Patent 9336941 was granted and assigned to Volterra Semiconductor on May, 2016 by the United States Patent and Trademark Office.
A multi-row coupled inductor has length, width, and height and includes a magnetic core including (1) opposing first and second plates separated from each other in the height direction, and (2) one or more pairs of coupling teeth. Each of the one or more pairs is separated from each other in the widthwise direction, and each of the one or more pairs includes a first coupling tooth and a second coupling tooth separated from and opposing each other in the lengthwise direction. The multi-row coupled inductor further includes: (1) a respective first winding wound around the first coupling tooth, and (2) a respective second winding wound around the second coupling tooth. The first winding mirrors the second winding in each of the one or more pairs, when seen looking toward the magnetic core cross-sectionally in the height direction.