Characterization of core materials for microscale magnetic components operating in the megahertz frequency range

David Flynn, Anthony Toon, Les Allen, Resham Dhariwal, M. P Y Desmulliez

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Suitable materials forming the core of microscale magnetic components have been characterized for the application of magnetic passive components in the 0.5-10 MHz frequency range. The performance of electrodeposited nickel-iron, cobalt-iron-copper alloys and the commercial alloy Vitrovac 6025 have been assessed through their inclusion within a custom-made solenoid microinductor. Inductance values ranging from 0.3 to 120 µH with component power efficiency above 90% have been measured. Although the present inductor, at 500 kHz, achieves 77% power efficiency for 24.7W/cm3 power density, an optimized process predicts a power efficiency of 97% for 30.83 W/cm3 power density. © 2007 IEEE.

Original languageEnglish
Pages (from-to)3171-3180
Number of pages10
JournalIEEE Transactions on Magnetics
Volume43
Issue number7
DOIs
Publication statusPublished - Jul 2007

Keywords

  • DC-DC power conversion
  • Electrodeposition
  • Magnetic films
  • Microinductor

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