Twisted-core type low-profile coupled inductor
AssigneeAnalog Devices, Inc.
InventorsZhengrong Huang, Jindong Zhang, Zichen Miao
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Abstract
A device may include a coupled inductor structure comprising a first winding portion, a second winding portion, and a magnetic core structure. The magnetic core structure may include a first and second core piece that are at least partially cross-sectionally U-shaped. A first connecting core piece may be attached to a first portion of the first core piece to a first portion of the second core piece, and a second connecting core piece may attach a second portion of the first core piece to a second portion of the second core piece.
Claims11
A device including an inverse-coupled inductor, comprising:
- a first winding portion;
- a second winding portion;
- and
- a magnetic core structure comprising:
- an at least partially cross-sectionally U-shaped first core piece;
- an at least partially cross-sectionally U-shaped second core piece;
- a first connecting core piece, including a first feature configured for attaching a first portion of the first core piece to a first portion of the second core piece;
- and
- a second connecting core piece, formed as a discrete component different from the first connecting core piece, including a second feature configured for attaching a second portion of the first core piece to a second portion of the second core piece, wherein:
- the first winding portion is located in a first slot in the magnetic core structure formed between the attached first core piece, the first connecting core piece, and the second connecting core piece;
- the second winding portion is located in a second slot in the magnetic core structure formed between the attached second core piece, the first connecting core piece, and the second connecting core piece;
- the first connecting core piece attaches a lower portion of the first core piece to an upper portion of the second core piece;
- the second connecting core piece attaches an upper portion of the first core piece to a lower portion of the second core piece;
- and
- each of the first connecting core piece and the second connecting core piece includes a step structure.
A Trans-Inductor Voltage Regulator (TLVR) circuit, comprising:
- a first winding portion;
- a second winding portion;
- a third winding portion;
- a fourth winding portion;
- and
- a closed-loop magnetic core structure comprising
- an at least partially cross-sectionally U-shaped first core piece;
- an at least partially cross-sectionally U-shaped second core piece;
- a first connecting core piece, including a first feature configured for attaching a first portion of the first core piece to a first portion of the second core piece;
- and
- a second connecting core piece, formed as a discrete component different from the first connecting core piece, including a second feature configured for attaching a second portion of the first core piece to a second portion of the second core piece, wherein:
- a first portion of the first connecting core piece is attached to a first portion of the first core piece, and a second portion of the first connecting core piece is attached to a first portion of the second core piece;
- the first connecting core piece attaches a lower portion of the first core piece to an upper portion of the second core piece;
- a first portion of the second connecting core piece is attached to a second portion of the first core piece and a second portion of the second connecting core piece is attached to a second portion of the second core piece;
- the second connecting core piece attaches an upper portion of the first core piece to a lower portion of the second core piece;
- and
- each of the first connecting core piece and the second connecting core piece includes a step structure.
Dependencies are inferred from the claim text.