公开(公告)号：US20130249531A1

公开(公告)日：2013-09-26

申请号：US13905049

申请日：2013-05-29

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Mitsuo ARATONO ,  Masahiro IIZUKA ,  Masamichi SAITO ,  Akira TAKAHASHI ,  Shigenobu MIYAJIMA ,  Kenji ICHINOHE ,  Yoshihiro NISHIYAMA ,  Yosuke IDE ,  Shinji MITSUYA

IPC: G01R19/00

CPC classification number: G01R19/0092 ,  B82Y25/00 ,  G01R15/205 ,  G01R15/207

Abstract: A current sensor includes a magnetic sensor module including a plurality of magnetic sensor units connected in series. The magnetic sensor units each include a first magnetic sensor element and a second magnetic sensor element which have sensitivity axes oriented in opposite directions. A first terminal of the first magnetic sensor unit is connected to a first potential source. A third terminal of the first magnetic sensor unit is connected to a second potential source. A second terminal and a fourth terminal of the last magnetic sensor unit are connected to constitute a sensor output terminal. The first terminal of each of the magnetic sensor units excluding the first magnetic sensor unit is connected to the second terminal of the next magnetic sensor unit and the third terminal thereof is connected to the fourth terminal of the next magnetic sensor unit.

Abstract translation: 电流传感器包括具有串联连接的多个磁传感器单元的磁传感器模块。 磁传感器单元各自包括具有以相反方向定向的灵敏度轴的第一磁传感器元件和第二磁传感器元件。 第一磁传感器单元的第一端子连接到第一电位源。 第一磁传感器单元的第三端子连接到第二电位源。 连接最后一个磁传感器单元的第二端子和第四端子以构成传感器输出端子。 除了第一磁传感器单元之外的每个磁传感器单元的第一端子连接到下一个磁传感器单元的第二端子，并且其第三端子连接到下一个磁传感器单元的第四端子。

公开(公告)号：US20130307534A1

公开(公告)日：2013-11-21

申请号：US13951278

申请日：2013-07-25

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Hiroyuki HEBIGUCHI ,  Isao SATO ,  Takashi FUJISAKI ,  Mitsuo ARATONO ,  Akira TAKAHASHI ,  Masato NAKAMURA

IPC: G01R33/00

CPC classification number: G01R33/0005 ,  G01R15/205 ,  G01R33/06 ,  H01L43/08 ,  H01L2924/30107

Abstract: A current sensor includes first and second magnetic sensors that are placed around a current line through which a current flows so that the current line is positioned therebetween, and that detect an induction field generated by the current. Each of the first and second magnetic sensors has a main sensitivity axis and a sub-sensitivity axis. The direction of the main sensitivity axis of each of the first and second magnetic sensors is oriented in a direction that is not orthogonal to the direction of the induction field. The directions of the main sensitivity axes of the first and second magnetic sensors are oriented in the same direction and the directions of the sub-sensitivity axes are oriented in the same direction, or the directions of the main sensitivity axes are oriented in opposite directions and the directions of the sub-sensitivity axes are oriented in opposite directions.

Abstract translation: 电流传感器包括第一和第二磁传感器，其围绕电流流过的电流线放置，使得电流线位于其间，并且检测由电流产生的感应场。 第一和第二磁传感器中的每一个具有主灵敏度轴和副敏感度轴。 第一和第二磁传感器中的每一个的主灵敏度轴的方向定向在与感应场方向不正交的方向上。 第一和第二磁性传感器的主要灵敏度轴的方向定向在相同的方向上，并且副敏感性轴的方向被定向在相同的方向上，或者主要灵敏度轴的方向指向相反的方向，并且 副敏感轴的方向取向相反。

公开(公告)号：US20130265040A1

公开(公告)日：2013-10-10

申请号：US13910009

申请日：2013-06-04

Applicant: Alps Green Devices Co., Ltd.

Inventor： Yosuke IDE ,  Masamichi SAITO ,  Akira TAKAHASHI ,  Masahiro IIZUKA ,  Kenji ICHINOHE ,  Yoshihiro NISHIYAMA ,  Mitsuo ARATONO

IPC: G01R15/20

CPC classification number: G01R15/205 ,  B82Y25/00 ,  G01R33/09 ,  G01R33/093 ,  H01F10/3272 ,  H01L27/22 ,  H01L43/08

Abstract: A current sensor includes a substrate, a conductive body being provided above the substrate and extending in one direction, and magnetoresistance effect elements being provided between the substrate and the conductive body and outputting output signals owing to an induction magnetic field from a current to be measured being conducted through the conductive body, wherein each of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic film and the second ferromagnetic film are approximately equal, and a difference between the magnetization amounts thereof is substantially zero.

Abstract translation: 电流传感器包括衬底，导电体设置在衬底上并在一个方向上延伸，并且磁阻效应元件设置在衬底和导电体之间，并且由于来自待测电流的感应磁场而输出输出信号 通过导电体导电，其中每个磁阻效应元件具有包括其磁化方向固定的铁磁固定层，非磁性中间层和磁化方向相对于外部的磁化方向波动的自由磁性层的层压结构 铁磁固定层是通过反平行耦合膜反铁磁耦合第一铁磁膜和第二铁磁膜而形成的自固定型，第一铁磁膜和第二铁磁性膜的居里温度近似相等， t之间的区别 其磁化量基本为零。