公开(公告)号：US20180350507A1

公开(公告)日：2018-12-06

申请号：US16055632

申请日：2018-08-06

Applicant: FDK CORPORATION

Inventor： Daisuke MATSUBAYASHI ,  Mikio KITAOKA ,  Kiyohisa YAMAUCHI ,  Minako SUZUKI

IPC: H01F27/28 ,  H01F17/00 ,  H01F17/04 ,  H01F41/04

CPC classification number: H01F17/00 ,  H01F41/04

Abstract: A laminated transformer includes a magnetic substance layer, a coil lamination stacked on the magnetic substance layer, the coil lamination having formed thereinside a primary coil and a secondary coil, the primary coil being wound spirally in convolutions in a stacking direction, the secondary coil being wound spirally in convolutions in the stacking direction and formed inside the primary coil, a magnetic substance filling inside of the secondary coil in the coil lamination, and a non-magnetic substance filling a region between the primary coil and the secondary coil and filling outside of the primary coil in the coil lamination.

公开(公告)号：US20160276093A1

公开(公告)日：2016-09-22

申请号：US14778430

申请日：2014-02-20

Applicant: FDK CORPORATION

Inventor： Daisuke MATSUBAYASHI ,  Mikio KITAOKA ,  Kiyohisa YAMAUCHI ,  Minako SUZUKI

IPC: H01F27/28 ,  H01F27/245

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/245 ,  H01F2017/0066 ,  H01F2027/2809

Abstract: A multilayer inductor for reducing a difference in inductance values and suppressing magnetic interference. Plural electrically insulating magnetic layers and conductive patterns are laminated, each of the conductive patterns being connected in sequence in the lamination direction, so that two coils having substantially the same number of turns and substantially the same coil diameter are formed, the two coils are in parallel such that each coil is a mirror image with respect to a virtual surface between the coils, and ends of each coil are located at an outer peripheral part on a side opposite to the virtual surface, an electrically insulating nonmagnetic pattern corresponding in shape to each of the conductive patterns is between the conductive patterns adjacent in the lamination direction, and at least one electrically insulating nonmagnetic layer is disposed only inside the coils in the lamination direction in place of the magnetic layers.

Abstract translation: 一种用于减小电感值差异并抑制磁干扰的多层电感器。 层压多个电绝缘磁性层和导电图案，每个导电图案在层叠方向上依次连接，从而形成具有大致相同匝数和基本上相同的线圈直径的两个线圈，两个线圈处于 平行，使得每个线圈相对于线圈之间的虚拟表面是镜像，并且每个线圈的端部位于与虚拟表面相对的一侧的外周部分，对应于每个线圈的形状的电绝缘非磁性图案 的导电图案位于层叠方向相邻的导电图案之间，并且至少一个电绝缘非磁性层仅位于层叠方向的线圈内部而不是磁性层。

公开(公告)号：US20160141089A1

公开(公告)日：2016-05-19

申请号：US14898587

申请日：2014-05-16

Applicant: FDK CORPORATION

Inventor： Kiyohisa YAMAUCHI ,  Daisuke MATSUBAYASHI ,  Juji KATO ,  Mikio KITAOKA ,  Shigenori SUZUKI

IPC: H01F27/255 ,  H01F27/245 ,  H01F27/28

CPC classification number: H01F27/255 ,  H01F17/0013 ,  H01F17/0033 ,  H01F21/00 ,  H01F27/245 ,  H01F27/2804 ,  H01F2017/0066 ,  H01F2027/2809

Abstract: A multilayer inductor providing improved DC superposition characteristics by a permanent magnet that emits a bias magnetic flux, and having a low-loss material as a magnetic body to improve converter conversion efficiency. The multilayer inductor has a plurality of laminated electrically insulating magnetic layers; and laminated conductive patterns, each of the conductive patterns being connected in sequence in the lamination direction forming a spiral coil inside the magnetic layer. An magnetized annular permanent magnet layer emits a magnetic flux whose direction is opposite that of a magnetic flux excited by the coil is between an outer peripheral edge of the inductor and an outer peripheral edge of the coil so as not to overlap an inner peripheral part of the magnet layer with the conductive patterns and so as to block a space between the conductive patterns and the magnet layer, in axial view of the coil.

Abstract translation: 一种多层电感器，其通过发出偏置磁通量的永磁体提供改进的直流叠加特性，并且具有作为磁体的低损耗材料以提高转换器转换效率。 多层电感器具有多个层叠的电绝缘磁性层; 和层叠导电图案，每个导电图案在层叠方向上依次连接，在磁性层内形成螺旋线圈。 磁化的环形永磁体层发射磁通，该磁通的方向与由线圈激励的磁通的方向相反，该磁通位于电感器的外周边缘与线圈的外周边缘之间，以便不与线圈的内周部分重叠 具有导电图案的磁体层，并且在线圈的轴向视图中阻挡导电图案和磁体层之间的空间。