US Patent No. 11,116,081

LAMINATED MAGNETIC CORE INDUCTOR WITH MAGNETIC FLUX CLOSURE PATH PARALLEL TO EASY AXES OF MAGNETIZATION OF MAGNETIC LAYERS


Patent No. 11,116,081
Issue Date September 07, 2021
Title Laminated Magnetic Core Inductor With Magnetic Flux Closure Path Parallel To Easy Axes Of Magnetization Of Magnetic Layers
Inventorship Noah Sturcken, New York, NY (US)
Ryan Davies, New York, NY (US)
Michael Lekas, New York, NY (US)
Assignee Ferric Inc., New York, NY (US)

Claim of US Patent No. 11,116,081


1. An inductor comprising:a planar laminated magnetic core comprising an alternating sequence of (a) a magnetic layer having a thickness of about 100 angstroms to about 10,000 angstroms and (b) a non-magnetic layer having a thickness of about 10 angstroms to about 2,000 angstroms, the thicknesses of the magnetic and non-magnetic layers measured along an axis that is orthogonal to a principal plane of the planar magnetic core,
wherein the planar laminated magnetic core is configured so that a magnetic flux passes through a first magnetic layer in a first direction that is parallel to a first easy axis of magnetization of the first magnetic layer and the magnetic flux passes through a second magnetic layer in a second direction that is parallel to a second easy axis of magnetization of the second magnetic layer, wherein the second magnetic layer is a neighboring magnetic layer of the first magnetic layer, and the first direction is opposite to the second direction, whereby the magnetic flux has a closed path that extends through the first and second magnetic layers parallel to the first and second easy axes of magnetization, respectively;
a first orthogonal magnetic layer disposed laterally from the planar magnetic core, the first orthogonal magnetic layer orthogonal to the principal plane; and
a conductive winding that turns around in a generally spiral manner on the outside of said planar laminated magnetic core;
a second orthogonal magnetic layer disposed laterally from the planar magnetic core such that the planar magnetic core is disposed between the first and second orthogonal magnetic layers, the second orthogonal magnetic layer orthogonal to the principal plane;
wherein the magnetic flux passes through the first orthogonal magnetic layer in a first orthogonal direction that is parallel to an easy axis of magnetization of the first orthogonal magnetic layer and the magnetic flux passes through the second orthogonal magnetic layer in a second orthogonal direction that is parallel to an easy axis of magnetization of the second orthogonal magnetic layer, the first orthogonal direction opposite to the second orthogonal direction.