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US 2024/0258014 A1Published application
Embedded magnetic device including multilayer windings
AssigneeMurata Manufacturing Co., Ltd.
InventorsTakayuki TANGE, Scott Andrew PARISH
Life of this patent
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Abstract
A device includes a substrate; a magnetic core in the substrate, including a hole, and divided into a first half and a second half opposite to the first half; a first winding extending through the hole and around the magnetic core; a second winding extending through the hole and around the magnetic core; and a third winding extending through the hole, around the magnetic core, and around a portion of the first winding. The first and the third windings only extend around the same half of the magnetic core. At least one first turn of the second winding extends around the second half of the magnetic core.
Claims15
An embedded magnetic component device comprising:
- an insulating substrate including a first side, a second side opposite the first side, and a cavity;
- a magnetic core included in the cavity and including an inner periphery and an outer periphery;
- a first electrical winding that extends through the insulating substrate and around the magnetic core;
- a second electrical winding that extends through the insulating substrate and around the magnetic core;
- a third electrical winding that extends through the insulating substrate and around the magnetic core;
- and
- a fourth electrical winding that extends through the insulating substrate and around the magnetic core, wherein
- each of the first, the second, the third, and the fourth electrical windings includes:
- upper traces located on the first side of the insulating substrate;
- lower traces located on the second side of the insulating substrate;
- inner conductive connectors extending through the insulating substrate adjacent to the inner periphery of the magnetic core, the inner conductive connectors respectively defining electrical connections between respective upper traces and respective lower traces;
- and
- outer conductive connectors extending through the insulating substrate adjacent to the outer periphery of the magnetic core, the outer conductive connectors respectively define electrical connections between respective first upper traces and respective first lower traces, and
- the first, the second, and the third electrical windings are closer to the magnetic core than the fourth electrical winding.
11 more elements
A method of manufacturing an embedded magnetic component device, the method comprising:
- forming a cavity in an insulating substrate that includes a first side and a second side opposite the first side;
- installing a magnetic core in the cavity, the magnetic core including an inner periphery and an outer periphery;
- forming a first electrical winding that extends through the insulating substrate and around the magnetic core;
- forming a second electrical winding that extends through the insulating substrate and around the magnetic core;
- forming a third electrical winding that extends through the insulating substrate and around the magnetic core;
- and
- forming a fourth electrical winding that extends through the insulating substrate and around the magnetic core;
- wherein
- each of the first, the second, the third, and the fourth electrical windings includes:
- upper traces located on the first side of the insulating substrate;
- lower traces located on the second side of the insulating substrate;
- inner conductive connectors extending through the insulating substrate adjacent to the inner periphery of the magnetic core, the inner conductive connectors respectively defining electrical connections between respective upper traces and respective lower traces;
- and
- outer conductive connectors extending through the insulating substrate adjacent to the outer periphery of the magnetic core, the outer conductive connectors respectively defining electrical connections between respective first upper traces and respective first lower conductive traces;
- and
- the first, the second, and the third electrical winding are closer to the magnetic core than the fourth electrical winding.
13 more elements
A device comprising:
- a substrate;
- a magnetic core in the substrate, including a hole, and divided into a first half and a second half opposite to the first half;
- a first winding extending through the hole and around the magnetic core;
- a second winding extending through the hole and around the magnetic core;
- and
- a third winding extending through the hole, around the magnetic core, and around a portion of the first winding;
- wherein
- the first and the third windings only extend around the first half of the magnetic core;
- and
- at least one first turn of the second winding extends around the second half of the magnetic core.
7 more elements
Dependencies are inferred from the claim text.