Patent ID: 11955268
Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A stacked magnetic core for an electrical component, the stacked magnetic core comprising:
a plurality of magnetic films and a plurality of adhesive films stacked in an alternating fashion such that each magnetic film is electrically isolated from each other magnetic film,
the plurality of magnetic films comprising a first magnetic film, a second magnetic film, and a third magnetic film,
the plurality of adhesive films comprising a first adhesive film disposed on an upper surface of the first magnetic film and a second adhesive film disposed on an upper surface of the second magnetic film,
the second magnetic film being disposed on the first adhesive film,
the third magnetic film being disposed on the second adhesive film,
the first adhesive film adhering the first magnetic film to the second magnetic film,
the second adhesive film adhering the second magnetic film to the third magnetic film,
a footprint of the stacked magnetic core, measured in a first plane having the upper surface of the first magnetic film, being 1 square millimeters (mm2) or less,
the stacked magnetic core having an inductance density of at least 8 nanohenries per square millimeter (nH/mm2),
the stacked magnetic core having a coercivity of no more than 1 Oersted (Oe),
each magnetic film of the plurality of magnetic films being a cobalt-nickel-iron (CoNiFe) film,
a thickness of each adhesive film of the plurality of adhesive films, measured in a first direction perpendicular to the first plane, being in a range of from 0.1 micrometers (μm) to 1 μm,
a thickness of each magnetic film of the plurality of magnetic films, measured in the first direction, being in a range of from 0.5 μm to 2 μm, and
the stacked magnetic core further comprising: a coil wrapped around the plurality of magnetic films; and a magnetic paste disposal around the coil to form a closed magnetic loop.