Patent ID: 6114939
Filing Date: 2000-09-05
Classification: H01F

Abstract:
A planar interleaved stacked layer magnetic circuit element structure comprising:a first printed circuit layer containing copper used to form a part of a winding turn,a first magnetic core layer, placed adjacent to and parallel to said first printed circuit layer,a second printed circuit layer containing copper used to form another part of said winding turn placed adjacent to and parallel to said first magnetic core layer,a second magnetic core layer, placed adjacent to and parallel to said second printed circuit layer,legs consisting of a magnetic core material, for magnetically coupling said first magnetic core layer to said second magnetic core layer, thereby forming a loop of magnetic core around said second printed circuit layer,electrical conducting means for electrically connecting said first printed circuit layer to said second printed circuit layer to complete said winding turn,whereby said first and second magnetic core layers, together with said legs, form a magnetic core structure, and said first and second printed circuit layers, together with said electrically conducting means, form an electrically conductive winding for carrying electrical current that induces magnetic flux in said magnetic core structure, and said magnetic core structure together with said electrically conductive winding forms a planar interleaved stacked layer magnetic circuit element structure with the benefits of high space efficiency and low AC winding losses.