Patent ID: 6990725
Filing Date: 2006-01-31
Classification: H01F,H01L,Y10T

Abstract:
1. A method of fabricating a planar inductive component having one or more conductive windings, a magnetic core co-linear with and surrounding all windings, and an insulator separating each winding from any other winding and from the magnetic core, the method comprising: providing a component support member defining a non-magnetic top surface; sequentially overlaying at least part of the top surface of the support member with a first layer of magnetic material, a first layer of insulating material, and a layer of conductive material; removing portions of the conductive material layer down to the underlying insulating material to leave the inductive component winding; overlaying the exposed first layer of insulating material and the winding with a second layer of insulating material; creating spaced, elongated, parallel deposition channels through both layers of insulating material to the underlying first layer of magnetic material, the deposition channels on opposite sides of and spaced from the winding; and overlaying the exposed insulating material and the exposed first layer of magnetic material with magnetic material, to complete the magnetic core.