Solenoid microinductors with anisotropic nanolaminated CoNiFe cores for high-frequency DC-DC power conversion

Author

Kim, J. ; Kim, M. ; Allen, M.

Author_Institution

Electr. & Comput. Eng., Georgia Inst. of Technol., Lansdowne, PA, USA

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Anisotropic nanolaminated CoNiFe cores are integrated in this study with solenoid microinductors for use in high-frequency DC-DC power converters. These anisotropic magnetic cores exhibit improved magnetic properties (e.g., higher permeability and lower loss) when flux flows in the direction parallel to the hard axis in the MHz frequency range and above. The developed microinductor exhibited a constant inductance of 600 nH up to 10 MHz with a peak quality factor over 20 at 4 MHz, demonstrating improved high frequency characteristics from induced magnetic anisotropy.

Keywords

DC-DC power convertors; Q-factor; cobalt alloys; inductance; iron alloys; laminations; magnetic anisotropy; magnetic cores; magnetic leakage; magnetic permeability; nickel alloys; power inductors; solenoids; CoNiFe; anisotropic magnetic cores; anisotropic nanolaminated cores; frequency 10 MHz; frequency 4 MHz; high-frequency DC-DC power converters; inductance; magnetic anisotropy; magnetic loss; magnetic permeability; quality factor; solenoid microinductors; DC-DC power converters; Fabrication; Inductors; Magnetic cores; Perpendicular magnetic anisotropy; Solenoids;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157044

Filename

7157044