Thin-film-integrated power inductor on Si and its performance in an 8-MHz buck converter

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dc.contributor.authorWang, Ningning
dc.contributor.authorO'Donnell, Terence
dc.contributor.authorMeere, Ronan
dc.contributor.authorRhen, Fernando M. F.
dc.contributor.authorÓ Mathúna, S. Cian
dc.contributor.authorRoy, Saibalen
dc.contributor.funderEnterprise Irelanden
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2009-06-09T15:55:36Z
dc.date.available2009-06-09T15:55:36Z
dc.date.copyright2008
dc.date.issued2008-11
dc.description.abstractThis paper presents a microinductor fabricated on silicon using electrochemical techniques that has high efficiency in a low power dc–dc converter. Small signal measurements show a flat frequency response up to 20 MHz with a self resonant frequency of 130 MHz. The inductance at low frequency is approximately 440 nH with a dc resistance of 0.5 Ω, and a high quality factor of 11.7 at 5.5 MHz. The current handling capability test shows less than 10% decrease in inductance at 500-mA current. The performance of the microinductor has been compared to a conventional chip inductor in a commercially available 8-MHz buck converter. The converter maximum efficiency when using the microinductor is shown to be approximately 3% lower than the one using the conventional discrete chip inductor. However, the profile of the microinductor is much lower than that of the discrete chip inductor. The maximum efficiency of the microinductor in the converter is estimated to be approximately 92%.en
dc.description.sponsorshipEnterprise Ireland (EI - Industry Led Research Program in Power Electronics); Science Foundation Ireland (CSET - Centre for Science, Engineering and Technology)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWang, N., O'Donnell, T., Meere, R., Rhen, F.M.F., Roy, S., Ó Mathúna, S.C., 2008. Thin-film-integrated power inductor on Si and its performance in an 8-MHz buck converter. IEEE Transactions on Magnetics, 44(11), pp. 4096-4099en
dc.identifier.doi10.1109/TMAG.2008.2001584
dc.identifier.endpage4099en
dc.identifier.issn0018-9464
dc.identifier.issued11en
dc.identifier.journaltitleIEEE Transactions on Magneticsen
dc.identifier.startpage4096en
dc.identifier.urihttps://hdl.handle.net/10468/46
dc.identifier.volume44en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineersen
dc.relation.urihttp://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4717618&isnumber=4717307
dc.rights© 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEEen
dc.subjectdc–dc power conversionen
dc.subjectmonolithic integrated circuitsen
dc.subjectthin film inductorsen
dc.subject.lcshDC-to-DC convertersen
dc.subject.lcshThin-film circuitsen
dc.titleThin-film-integrated power inductor on Si and its performance in an 8-MHz buck converteren
dc.typeArticle (peer-reviewed)en
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