Performance Enhancement with a Capacitor-Scaling Design for SSHC Piezoelectric Energy Harvesting Interfaces

Yiwei Zou, Sijun Du*

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Piezoelectric energy harvesting (PEH) has attracted much attention as an approach to exploit ambient vibrational energy to power self-sustained devices. Among the proposed interface circuits for PEH, Synchronized Switch Harvesting on Capacitor (SSHC) rectifier distinguishes itself since it achieves high power efficiency while requires no inductor. The power SSHC can extract is a function of the voltage flip efficiency. In previous studies the flip efficiency is given only under particular condition, which limits the analysis and design of SSHC circuits. This paper presents the derivation of a generic flip efficiency expression. From the result, a novel capacitor-scaling design is proposed which can reduce the total switched capacitance by up to 50% while achieving the same performance (or to enhance performance while maintaining the total capacitance). This is particularly preferred for a fully integrated design and can validated by simulations implemented in a 0.18 m. CMOS BCD technology.
Original languageEnglish
Title of host publicationProceedings of the 2022 IEEE International Symposium on Circuits and Systems (ISCAS)
Place of PublicationDanvers
PublisherIEEE
Pages2758-2762
Number of pages5
ISBN (Electronic)978-1-6654-8485-5
ISBN (Print)978-1-6654-8486-2
DOIs
Publication statusPublished - 2022
Event2022 IEEE International Symposium on Circuits and Systems (ISCAS) - Austin, United States
Duration: 27 May 20221 Jun 2022

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2022-May
ISSN (Print)0271-4310

Conference

Conference2022 IEEE International Symposium on Circuits and Systems (ISCAS)
Country/TerritoryUnited States
CityAustin
Period27/05/221/06/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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