Patent ID: 6404317
Filing Date: 2002-06-11
Classification: H01F,Y10T

Abstract:
A semiconductor planar magnetic element for use in semiconductor fabrication comprising:a semiconductor substrate; and a planar coil structure fabricated on said substrate, wherein said planar coil structure includes a plurality of planar coils covering a first predetermined area on said substrate, said plurality of planar coils each having first and second end portions wherein said first and second end portions are respectively connected to first and second outer terminals, and an inductance of each of said plurality of planar coils is different from others of said plurality of planar coils according to a predetermined relationship corresponding to a variable inductance range of said magnetic element, wherein said first and second outer terminals are located outside of said first predetermined area, wherein each of first and second outer terminals, each of said first and second end portions and said plurality of planar coils are all arranged in the same plane, and wherein connections to and between the plurality of coils are all made on a same side of the substrate.