Inductor with laminated yoke
First Claim
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1. A thin film inductor, comprising:
- a bottom yoke;
a top yoke above the bottom yoke;
one or more conductors passing between the yokes and separated therefrom by an insulating material;
wherein at least one of the yokes has a laminate structure comprising a first ferromagnetic layer, a nonmagnetic layer above the first ferromagnetic layer, and a second ferromagnetic layer above the first ferromagnetic layer, wherein a width of the first ferromagnetic layer is different than a width of the second ferromagnetic layer in a direction parallel to a plane of deposition of the first ferromagnetic layer;
wherein the first ferromagnetic layer has a greater width than the second ferromagnetic layer, wherein the second ferromagnetic layer is positioned above the first ferromagnetic layer.
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Abstract
A thin film inductor having yokes, one or more of which is laminated, and one or more conductors passing between the yokes. The laminated yoke or yokes help reduce eddy currents and/or hysteresis losses.
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Citations
15 Claims
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1. A thin film inductor, comprising:
- a bottom yoke;
a top yoke above the bottom yoke;
one or more conductors passing between the yokes and separated therefrom by an insulating material;
wherein at least one of the yokes has a laminate structure comprising a first ferromagnetic layer, a nonmagnetic layer above the first ferromagnetic layer, and a second ferromagnetic layer above the first ferromagnetic layer, wherein a width of the first ferromagnetic layer is different than a width of the second ferromagnetic layer in a direction parallel to a plane of deposition of the first ferromagnetic layer;
wherein the first ferromagnetic layer has a greater width than the second ferromagnetic layer, wherein the second ferromagnetic layer is positioned above the first ferromagnetic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a bottom yoke;
Specification