INTEGRATED INDUCTOR

摘要

An integrated inductor comprises a first winding (C1) and a second winding (C2); a first internal magnetic core in the first winding (C1) and a second internal magnetic core in the second winding (C2); and at least one external magnetic core (M) outside the first winding (C1) and the second winding (C2), used for being connected to end portions of the first and second internal magnetic cores to form a magnetic path, the external magnetic core (M) being formed by multiple sub-magnetic cores joint with each other; the magnetic conductivity of at least one sub-magnetic core of the multiple sub-magnetic cores is greater than the magnetic conductivity of other sub-magnetic cores, and the at least one sub-magnetic core at least covers a part of end faces of the first internal magnetic core and the second internal magnetic core. The integrated inductor can alleviate the phenomenon of flux leakage, and can reduce costs of the magnetic cores.

主权项

1. An integrated inductor, comprising:
a first winding and a second winding; a first internal core located inside the first winding and a second internal core located inside the second winding; and at least one external core comprising a plurality of sub-cores and located outside the first winding and the second winding, the at least one external core, the first internal core and the second internal core forming a magnetic circuit, wherein at least one sub-core of the plurality of sub-cores has a higher magnetic permeability than at least one other sub-core of the plurality of sub-cores, and wherein the at least one sub-core at least partially overlaps end faces of respective ones of the first internal core and the second internal core.