An ultra-low voltage self-startup charge pump for energy harvesting applications

Chandradevi Ulaganathan, Benjamin J. Blalock, Jeremy Holleman, Charles L. Britton

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

21 Scopus citations

Abstract

An ultra-low voltage, self-starting, switched-capacitor based charge pump is proposed for energy harvesting applications. The integrated linear charge pump topology presented in this work has been optimized for low-voltage start-up. The control signals for the charge-transfer switches (CTS), generated using two clock phases, reduce reverse currents and thus improve the efficiency of the converter. Adiabatic switching techniques have been employed to reduce the switching losses associated with the CTS gate control. This design has been implemented in a 130-nm CMOS process. Simulation results demonstrate a low startup voltage of 125 mV with efficiency of 62 % for a static current load of 0.1 μA.

Original languageEnglish
Title of host publication2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages206-209
Number of pages4
ISBN (Print)9781467325264
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012 - Boise, ID, United States
Duration: Aug 5 2012Aug 8 2012

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Conference

Conference2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
Country/TerritoryUnited States
CityBoise, ID
Period08/5/1208/8/12

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