Planar grooved power inductor structure and method
First Claim
1. A method for manufacturing an inductor comprising:
- a) forming a first group of one or more grooves formed on a first side of a planar ferrite core;
b) forming a second group of two or more parallel grooves formed on a second side of the ferrite core, wherein the grooves in the first and second groups are oriented such that each groove in the first group overlaps with one or two corresponding grooves in the second group;
c) forming one or more vias communicating through the ferrite core between the first and second sides of the ferrite core, wherein each of via is located where a groove in the first group overlaps with a grooves in the second group; and
d) disposing a conductive material in the first and second groups of grooves and the vias.
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Abstract
An inductor may include a planar ferrite core. A first group of one or more grooves is formed in a first side of the ferrite core. A second group of two or more grooves is formed in a second side of the ferrite core. The grooves in the first and second groups are oriented such that each groove in the first group overlaps with two corresponding grooves in the second group. A first plurality of vias communicates through the ferrite core between the first and second sides of the ferrite core. Each via is located where a groove in the first group overlaps with a groove in the second group. A conductive material is disposed in the first and second groups of grooves and in the vias to form an inductor coil.
37 Citations
11 Claims
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1. A method for manufacturing an inductor comprising:
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a) forming a first group of one or more grooves formed on a first side of a planar ferrite core; b) forming a second group of two or more parallel grooves formed on a second side of the ferrite core, wherein the grooves in the first and second groups are oriented such that each groove in the first group overlaps with one or two corresponding grooves in the second group; c) forming one or more vias communicating through the ferrite core between the first and second sides of the ferrite core, wherein each of via is located where a groove in the first group overlaps with a grooves in the second group; and d) disposing a conductive material in the first and second groups of grooves and the vias. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification