公开(公告)号：US12020839B2

公开(公告)日：2024-06-25

申请号：US17342119

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke Kunitsuka ,  Keigo Higashida ,  Emi Ito

IPC: H01F17/04 ,  H01F17/00 ,  H01F27/28 ,  H01F27/29 ,  H01F27/30

CPC classification number: H01F17/045 ,  H01F27/2828 ,  H01F27/292 ,  H01F27/306 ,  H01F2017/0093

Abstract: Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.

公开(公告)号：US11817844B2

公开(公告)日：2023-11-14

申请号：US18088674

申请日：2022-12-26

Applicant: TDK Corporation

Inventor： Yugo Asai ,  Tsutomu Kobayashi ,  Daisuke Urabe ,  Hiroshi Suzuki ,  Emi Ito ,  Toshio Tomonari

IPC: H03H7/42 ,  H01F27/28 ,  H01F17/00 ,  H03H7/09 ,  H03H1/00 ,  H01F27/06 ,  H01F17/04 ,  H01F27/00

CPC classification number: H03H7/427 ,  H01F17/04 ,  H01F17/045 ,  H01F27/006 ,  H01F27/06 ,  H01F27/2823 ,  H03H1/00 ,  H03H7/09 ,  H01F2017/0093 ,  H03H2001/0035 ,  H03H2001/0092

Abstract: Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.

公开(公告)号：US11563415B2

公开(公告)日：2023-01-24

申请号：US16236562

申请日：2018-12-30

Applicant: TDK Corporation

Inventor： Yugo Asai ,  Tsutomu Kobayashi ,  Daisuke Urabe ,  Hiroshi Suzuki ,  Emi Ito ,  Toshio Tomonari

IPC: H03H7/42 ,  H01F27/28 ,  H01F17/00 ,  H03H7/09 ,  H03H1/00 ,  H01F27/06 ,  H01F17/04 ,  H01F27/00

Abstract: Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.

公开(公告)号：US10389328B2

公开(公告)日：2019-08-20

申请号：US15723392

申请日：2017-10-03

Applicant: TDK Corporation

Inventor： Tsutomu Kobayashi ,  Toshio Tomonari ,  Emi Ito ,  Yuma Komaya

IPC: H03H7/09 ,  H03H7/42 ,  H01F19/00 ,  H03H1/00

Abstract: Disclosed herein is a differential mode filter that includes first and second terminal electrodes provided on a first flange part of a core, and first and second wires wound around a winding core part of the core in an opposite direction to each other and connected respectively to the first and second terminal electrodes. The first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first, second, and third crossing portions that are first, second, and third occurrences counting from the one end of the first and second wires, respectively. A first crossing angle between the first and second wires at the first crossing portion is larger than at least one of second and third crossing angles between the first and second wires at the second and third portions, respectively.

公开(公告)号：US10277193B2

公开(公告)日：2019-04-30

申请号：US15605623

申请日：2017-05-25

Applicant: TDK Corporation

Inventor： Toshio Tomonari ,  Tsutomu Kobayashi ,  Emi Ito ,  Yuma Komaya

IPC: H05K1/18 ,  H01F27/38 ,  H03H7/42 ,  H01F27/28 ,  H01F27/29 ,  H03H1/00 ,  H05K1/11 ,  H05K1/02 ,  H01F17/00

Abstract: Disclosed herein is an electronic circuit module that includes a circuit board and a common mode filter mounted on the circuit board. The common mode filter includes first and second terminal electrodes constituting a first pair of terminal electrodes and third and fourth electrodes constituting a second pair of terminal electrodes. The circuit board includes: a first wiring layer having first, second, third, and fourth land patterns connected to the first, second, third, and fourth terminal electrodes, respectively, and first, second, third, and fourth wiring patterns connected to the first, second, third, and fourth land patterns, respectively; and a second wiring layer having a ground pattern that overlaps the first, second, third, and fourth wiring patterns without overlapping the first and second land patterns.

公开(公告)号：US20170301455A1

公开(公告)日：2017-10-19

申请号：US15483099

申请日：2017-04-10

Applicant: TDK Corporation

Inventor： Tsutomu KOBAYASHI ,  Toshio Tomonari ,  Emi Ito ,  Yuma Koyama

IPC: H01F27/28 ,  H03H1/00 ,  H01F27/24

CPC classification number: H01F27/2823 ,  H01F17/045 ,  H01F19/04 ,  H01F27/24 ,  H01F2027/2838 ,  H03H1/00 ,  H03H2001/005 ,  H03H2001/0092

Abstract: Disclosed herein is a differential mode filter including a core including a winding core part, a first wire wound around the winding core part in a first winding direction, and a second wire wound around the winding core part in a second winding direction opposite to the first winding direction. The winding core part includes first and second winding surfaces. A first crossing angle between the first and second wires that cross a plurality of times on the first winding surface is smaller than that a second crossing angle between the first and second wires that cross a plurality of times on the second winding surface.

公开(公告)号：US20170288626A1

公开(公告)日：2017-10-05

申请号：US15461303

申请日：2017-03-16

Applicant: TDK Corporation

Inventor： Tsutomu KOBAYASHI ,  Toshio Tomonari ,  Emi Ito ,  Yuma Koyama

IPC: H03H1/00 ,  H01F27/24 ,  H01F27/28

CPC classification number: H03H1/00 ,  H01F5/00 ,  H01F17/045 ,  H01F27/006 ,  H01F27/2823 ,  H01F41/069 ,  H01F2017/0093 ,  H03H7/427 ,  H03H2001/0021 ,  H03H2001/0035 ,  H03H2001/0092

Abstract: Disclosed herein is a common mode filter that includes first and second terminal electrodes provided on the first flange part, third and fourth terminal electrodes provided on the second flange part, a first wire wound around the winding core part and having one end connected to the first terminal electrode and other end connected to the third terminal electrode, and a second wire wound around the winding core part and having one end connected to the second terminal electrode and other end connected to the fourth terminal electrode. The winding core part includes a first winding region, a second winding region, and a third winding region positioned between the first and second winding regions in the axial direction. The first and second wires are bifilar-wound in the first and second winding regions and layer-wound in the third winding region.