Method for making magnetic components with M-phase coupling, and related inductor structures
AssigneeVolterra Semiconductor Corporation
InventorsAlexandr Ikriannikov, Anthony Stratakos, Charles R. Sullivan, Aaron M. Schultz, Jieli Li
Life of this patent
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Abstract
An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
Claims20
A coupled inductor, comprising:
- a ladder magnetic core including two rails and M rungs, M being an integer greater than one, each of the M rungs having a rung width defined by a distance of the respective rung spanning between the two rails;
- and
- M windings, each of the M windings wound around a respective one of the M rungs such that a width of a single turn of the winding, in a direction of the rung width of the respective rung, is greater than a thickness of the winding.
A coupled inductor, comprising:
- a magnetic core, including:
- first and second end magnetic elements separated by a linear separation distance, and
- M legs each connected to the first and second end magnetic elements, M being an integer greater than one, each of the M legs having a respective length, width, and height, the width being defined by the linear separation distance at the leg;
- and
- M windings, each of the M windings wound around the width of a respective one of the M legs such that each of the M windings has a wound shape conforming to an outer boundary of the respective leg;
- the wound shape of a first one of the M windings including a first planar section substantially parallel to a plane defined by the respective length and width of a first one of the M legs;
- the wound shape of a second one of the M windings including a second planar section substantially parallel to a plane defined by the respective length and width of a second one of the M legs;
- and
- the first planar section being substantially parallel to the second planar section.
A coupled inductor, comprising:
- a magnetic core;
- and
- first and second windings, each winding having a substantially square cross section orthogonal to a lengthwise direction of the winding from a first end of the winding to a second end of the winding, each winding wound around a common leg of the magnetic core and through a passageway formed by the magnetic core, the first and second windings separated by a linear separation distance throughout the passageway.
A coupled inductor, comprising:
- a magnetic core, including:
- first and second end magnetic elements, and
- M legs each connected to the first and second end magnetic elements, M being an integer greater than one;
- and
- M windings, each winding having a substantially square cross section orthogonal to a lengthwise direction of the winding from a first end of the winding to a second end of the winding, each of the M windings wound around a respective one of the M legs.
Dependencies are inferred from the claim text.