Analytical expressions for inductances of 3D air core inductors for integrated power supply

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dc.contributor.authorShetty, Chandra
dc.contributor.authorKandeel, Youssef
dc.contributor.authorYe, Liang
dc.contributor.authorO'Driscoll, Séamus
dc.contributor.authorMcCloskey, Paul
dc.contributor.authorDuffy, Maeve
dc.contributor.authorÓ Mathúna, S. Cian
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2022-02-09T12:06:54Z
dc.date.available2022-02-09T12:06:54Z
dc.date.issued2021-05-06
dc.description.abstractThis work presents analytical expressions for the DC inductance of 3D air core inductors with circular cross section pillars (CCSP) and rectangular cross section pillars (RCSP). We consider the following four types of inductor structures: (1) a toroid with CCSP; (2) a toroid with RCSP; (3) a solenoid with RCSP; and (4) a solenoid with CCSP. For each type, a unique analytical model is developed for obtaining DC inductance. High frequency (1-100 MHz) effects on inductance are also discussed. The inductance values predicted by the proposed analytical models of the first three types of inductor structures are in an acceptable agreement with numerical Finite Element Analysis (FEA) solutions, where the maximum difference is 7.3%. Also, our analytical model for the fourth type inductor reduces the error, when correlated with FEA inductance value, up to 6× compared to previously published models. A comparison of results using proposed analytical expressions with published measured values as well as our measurement data demonstrates error ranging from 0.5 to 16.2%, while conventional formulae show errors of up to 143%. The results of the proposed models could serve as a good initial estimate for power supply on chip (PwrSoC) and power supply in package (PSiP) applications.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationShetty, C., Kandeel, Y., Kulkarni, S., Ye, L., O’Driscoll, S., McCloskey, P., Duffy, M. and Mathúna, C. Ó. (2021) 'Analytical expressions for inductances of 3D air core inductors for integrated power supply', IEEE Journal of Emerging and Selected Topics in Power Electronics, In Press, doi: 10.1109/JESTPE.2021.3077203en
dc.identifier.doi10.1109/JESTPE.2021.3077203en
dc.identifier.eissn2168-6785
dc.identifier.endpage21en
dc.identifier.issn2168-6777
dc.identifier.journaltitleIEEE Journal of Emerging and Selected Topics in Power Electronicsen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/12536
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/15/IA/3180/IE/Advanced Integrated Power Magnetics Technology- From Atoms to Systems/en
dc.rights© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectInductance modelen
dc.subject3D solenoid inductoren
dc.subject3D toroidal inductoren
dc.subjectSelf-inductanceen
dc.subjectMutual inductanceen
dc.subjectPartial inductanceen
dc.subjectLoop inductanceen
dc.subjectThrough silicon via (TSV)en
dc.subjectAir coreen
dc.subjectPower supply on chip (PwrSoC)en
dc.subjectPower supply in package (PSiP)en
dc.titleAnalytical expressions for inductances of 3D air core inductors for integrated power supplyen
dc.typeArticle (peer-reviewed)en
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