Title :
Planar inductors on magnetic substrates
Author :
Roshen, Waseem A. ; Turcotte, David E.
Author_Institution :
ITT PowerSyst. Corp., Tucson, AZ, USA
fDate :
11/1/1988 12:00:00 AM
Abstract :
Using the method of current images, a simple formula is derived that describes the enhancement effect of a thick magnetic substrate of permeability μ on the inductance of planar inductors. It is shown that a maximum of 100% enhancement of the inductance over the corresponding air-core value can be obtained. This occurs in the limit μ≫1, in which case the inductance becomes independent of μ. Previous and new experimental data as well as a finite-element result are found to be in very good agreement with the theoretical result
Keywords :
inductors; magnetic permeability; substrates; air-core value; current images; enhancement effect; finite-element result; inductance; permeability; planar inductors; thick magnetic substrate; Conductors; Current distribution; Inductance; Inductors; Magnetic cores; Permeability; Slabs; Spirals; Substrates; Thermal management;
Journal_Title :
Magnetics, IEEE Transactions on
