Texas Instruments Incorporated
MAGNETIC FLUX CONCENTRATOR FOR OUT-OF-PLANE DIRECTION MAGNETIC FIELD CONCENTRATION

Abstract:

A structure includes a substrate which includes a surface. The structure also includes a horizontal-type Hall sensor positioned within the substrate and below the surface of the substrate. The structure further includes a protective overcoat layer positioned above the surface of the substrate, and a sphere-shaped magnetic concentrator positioned above the protective overcoat layer. Instead of or in addition to the sphere-shaped magnetic concentrator, the structure may include an embedded magnetic concentrator positioned within the substrate and below the horizontal-type Hall sensor.