Single phase surface mount swing inductor component and methods of fabrication
AssigneeEaton Intelligent Power Limited
InventorsYipeng Yan, Dengyan Zhou
Life of this patent
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Abstract
An inductor component includes a conductive coil configured to establish surface mount connections with a circuit board. A magnetic core structure receives and encloses first and second legs of the conductive coil, and first and second physical gaps are respectively formed in the magnetic core structure and are located to respectively intersect a flux path generated by current flow in only one of the elongated first or second legs. By virtue of the pair of physical gaps the inductor component operates as a swing-type inductor component with multiple steps of inductance roll off.
Claims12
An inductor component for power supply circuitry implemented on a circuit board, the inductor component comprising:
- a conductive coil configured to establish surface mount connections to a single phase of the power supply circuitry, the conductive coil including elongated first and second legs each having a rectangular cross section, the elongated first and second legs further being spaced apart but extending parallel to one another;
- and
- a magnetic core structure receiving and enclosing each of the elongated first and second legs of the conductive coil, the magnetic core structure being defined by a bottom wall abutting the circuit board, a plurality of exterior side walls extending above the bottom wall and being spaced from the elongated first and second legs, and a plurality of interior side walls extending above the bottom wall while being adjacent to and surrounding the respective elongated first and second legs, wherein the magnetic core structure is a single piece magnetic structure, and wherein the magnetic core structure comprises a first physical gap and a second physical gap;
- wherein first and second physical gaps are respectively formed in the magnetic core structure, each of the first and second physical gaps extending incompletely through a respective one of an opposing pair of the interior side walls, and each of the first and second physical gaps being located to respectively intersect a flux path generated by current flow in one of the elongated first or second legs.
Dependencies are inferred from the claim text.