Low loss thin film magnetics for high frequency power supplies

  • Santosh Kulkarni
  • , Ningning Wang
  • , Zoran Pavlovic
  • , Dai Li
  • , Paul McCloskey
  • , George Young
  • , Cian O. Mathuna

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

Advances in wide bandgap semiconductor technologies have enabled increased switching frequencies, which is critical for reducing size of passive components in power supplies. These advances in power conversion technologies have highlighted the need for development of new class of magnetics components (inductors, transformers etc) with lower footprint and higher efficiency. Presently, the sizes of these magnetic components have been limited due to the use of low flux density ferrite as a core material. In this paper, we present the assembly and working of a nanocrystalline thin film inductor with low loss performance as a replacement for ferrite based inductors. The performance of the thin film inductor is characterized in a commercial 500 kHz evaluation board. The paper also shows the significant reduction in footprint with the thin film inductor using an oxide as insulation between magnetic layers.

Original languageEnglish
Title of host publication2014 16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479930159
DOIs
Publication statusPublished - 25 Sep 2014
Event2014 16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014 - Lappeenranta, Finland
Duration: 26 Aug 201428 Aug 2014

Publication series

Name2014 16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014

Conference

Conference2014 16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014
Country/TerritoryFinland
CityLappeenranta
Period26/08/1428/08/14

Keywords

  • High efficiency thin film inductors
  • high frequency power supplies
  • nanocrystalline thin film cores
  • power electronics
  • thin film magnetics

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