Patent ID: 9721719
Date: 2017-08-01
CPC Classifications: H01F,H02M

Claim:
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; N first leakage plates separate from each other and formed of a magnetic material; N second leakage plates separate from each other 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 being wrapped at least partially around a respective one of the N first leakage plates such that a first portion of the winding is disposed on an outer surface of the first rail and the first leakage plate is disposed on the first portion of the winding, such that the first portion of the winding is disposed between the outer surface of the first rail and the outer surface of the first leakage plate, each of the N windings being wrapped at least partially around a respective one of the N second leakage plates such that a second portion of the winding is disposed between an outer surface of the second rail and an outer surface of the second leakage plate.