Patent ID: 8975995
Filing Date: 2015-03-10
Classification: H01F,H02M

Abstract:
1. A coupled inductor, comprising: a ladder magnetic core including first and second rails and N rungs, each of the N rungs connecting the first and second rails, N being an integer greater than one; a first common leakage plate formed of a magnetic material; a second common leakage plate separate from the first common leakage plate and formed of magnetic material; and N windings, each of the N windings being wound around a respective one of the N rungs, each of the N windings including a respective first portion and a respective second portion, at least two of the N windings being wrapped at least partially around the first common leakage plate such that the respective first portion of the winding is disposed between an outer surface of the first rail and an outer surface of the first common leakage plate, and at least two of the N windings being wrapped at least partially around the second common leakage plate such that the respective second portion of the winding is disposed between an outer surface of the second rail and an outer surface of the second common leakage plate.