Powder core material coupled inductors and associated methods

摘要

A multi-phase coupled inductor includes a magnetic core formed of a powder magnetic material and first, second, third, and fourth terminals. The coupled inductor further includes a first winding forming at least one turn and at least partially embedded in the core and a second winding forming at least one turn and at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.

主权项

1. A multi-phase coupled inductor, comprising:
a magnetic core formed of a powder magnetic material; first, second, third, and fourth terminals; a first winding forming at least a first loop, the first loop embedded in the core, the first winding electrically coupled between the first and second terminals; and a second winding forming at least a second loop, the second loop embedded in the core, the second winding electrically coupled between the third and fourth terminals, wherein:
each of the first and second loops are formed around a common axis, when seen looking perpendicular to a plane parallel to the first and second loops,a first portion of the magnetic core separates the first loop from the second loop along the common axis, andat least part of the first portion of the magnetic core that includes the common axis has a different magnetic characteristic from at least one other portion of the magnetic core.