circuit that charges a Li-ion battery efficiently and accurately. The charger system has been implemented using UMC 90nm BiCMOS process library. Experimental results show that a battery model with internal resistance of 300mΩ and internal capacitance of 10mF can be charged to its full capacity at 3.5V in 0.2ms by a 2mW 10MHz RF power source referred from the antenna. The implemented charger circuit consumes only 240 uW.

Original languageEnglish
Title of host publication2009 IEEE/NIH Life Science Systems and Applications Workshop, LiSSA 2009
Pages187-189
Number of pages3
DOIs
StatePublished - 23 Jul 2009
Event2009 IEEE/NIH Life Science Systems and Applications Workshop, LiSSA 2009 - Bethesda, MD, United States
Duration: 9 Apr 200910 Apr 2009

Publication series

Name2009 IEEE/NIH Life Science Systems and Applications Workshop, LiSSA 2009

Conference

Conference2009 IEEE/NIH Life Science Systems and Applications Workshop, LiSSA 2009
CountryUnited States
CityBethesda, MD
Period9/04/0910/04/09

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