-
公开(公告)号：US20190018079A1
公开(公告)日：2019-01-17
申请号：US16127295
申请日：2018-09-11
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Stephen Marshall , Aaron Cook
Abstract: Methods and apparatus for a sensor having non-ratiometric fault trip level setting. In embodiments, a sensor has a sensing element with a fixed gain. A signal processing module receives the fault trip level setting and maintains the fault trip level setting constant during changes in the supply voltage.
-
公开(公告)号：US20180340987A1
公开(公告)日：2018-11-29
申请号：US15606262
申请日：2017-05-26
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Michael C. Doogue , Jason Boudreau
IPC: G01R33/00 , G01R33/025 , H01F5/04
CPC classification number: G01R33/0094 , G01R33/0005 , G01R33/0011 , G01R33/0017 , G01R33/0029 , G01R33/025 , G01R33/032 , G01R33/1284 , H01F5/04
Abstract: An apparatus comprises one or more substrates and one or more coils. At least one of the coils is configured to produce a first magnetic field that induces eddy currents in a conductive target, which generates a reflected magnetic field. One or more magnetic field sensing elements supported by the one or more substrates detect the reflected magnetic field. A conductive support structure supports the one or more substrates. The support structure includes a gap in an area adjacent to the one or more coils so that the support structure does not generate a reflected magnetic field in response to the first magnetic field.
-
公开(公告)号：US20180275214A1
公开(公告)日：2018-09-27
申请号：US15989323
申请日：2018-05-25
Applicant: Allegro MicroSystems, LLC
Inventor： David J. Haas , Michael Gaboury , Alexander Latham
CPC classification number: G01R33/072 , G01R15/202 , G01R19/0092 , G01R33/0017 , G01R33/0035 , G01R33/07 , G01R33/075
Abstract: In one aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall-type elements in parallel and connected to the chopper stabilized amplifier. In another aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall quad elements in parallel and connected to the chopper stabilized amplifier. In a further aspect, a current sensor has a bandwidth of 1 MHz and includes a chopper stabilized amplifier and a plurality of Hall quad elements, fabricated in silicon, in parallel and connected to the chopper stabilized amplifier.
-
14.发明申请公开(公告)号：US20180149713A1
公开(公告)日：2018-05-31
申请号：US15363208
申请日：2016-11-29
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , William P. Taylor
CPC classification number: G01R33/0076 , G01R15/202 , G01R15/205 , G01R19/0092 , G01R33/0023 , G01R33/0047 , G01R33/07 , G01R33/09 , H01L27/22 , H01L43/065 , H01L43/08
Abstract: The concepts, systems, circuits and techniques described herein are directed toward sensing a voltage transient within a magnetic field sensor integrated circuit, such as a current sensor. A magnetic field sensor integrated circuit includes a substrate having a first surface and a second opposing surface, at least one magnetic field sensing element supported by a first surface of the substrate, an electromagnetic shield layer disposed on a shielded region of the first surface of the substrate adjacent to an unshielded region of the first surface of the substrate and an electrode disposed in the unshielded region of the first surface of the substrate and configured to permit detection of the voltage transient. In some embodiments, the shielded region and/or the electrode can be omitted.
-
公开(公告)号：US20180076909A1
公开(公告)日：2018-03-15
申请号：US15702940
申请日：2017-09-13
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Joseph James Judkins, III
CPC classification number: H01L25/0655 , H01L43/02 , H01L2224/48137 , H04B5/0031 , H04B5/0075 , H04B5/0093 , H04B5/02 , H04B17/17 , H04B17/18 , H04B17/29
Abstract: Methods and apparatus for a signal isolator having first and second dies separated by a voltage barrier region, wherein transmit and receive paths of the first and second dies provide bi-directional transfer of feedback and/or diagnostic signals between the first and second die. In embodiments, transmitter refresh signals and receiver refresh signals are exchanged to detect fault conditions.
-
Patent Agency Ranking
16.发明授权Method and apparatus for determining linear position using multiple magnetic field sensors 有权使用多个磁场传感器确定线性位置的方法和装置公开(公告)号：US09042716B2
公开(公告)日：2015-05-26
申请号：US13967681
申请日：2013-08-15
Applicant: Allegro Microsystems, LLC
Inventor： Bryan Cadugan , Alexander Latham
CPC classification number: G01B7/003 , G01B7/14 , G01D5/145 , G01R33/0023 , G01R33/06 , G02B7/08 , G03B13/36
Abstract: The linear position of an object is estimated using multiple magnetic field sensors and a magnet. The multiple magnetic field sensors are held in fixed relation to one another and in moving relation with respect to the magnet. Readings of the first and second magnetic field sensors and the fixed distance between the first and second magnetic field sensors may be used to estimate the linear position. In some embodiments, an estimated frequency of an approximately sinusoidal field versus position characteristic is also used as part of the estimation.
Abstract translation: 使用多个磁场传感器和磁体来估计物体的线性位置。 多个磁场传感器彼此固定并且相对于磁体移动。 可以使用第一和第二磁场传感器的读数和第一和第二磁场传感器之间的固定距离来估计线性位置。 在一些实施例中，近似正弦场对位置特性的估计频率也被用作估计的一部分。
-
17.发明申请Method And Apparatus For Determining Linear Position Using Multiple Magnetic Field Sensors 有权使用多个磁场传感器确定线性位置的方法和装置公开(公告)号：US20150050013A1
公开(公告)日：2015-02-19
申请号：US13967681
申请日：2013-08-15
Applicant: Allegro Microsystems, LLC
Inventor： Bryan Cadugan , Alexander Latham
CPC classification number: G01B7/003 , G01B7/14 , G01D5/145 , G01R33/0023 , G01R33/06 , G02B7/08 , G03B13/36
Abstract: The linear position of an object is estimated using multiple magnetic field sensors and a magnet. The multiple magnetic field sensors are held in fixed relation to one another and in moving relation with respect to the magnet. Readings of the first and second magnetic field sensors and the fixed distance between the first and second magnetic field sensors may be used to estimate the linear position. In some embodiments, an estimated frequency of an approximately sinusoidal field versus position characteristic is also used as part of the estimation.
Abstract translation: 使用多个磁场传感器和磁体来估计物体的线性位置。 多个磁场传感器彼此固定并且相对于磁体移动。 可以使用第一和第二磁场传感器的读数和第一和第二磁场传感器之间的固定距离来估计线性位置。 在一些实施例中，近似正弦场对位置特性的估计频率也被用作估计的一部分。
-
公开(公告)号：US20250147128A1
公开(公告)日：2025-05-08
申请号：US18503333
申请日：2023-11-07
Applicant: Allegro MicroSystems, LLC
Inventor： Tyler Daigle , Maxwell McNally , Steven Daubert , Alexander Latham
IPC: G01R33/09
Abstract: Methods and apparatus for a magnetic field sensor IC package having groups of arrays of TMR elements each having a pinning direction. An on-chip coil is routed under the TMR elements to conduct current for generating a magnetic field to stimulate the TMR elements. The device may be configured to sense changes in an applied magnetic field.
-
公开(公告)号：US12282075B2
公开(公告)日：2025-04-22
申请号：US17810353
申请日：2022-07-01
Applicant: Allegro MicroSystems, LLC
Inventor： Simon E. Rock , Georges El Bacha , Shaun D. Milano , Loïc André Messier , Alexander Latham , Maxwell McNally , Shixi Louis Liu
Abstract: A current sensor IC includes a lead frame having a die attach pad and elongated leads extending in a single direction with respect to the die attach pad, a semiconductor die having a first surface attached to the die attach pad and a second, opposing surface supporting magnetic field sensing elements, and a non-conductive mold material. A first portion of the mold material encloses the semiconductor die and the die attach pad, a second portion of the mold material encloses a portion of the elongated leads, and the mold material further includes a wing structure between the first portion and the second portion. In assembly, the first portion of the mold material extends into a cutout through a current conductor and the wing structure abuts a surface of the conductor. The current sensor can implement differential sensing based on signals from at least two magnetic field sensing elements.
-
公开(公告)号：US20250027760A1
公开(公告)日：2025-01-23
申请号：US18354895
申请日：2023-07-19
Applicant: Allegro MicroSystems, LLC
Inventor： Zachary Richards , Alexander Latham , Rémy Lassalle-Balier , Solène Bastien , Mathew Drouin
Abstract: A system is provided comprising: a first target including a plurality of first teeth; and a second target that is coupled to the first target via a mechanical link, the second target including a plurality of second teeth, the second target being disposed above or below the first target, the plurality of first teeth including a different number of teeth than the plurality of second teeth, wherein the first target and the second target are configured to generate respective magnetic fields in response to one or more excitation magnetic fields, the respective magnetic fields being usable to measure a twisting force that is incident on the mechanical link that couples the first target to the second target.
-
-
-
-
-
-
-
-
-
Search Results
116
records
(took 0.021 seconds)
