公开(公告)号：US20210257157A1

公开(公告)日：2021-08-19

申请号：US16794454

申请日：2020-02-19

Applicant: TDK CORPORATION

Inventor： Chen WANG ,  Satoshi SUGIMOTO ,  Leo YAO

IPC: H01F27/38 ,  H01F17/04 ,  H01F3/14 ,  H01F27/29 ,  H01F38/02

Abstract: A coil device includes a core and a plurality of coils arranged in the core. A distance of a second gap formed by portions of the core located inside at least one of the coils is larger than that of a first gap formed by other portions of the core located between the coils next to each other.

公开(公告)号：US20210257145A1

公开(公告)日：2021-08-19

申请号：US16794444

申请日：2020-02-19

Applicant: TDK CORPORATION

Inventor： Chen WANG ,  Satoshi SUGIMOTO ,  Leo YAO

IPC: H01F27/24 ,  H01F27/28

Abstract: A coil device includes a pair of first core and second core, a third core, and a pair of first coil and second coil. The third core is disposed next to the first core or the second core. The pair of first coil and second coil is each disposed between any two of the first core, the second core, and the third core next to each other. Plate surfaces of the first coil and the second coil are opposed to each other. Each of the first coil and the second coil is partly exposed in a lateral direction of the first core, the second core, or the third core.