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公开(公告)号：US20140139213A1
公开(公告)日：2014-05-22
申请号：US13682921
申请日：2012-11-21
申请人： Bryan Cadugan , Michael C. Doogue
发明人： Bryan Cadugan , Michael C. Doogue
CPC分类号： G01R33/0023 , G01R33/07 , G01R33/09
摘要： Apparatuses for detecting the strength of magnetic fields may include a first magnetic field detection circuit that produces a first signal indicating a strength of a magnetic field, and a second magnetic field detection circuit that can be turned on and off, and produces a second signal indicating the strength of the magnetic field. A control circuit may be configured to determine whether the first signal indicates a change greater than a predetermined amount in the strength of the magnetic field. If the change is greater than the predetermined amount, the control circuit may turn on the second magnetic field detection circuit. The control circuit may turn off the second magnetic field detection circuit to conserve power if the strength of the magnetic field is relatively stable. Methods for detecting the strength of the magnetic field are also disclosed.
摘要翻译： 用于检测磁场强度的装置可以包括产生指示磁场强度的第一信号的第一磁场检测电路和可以被导通和关断的第二磁场检测电路，并产生指示 磁场的强度。 控制电路可以被配置为确定第一信号是否指示大于磁场强度的预定量的变化。 如果变化大于预定量，则控制电路可以接通第二磁场检测电路。 如果磁场的强度相对稳定，则控制电路可以关闭第二磁场检测电路以节省功率。 还公开了用于检测磁场强度的方法。
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公开(公告)号：US20130265037A1
公开(公告)日：2013-10-10
申请号：US13439082
申请日：2012-04-04
申请人： Andreas P. Friedrich , Andrea Foletto , P. Karl Scheller , William P. Taylor , Michael C. Doogue
发明人： Andreas P. Friedrich , Andrea Foletto , P. Karl Scheller , William P. Taylor , Michael C. Doogue
CPC分类号： G01R33/0094 , G01D3/028 , G01R33/07 , G01R33/09
摘要： An angle sensor to provide sensor-to-magnet misalignment detection and correction capability in rotation angle measurement applications is presented. The angle sensor has magnetic field sensing elements to sense magnetic field associated with a rotating magnet. The angle sensor includes circuitry to generate signals based on the sensing by the sensing elements. The signals provide information that can be combined according to an error function to provide misalignment detection. The angle sensor can be used with or can be incorporated in an angle measurement device that employs a processing unit to produce a rotation angle value. In one embodiment, the processing unit is configured to implement the error function and correct the angle value for detected misalignment. In another embodiment, the error function is performed by a programming device and detected misalignment is corrected through mechanical adjustment of sensor-to-magnet position.
摘要翻译： 提出了一种角度传感器，用于在旋转角度测量应用中提供传感器到磁体的未对准检测和校正能力。 角度传感器具有用于感测与旋转磁体相关联的磁场的磁场感测元件。 角度传感器包括基于感测元件的感测产生信号的电路。 信号提供可以根据误差函数组合以提供不对准检测的信息。 该角度传感器可以与采用加工单元产生旋转角度值的角度测量装置结合使用或者可以并入其中。 在一个实施例中，处理单元被配置为实现误差函数并校正检测到的未对准的角度值。 在另一个实施例中，误差函数由编程装置执行，并且通过传感器到磁体位置的机械调节来校正检测到的未对准。
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53.发明申请MAGNETIC FIELD SENSOR HAVING MULTIPLE SENSING ELEMENTS FOR MISALIGNMENT DETECTION AND CORRECTION IN CURRENT SENSING AND OTHER APPLICATIONS 有权具有多种传感元件的磁场传感器用于电流传感和其他应用中的误差检测和校正公开(公告)号：US20130265036A1
公开(公告)日：2013-10-10
申请号：US13439074
申请日：2012-04-04
申请人： Andreas P. Friedrich , Andrea Foletto , P. Karl Scheller , William P. Taylor , Michael C. Doogue
发明人： Andreas P. Friedrich , Andrea Foletto , P. Karl Scheller , William P. Taylor , Michael C. Doogue
CPC分类号： G01R33/0094 , G01R15/207 , H01L43/06 , H01L43/065 , H01L43/08
摘要： A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. The sensor includes an arrangement of two or more magnetic field sensing elements to sense magnetic field associated with a target. The sensor further includes circuitry to generate a sensor output signal based on sensing of at least one of the magnetic field sensing elements of the arrangement. Also included is a programmable misalignment adjustment block to control the circuitry to generate the output signal with compensation for misalignment between the sensor and the target. The programmable misalignment adjustment block can be programmed to select measurement of one of the two or more magnetic field sensing elements, or alternatively, a mathematical combination of measurements of the two or more magnetic field sensing elements, for generating the sensor output signal when a test of the sensor indicates a misalignment.
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。 传感器包括两个或更多个磁场感测元件的布置，用于感测与目标相关联的磁场。 该传感器还包括基于感测该装置的磁场感测元件中的至少一个来产生传感器输出信号的电路。 还包括可编程的未对准调整块，以控制电路以产生输出信号，并补偿传感器和目标之间的未对准。 可编程的未对准调整块可以被编程以选择两个或更多个磁场感测元件中的一个的测量，或者替代地，两个或更多个磁场感测元件的测量的数学组合，用于当测试时产生传感器输出信号 的传感器表示未对准。
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54.发明申请Magnetic Field Sensor Integrated Circuit with Integral Ferromagnetic Material 审中-公开具有积分铁磁材料的磁场传感器集成电路公开(公告)号：US20130249544A1
公开(公告)日：2013-09-26
申请号：US13424618
申请日：2012-03-20
申请人： Ravi Vig , William P. Taylor , Andreas P. Friedrich , Paul David , Marie-Adelaide Lo , Eric Burdette , Eric Shoemaker , Michael C. Doogue
发明人： Ravi Vig , William P. Taylor , Andreas P. Friedrich , Paul David , Marie-Adelaide Lo , Eric Burdette , Eric Shoemaker , Michael C. Doogue
IPC分类号： G01R33/02
CPC分类号： G01R33/0047 , G01B7/30 , G01R33/0011
摘要： A magnetic field sensor includes a lead frame, a semiconductor die supporting a magnetic field sensing element, a non-conductive mold material enclosing the die and a portion of the lead frame, a ferromagnetic mold material secured to the non-conductive mold material and a securing mechanism to securely engage the mold materials. The ferromagnetic mold material may comprise a soft ferromagnetic material to form a concentrator or a hard ferromagnetic material to form a bias magnet. The ferromagnetic mold material may be tapered and includes a non-contiguous central region, as may be an aperture or may contain the non-conductive mold material or an overmold material. Further embodiments include die up, lead on chip, and flip-chip arrangements, wafer level techniques to form the concentrator or bias magnet, integrated components, such as capacitors, on the lead frame, and a bias magnet with one or more channels to facilitate overmolding.
摘要翻译： 磁场传感器包括引线框架，支撑磁场感测元件的半导体管芯，封装模具的非导电模具材料和引线框架的一部分，固定到非导电模具材料的铁磁模具材料和 固定机构可牢固地接合模具材料。 铁磁模具材料可以包括软铁磁材料以形成集中器或硬铁磁材料以形成偏置磁体。 铁磁模具材料可以是锥形的并且包括不连续的中心区域，可以是孔或可以包含非导电模具材料或包覆模制材料。 另外的实施例包括裸片，片上芯片和倒装芯片布置，用于形成集中器或偏置磁体的晶片级技术，引线框架上的诸如电容器之类的集成部件，以及具有一个或多个通道的偏置磁体，以便于 包覆成型
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公开(公告)号：US20120013327A1
公开(公告)日：2012-01-19
申请号：US13239587
申请日：2011-09-22
CPC分类号： G01R33/07 , G01D5/145 , G01R33/0023 , G01R33/0035 , G01R33/09
摘要： A magnetic field sensor includes a linear magnetic field sensor to produce a voltage proportional to a sensed magnetic field and an interface having only two terminals for external connections. The two terminals of the interface include a power supply terminal and a ground terminal. The interface includes a voltage-controlled current generating device that is connected between the two terminals and is controlled by the voltage to provide a current signal that is proportional to the sensed magnetic field.
摘要翻译： 磁场传感器包括线性磁场传感器以产生与检测到的磁场成比例的电压和仅具有用于外部连接的两个端子的接口。 接口的两个端子包括电源端子和接地端子。 该接口包括电压控制的电流产生装置，其连接在两个端子之间并由电压控制以提供与所感测的磁场成比例的电流信号。
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公开(公告)号：US07936164B2
公开(公告)日：2011-05-03
申请号：US12167681
申请日：2008-07-03
CPC分类号： G01R15/207
摘要： The invention provides a current sensor that may be folded over a conductor without the need to sever the conductor or thread the conductor through the current sensor. In one embodiment, the current sensor includes an outer body having a first folding portion and a second folding portion coupled to the first folding portion. The current sensor also includes a soft ferromagnetic body disposed within the outer body comprising a first core element and a second core element. The first and second core elements form a lumen when the first and second folding portions are folded. The lumen is configured to receive a conductor. The current sensor also includes a magnetic field detector to sense a current in the conductor. The magnetic field detector is disposed at least partially between the first and second core elements when the first and second folding portions are folded.
摘要翻译： 本发明提供一种可以在导体上折叠的电流传感器，而不需要切断导体或将导体穿过电流传感器。 在一个实施例中，电流传感器包括具有第一折叠部分和耦合到第一折叠部分的第二折叠部分的外部主体。 电流传感器还包括设置在外体内的软铁磁体，其包括第一芯元件和第二芯元件。 当折叠第一和第二折叠部分时，第一和第二芯元件形成内腔。 管腔被配置为接收导体。 电流传感器还包括用于感测导体中的电流的磁场检测器。 当第一和第二折叠部分被折叠时，磁场检测器至少部分地设置在第一和第二芯元件之间。
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公开(公告)号：US07859255B2
公开(公告)日：2010-12-28
申请号：US12840717
申请日：2010-07-21
CPC分类号： G01R33/093 , B82Y25/00 , G01R15/205
摘要： A magnetoresistive (MR) sensing device includes MR elements electrically connected to form a bridge circuit and one or more non-functional (or “dummy”) MR elements for improved matching of the bridge circuit MR elements.
摘要翻译： 磁阻（MR）感测装置包括电连接以形成桥接电路和一个或多个非功能（或“虚拟”）MR元件的MR元件，用于改善桥接电路MR元件的匹配。
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公开(公告)号：US07795862B2
公开(公告)日：2010-09-14
申请号：US11876048
申请日：2007-10-22
CPC分类号： G01R33/093 , B82Y25/00 , G01R15/205
摘要： A magnetoresistive (MR) sensing device includes MR elements electrically connected to form a bridge circuit and one or more non-functional (or “dummy”) MR elements for improved matching of the bridge circuit MR elements.
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公开(公告)号：US07768083B2
公开(公告)日：2010-08-03
申请号：US11335944
申请日：2006-01-20
IPC分类号： H01L29/82
CPC分类号： H01L43/02 , B82Y25/00 , G01R15/08 , G01R15/207 , G01R33/02 , G01R33/06 , G01R33/07 , G01R33/09 , G01R33/093 , H01L23/49541 , H01L25/162 , H01L43/04 , H01L43/065 , H01L43/08 , H01L2224/48091 , H01L2224/48137 , H01L2224/48247 , H01L2924/3025 , H01L2924/00014 , H01L2924/00
摘要： An integrated circuit can have a first substrate supporting a magnetic field sensing element and a second substrate supporting another magnetic field sensing element. The first and second substrates can be arranged in a variety of configurations. Another integrated circuit can have a first magnetic field sensing element and second different magnetic field sensing element disposed on surfaces thereof.
摘要翻译： 集成电路可以具有支撑磁场感测元件的第一基板和支撑另一磁场感测元件的第二基板。 第一和第二基板可以以各种配置布置。 另一个集成电路可以具有设置在其表面上的第一磁场感测元件和第二不同的磁场感测元件。
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60.发明申请METHODS AND APPARATUS FOR AN ANALOG ROTATIONAL SENSOR HAVING MAGNETIC SENSOR ELEMENTS 有权具有磁性传感器元件的模拟旋转传感器的方法和装置公开(公告)号：US20100181997A1
公开(公告)日：2010-07-22
申请号：US12748496
申请日：2010-03-29
IPC分类号： G01B7/30
摘要： A sensor includes a signal generation module including a magnetic sensor to provide position information for generating first and second waveforms corresponding to the position information. An analog signal processing module provides an algebraic manipulation of a subset of the first waveform, the second waveform, a first inverted waveform, and a second inverted waveform, to generate a linear output signal.
摘要翻译： 传感器包括信号产生模块，其包括磁传感器，以提供用于产生与位置信息对应的第一和第二波形的位置信息。 模拟信号处理模块提供对第一波形，第二波形，第一反相波形和第二反相波形的子集的代数操作，以产生线性输出信号。
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