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1. 发明申请

WO2017058586A1 MAGNETIC FIELD SENSORS AND METHODS USING MIXING IN A MAGNETORESISTANCE ELEMENT 审中-公开
标题翻译：磁场传感器和使用磁阻元件中的混合的方法
公开(公告)号：WO2017058586A1
公开(公告)日：2017-04-06
申请号：PCT/US2016/052745
申请日：2016-09-21
申请人： ALLEGRO MICROSYSTEMS, LLC , COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
发明人： MONREAL, Gerardo, A. , FRIEDRICH, Andreas, P. , FERMON, Claude , PANNETIER-LECOEUR, Myriam
IPC分类号： G01R33/06 , G01R33/09
CPC分类号： G01R33/0023 , G01R33/09 , G01R33/093
摘要： A magnetic field sensor and an associated method use one or more magnetoresistance elements ( 1302, 1304, 1306, 1308) driven with an AC mixing current (1312, 1316) and experiencing an AC mixing magnetic field which have AC components of the same frequency (fmod), such as to generate a DC voltage signal (1334a, 1334b) or a DC voltage signal component related to a slope of a transfer curve of the one or more magnetoresistance elements, wherein the mixing takes place in the magnetoresistance element(s) and results in changes of the value of the DC component in response to changes of the sensed external magnetic field.
摘要翻译：磁场传感器和相关联的方法使用由AC混合电流（1312,1316）驱动并经历具有相同频率的AC分量的AC混合磁场的一个或多个磁阻元件（1302,1304,1306,1308） fmod），以产生与一个或多个磁阻元件的传输曲线的斜率相关的DC电压信号（1334a，1334b）或DC电压信号分量，其中混合发生在磁阻元件中，并且响应于所感测的外部磁场的变化而导致DC分量的值的变化。

2. 发明申请

WO2017160496A1 ASSEMBLY USING A MAGNETIC FIELD SENSOR FOR DETECTING A ROTATION AND A LINEAR MOVEMENT OF AN OBJECT 审中-公开
标题翻译：装配用磁场传感器检测物体的旋转和线性运动
公开(公告)号：WO2017160496A1
公开(公告)日：2017-09-21
申请号：PCT/US2017/020067
申请日：2017-03-01
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： KRANZ, Stefan , SCHURT, Stephan , FRIEDRICH, Andreas, P. , VUILLERMET, Yannick
IPC分类号： G01D5/14 , G01B7/02 , G01D21/02
摘要： An assembly has a base structure, a rotatable structure, a first magnet coupled to the base structure, a second magnet coupled to the rotatable structure, and a magnetic field sensor. The magnetic field sensor can identify at least one condition (i.e., position) of the assembly.
摘要翻译：组件具有基部结构，可旋转结构，耦合到基部结构的第一磁体，耦合到可旋转结构的第二磁体以及磁场传感器。磁场传感器可以识别组件的至少一个状态（即位置）。

3. 发明申请

WO2016195956A1 MAGNETIC FIELD SENSOR FOR ORIENTATION INDEPENDENT SPEED AND DIRECTION MEASUREMENT 审中-公开
标题翻译：用于定向的磁场传感器独立速度和方向测量
公开(公告)号：WO2016195956A1
公开(公告)日：2016-12-08
申请号：PCT/US2016/032021
申请日：2016-05-12
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： FOLETTO, Andrea , FRIEDRICH, Andreas, P.
IPC分类号： G01D5/14 , G01R33/07
CPC分类号： G01D5/142 , G01D5/145 , G01D5/16 , G01R33/072 , G01R33/091
摘要： A magnetic field sensor that provides target speed and direction detection that is independent of sensor-to-target orientation includes at least three differential channels, each responsive to a pair of magnetic field sensing elements to generate a respective magnetic field channel signal. A combining element is configured to generate a combined signal based on the first, second, and third magnetic field channel signals and control circuitry responsive to the combined signal and to at least one of the first, second, and third magnetic field channel signals generates a sensor output signal that indicative of target speed and direction.
摘要翻译：提供独立于传感器到目标取向的目标速度和方向检测的磁场传感器包括至少三个差分通道，每个差分通道响应一对磁场感测元件以产生相应的磁场通道信号。组合元件被配置为基于第一，第二和第三磁场通道信号和控制电路产生响应于组合信号的组合信号，并且第一，第二和第三磁场通道信号中的至少一个产生一个传感器输出信号，表示目标速度和方向。

4. 发明申请

WO2014204919A1 SYSTEM AND METHOD FOR PROVIDING SIGNAL ENCODING REPRESENTATIVE OF A SIGNATURE REGION IN A TARGET AND OF A DIRECTION OF ROTATION 审中-公开
标题翻译：在目标和旋转方向上提供签名地区的信号编码代码的系统和方法
公开(公告)号：WO2014204919A1
公开(公告)日：2014-12-24
申请号：PCT/US2014/042669
申请日：2014-06-17
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： FRIEDRICH, Andreas, P. , FOLETTO, Andrea , TOWNE, Jay, M. , MORRIS, Michael , SHOEMAKER, Eric
IPC分类号： G01D5/245 , G01D5/244 , G01P3/48 , G01P3/487 , G01P3/488 , G01P13/04
CPC分类号： G01R33/02 , G01D5/24461 , G01D5/2457 , G01P3/4802 , G01P3/487 , G01P3/488 , G01P3/489 , G01P13/045 , G01R33/07 , G01R33/09
摘要： A magnetic field sensor and associated method provide an output signal with an identifiable encoding to indicate when a signature region in a moving target proximate to the magnetic field sensor passes by the magnetic field sensor. An output protocol processor, coupled to at least two detector circuits, generates a magnetic field sensor output signal, wherein the magnetic field sensor output signal has a plurality of pulses with respective pulse widths, wherein first pulses with first pulse widths with a first time duration are indicative of the target moving in a first direction, wherein second pulses with second pulse widths with a second different time duration are indicative of the target moving in a second different direction, and wherein third pulses with identifiable encoding are indicative of the signature region passing by the magnetic field sensor.
摘要翻译：磁场传感器和相关联的方法提供具有可识别编码的输出信号，以指示接近磁场传感器的移动目标中的签名区域何时通过磁场传感器。耦合到至少两个检测器电路的输出协议处理器产生磁场传感器输出信号，其中所述磁场传感器输出信号具有多个具有相应脉冲宽度的脉冲，其中具有第一持续时间的第一脉冲宽度的第一脉冲指示目标沿第一方向移动，其中具有第二不同持续时间的具有第二脉冲宽度的第二脉冲指示目标在第二不同方向上移动，并且其中具有可识别编码的第三脉冲指示签名区域通过由磁场传感器。

5. 发明申请

WO2013180852A1 GEAR TOOTH SENSOR WITH PEAK AND THRESHOLD DETECTORS 审中-公开
标题翻译：齿轮传感器与峰值和阈值检测器
公开(公告)号：WO2013180852A1
公开(公告)日：2013-12-05
申请号：PCT/US2013/037887
申请日：2013-04-24
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： FOLETTO, Andrea , MORRIS, Michael , DROUIN, Mathew , FERNANDEZ, Devon , FRIEDRICH, Andreas, P. , SCHELLER, P., Karl
IPC分类号： G01D5/14 , G01D5/244
CPC分类号： G01D5/2448 , G01D5/145
摘要： Presented herein is a magnetic field sensor architecture that uses outputs of a peak detector and threshold detector operating in parallel to detect magnetic anomalies that may be associated with the target being sensed, e.g., a rotational ferromagnetic object such as a toothed gear, and use such detection to prevent sensor malfunction. The sensor includes an edge detection circuit and an error detection circuit. In one embodiment, the edge detection circuit includes circuits to detect edges (or transitions) of the threshold and peak detector output signals and the error detection circuit includes circuits, responsive to the edge detection circuit, to indicate an error when a "missed transition" occurs or a peak-to-peak value of an input signal as detected by the peak detector for a current cycle differs from an expected peak-to-peak value by a predetermined amount.
摘要翻译：这里呈现的是一种磁场传感器架构，其使用平行操作的峰值检测器和阈值检测器的输出来检测可能与感测到的目标相关的磁异常，例如旋转铁磁物体，例如齿轮，并使用检测以防止传感器故障。传感器包括边缘检测电路和错误检测电路。在一个实施例中，边缘检测电路包括用于检测阈值和峰值检测器输出信号的边缘（或转换）的电路，并且误差检测电路包括响应于边缘检测电路的指示当“错过转换” 或由峰值检测器为当前周期检测的输入信号的峰 - 峰值与期望的峰 - 峰值不同预定量。

6. 发明申请

WO2015100046A1 MAGNETIC FIELD SENSOR AND METHOD FOR SENSING RELATIVE LOCATION OF THE MAGNETIC FIELD SENSOR AND A TARGET OBJECT ALONG A MOVEMENT LINE 审中-公开
标题翻译：用于感测磁场传感器的相对位置的磁场传感器和方法以及运动线上的目标对象
公开(公告)号：WO2015100046A1
公开(公告)日：2015-07-02
申请号：PCT/US2014/070339
申请日：2014-12-15
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： KERDRAON, Thomas , FRIEDRICH, Andreas, P. , VUILLERMET, Yannick
IPC分类号： G01R33/00 , G01D5/14 , G01R33/07
CPC分类号： G01B7/14 , G01D5/145 , G01R33/0005 , G01R33/06 , G01R33/072
摘要： A magnetic field sensor with a magnet is disposed proximate to a ferromagnetic target object having at least one ferromagnetic surface. The magnetic field sensor is operable to sense a relative location between the magnetic field sensor and the ferromagnetic target object along a movement line. In some embodiments, the target object is also spinning about a rotation axis parallel to the movement line. A corresponding method is described.
摘要翻译：具有磁体的磁场传感器设置在具有至少一个铁磁表面的铁磁目标物体附近。磁场传感器可操作以沿着移动线感测磁场传感器和铁磁目标物体之间的相对位置。在一些实施例中，目标物体也围绕平行于移动线的旋转轴旋转。描述相应的方法。

7. 发明申请

WO2014175994A1 INTEGRATED CIRCUIT PACKAGE HAVING A SPLIT LEAD FRAME AND A MAGNET 审中-公开
标题翻译：具有分离引线框架和磁铁的集成电路封装
公开(公告)号：WO2014175994A1
公开(公告)日：2014-10-30
申请号：PCT/US2014/032125
申请日：2014-03-28
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： DAVID, Paul , VIG, Ravi , TAYLOR, William, P. , FRIEDRICH, Andreas, P.
IPC分类号： G01R33/00
CPC分类号： G01R33/093 , G01R33/0047 , H01L2224/32245 , H01L2224/48247 , H01L2224/73265 , H01L2924/181 , H01L2924/00 , H01L2924/00012
摘要： A magnetic field sensor includes a lead frame having a plurality of leads, at least two of which have a connection portion and a die attach portion. A semiconductor die is attached to the die attach portion of the at least two leads and a separately formed ferromagnetic element, such as a magnet, is disposed adjacent to the lead frame.
摘要翻译：磁场传感器包括具有多个引线的引线框架，其中至少两个引线框具有连接部分和管芯附接部分。半导体管芯附接到至少两个引线的管芯附接部分，并且分开形成的铁磁元件（例如磁体）被布置成与引线框架相邻。

8. 发明申请

WO2014099280A2 CIRCUITS AND METHODS FOR PROCESSING SIGNALS GENERATED BY A CIRCULAR VERTICAL HALL (CVH) SENSING ELEMENT IN THE PRESENCE OF A MULTI-POLE MAGNET 审中-公开
标题翻译：通过多通道磁铁存在的圆形垂直孔（CVH）感应元件生成信号的电路和方法
公开(公告)号：WO2014099280A2
公开(公告)日：2014-06-26
申请号：PCT/US2013/071619
申请日：2013-11-25
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： FRIEDRICH, Andreas, P. , FOLETTO, Andrea
IPC分类号： G01R33/07
CPC分类号： G01D5/145 , G01B7/30 , G01D5/2451 , G01R33/0023 , G01R33/007 , G01R33/072 , G01R33/077
摘要： A magnetic field sensor has a circular vertical Hall (CVH) sensing element with a plurality of vertical Hall elements disposed over a common implant region in a substrate. The plurality of vertical Hall elements is disposed in an x-y plane. The magnetic field sensor is responsive to a magnetic field generated by a multi-pole magnet having a plurality of north poles and also a plurality of south poles arranged in a plane parallel to the x-y plane, and, in some embodiments, arranged in the x-y plane. A corresponding method is also described.
摘要翻译：磁场传感器具有圆形的垂直霍尔（CVH）感测元件，多个垂直霍尔元件设置在衬底中的公共注入区域上。多个垂直霍尔元件设置在x-y平面中。磁场传感器响应于由具有多个北极的多极磁体产生的磁场以及平行于xy平面的平面中布置的多个南极，并且在一些实施例中，被布置在xy 平面。还描述了相应的方法。

9. 发明申请

WO2013151792A1 HIGH ACCURACY DIFFERENTIAL CURRENT SENSOR FOR APPLICATIONS LIKE GROUND FAULT INTERRUPTERS 审中-公开
标题翻译：高精度差分电流传感器应用类似接地故障中断
公开(公告)号：WO2013151792A1
公开(公告)日：2013-10-10
申请号：PCT/US2013/033248
申请日：2013-03-21
申请人： ALLEGRO MICROSYSTEMS, LLC , FRIEDRICH, Andreas, P. , FOLETTO, Andrea , SCHELLER, P., Karl , TAYLOR, William, P. , DOOGUE, Michael, C.
发明人： FRIEDRICH, Andreas, P. , FOLETTO, Andrea , SCHELLER, P., Karl , TAYLOR, William, P. , DOOGUE, Michael, C.
IPC分类号： G01R15/20 , H02H3/00
CPC分类号： G01R15/207 , G01R19/10 , H01H83/02
摘要： A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. In one configuration, the sensor obtains differential and absolute current measurements of current in current-carrying conductors. When employed in a ground fault interrupter application, a first magnetic field sensing element is used to measure the absolute current flowing in the phase conductor (phase current), a second magnetic field sensing element is used to measure the absolute current flowing in the neutral conductor (neutral current) and a difference between the phase and neutral currents is measured by a third magnetic field sensing element or determined from measurements of the first and second magnetic field sensing elements. In another configuration, a measure of the difference between currents and/or the sum of currents in current-carrying conductors can be obtained. An arrangement of multiple sensing elements may be used for misalignment detection/correction.
摘要翻译：提出了一种用于电流检测和其他应用的具有多个磁场感测元件的传感器。在一种配置中，传感器获得载流导体中电流的差分和绝对电流测量。当用于接地故障断续器应用时，使用第一磁场感测元件来测量在相导体（相电流）中流动的绝对电流，第二磁场感测元件用于测量在中性导体中流动的绝对电流（中性电流），并且相位和中性电流之间的差异由第三磁场感测元件测量或者由第一和第二磁场感测元件的测量确定。在另一种配置中，可以获得电流差和/或载流导体中的电流之和的量度。可以使用多个感测元件的布置用于未对准检测/校正。

10. 发明申请

WO2017160496A8 ASSEMBLY USING A MAGNETIC FIELD SENSOR FOR DETECTING A ROTATION AND A LINEAR MOVEMENT OF AN OBJECT 审中-公开
公开(公告)号：WO2017160496A8
公开(公告)日：2017-09-21
申请号：PCT/US2017/020067
申请日：2017-03-01
申请人： ALLEGRO MICROSYSTEMS, LLC
发明人： KRANZ, Stefan , SCHURT, Stephan , FRIEDRICH, Andreas, P. , VUILLERMET, Yannick
IPC分类号： G01D5/14 , G01B7/02 , G01D21/02
摘要： An assembly has a base structure, a rotatable structure, a first magnet coupled to the base structure, a second magnet coupled to the rotatable structure, and a magnetic field sensor. The magnetic field sensor can identify at least one condition (i.e., position) of the assembly.

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