Title :
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
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;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157044
