dc.contributor.author |
Gallichan, Robert |
en |
dc.contributor.author |
Leung, Ho |
en |
dc.contributor.author |
Budgett, David |
en |
dc.contributor.author |
Hu, Aiguo |
en |
dc.contributor.author |
McCormick, John |
en |
dc.date.accessioned |
2019-09-19T02:31:50Z |
en |
dc.date.issued |
2017 |
en |
dc.identifier.issn |
2052-8418 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/47768 |
en |
dc.description.abstract |
In this work, a shorting control (SC) scheme is integrated into a complementary metal-oxide-semiconductor (CMOS) synchronous rectifier for the output voltage regulation of a wireless power supply. The rectifier is designed to operate in a parallel tuned pickup with a 500 mW output power capability for biomedical implants. Without any additional components, the proposed SC method enables the power pickup to operate with high efficiency under variable coupling conditions while maintaining the required load power to keep the output voltage constant. Desired operating conditions are achieved with increased power transfer capability at weak magnetic coupling conditions and higher power efficiency at strong coupling. A novel derivation describes the change in efficiency with SC duty ratio. Experimental validation is completed with an original custom CMOS integrated rectifier with embedded SC. It is demonstrated that the proposed SC method can increase the overall secondary pickup power transfer efficiency by 14% as the magnetic coupling increases to the stronger end. |
en |
dc.publisher |
Cambridge University Press |
en |
dc.relation.ispartofseries |
Wireless Power Transfer |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.title |
Improved wireless power pickup efficiency using CMOS synchronous rectifier with embedded shorting control |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1017/wpt.2017.2 |
en |
pubs.issue |
1 |
en |
pubs.begin-page |
61 |
en |
pubs.volume |
4 |
en |
dc.rights.holder |
Copyright: The author |
en |
pubs.end-page |
68 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
617221 |
en |
pubs.org-id |
Bioengineering Institute |
en |
pubs.org-id |
ABI Associates |
en |
pubs.org-id |
Engineering |
en |
pubs.org-id |
Department of Electrical, Computer and Software Engineering |
en |
pubs.record-created-at-source-date |
2017-03-16 |
en |
pubs.online-publication-date |
2017-03-06 |
en |