Abstract
Magnetic core materials of higher performance than ferrite materials in the 0.5-10 MHz frequency range are investigated. The performance characteristics 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. Two highly laminated prototypes consisting of 70 and 105 laminates of 5 µm thick nickel-iron have achieved a power output efficiency of 92% at 0.5 MHz with power densities of 33 and 49 W/cm3, respectively. A design methodology based on material properties and device specifications is proposed for the manufacture of performant microinductors. Issues surrounding microinductor design and performance are discussed. © 2009 IEEE.
Original language | English |
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Article number | 5170214 |
Pages (from-to) | 3055-3063 |
Number of pages | 9 |
Journal | IEEE Transactions on Magnetics |
Volume | 45 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2009 |
Keywords
- DC-DC power conversion
- Electrodeposition
- Magnetic films
- Microinductor