公开(公告)号：US20170316869A1

公开(公告)日：2017-11-02

申请号：US15525491

申请日：2015-06-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshiharu OMORI ,  Takeshi ICHIHARA ,  Kenji UENO

IPC: H01F27/28 ,  H03H7/42 ,  H03H1/00

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F2017/0073 ,  H01F2017/0093 ,  H01F2027/2809 ,  H03H1/00 ,  H03H7/427 ,  H03H2001/0085 ,  H03H2001/0092

Abstract: A common mode noise filter includes a first coil and a second coil. The first coil is formed in a plurality of insulating layers and includes a spiral first coil conductor and a spiral second coil conductor. The second coil is formed in the plurality of insulating layers and includes a spiral third coil conductor and a spiral fourth coil conductor. The first and third coil conductors are magnetically coupled to form a first common mode filter unit, and the second and fourth coil conductors are magnetically coupled to form a second common mode filter unit. As viewed from above, a first direction in which currents flow through the first and third coil conductors in the first common mode filter unit is opposite to a second direction in which currents flow through the second and fourth coil conductors in the second common mode filter unit.

公开(公告)号：US20180286563A1

公开(公告)日：2018-10-04

申请号：US15544647

申请日：2016-01-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsushi SHINKAI ,  Kenji UENO

IPC: H01F27/28 ,  H01F27/32

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/323 ,  H01F2017/0093 ,  H01F2027/2809

Abstract: A common mode noise filter of the present disclosure includes: a first insulating layer; a second insulating layer formed under the first insulating layer; a first coil including a first coil conductor and a second coil conductor, the first coil conductor being electrically connected to the second coil conductor; a second coil including a third coil conductor and a fourth coil conductor, the third coil conductor being electrically connected to the fourth coil conductor; and a third coil including a fifth coil conductor and a sixth coil conductor, the fifth coil conductor being electrically connected to the sixth coil conductor. Further, the first coil conductor, the third coil conductor, and the fifth coil conductor are sequentially formed on the first insulating layer from the outer side. The sixth coil conductor, the fourth coil conductor, and the second coil conductor are sequentially formed on second insulating layer from the outer side.