Feasible evaluations of coupled multilayer chip inductor for POL converter

Jun Imaoka, Shota Kimura, Yuki Itoh, Masayoshi Yamamoto, Michiaki Suzuki, Kenji Kawano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Point of load (POL) converters are required smaller size and high efficiency performance in IT industrial applications, etc. Interleaved technique, magnetic integration techniques and application of GaNFETs are well known as good approaches to satisfy these demands. Although coupled inductors for POL converters have been proposed in several studies, a coupled multilayer chip inductor has not examined because of the difficulty of its construction. In this paper, a novel coupled multilayer chip inductor for interleaved POL converters is proposed. This novel coupled inductor has a winding pair with inversely coupled in the magnetic core. Further, magnetic material of the coupled inductor is Fe-based metal composite powder (Fe-Si-Cr). In addition, Fe-based powder in the magnetic core has been processed electrical insulation by highly crystallized oxide nano-layer in order to reduce eddy-current losses. Its high efficiency performance is evaluated by interleaved step down chopper circuit prototype using normally off typed GaNFETs with 1MHz switching frequency.

Original languageEnglish
Title of host publication2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
PublisherIEEE Computer Society
Pages883-890
Number of pages8
ISBN (Print)9781479927050
DOIs
Publication statusPublished - 2014
Event7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014 - Hiroshima, Japan
Duration: May 18 2014May 21 2014

Publication series

Name2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014

Other

Other7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
CountryJapan
CityHiroshima
Period5/18/145/21/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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