公开(公告)号：US07834603B2

公开(公告)日：2010-11-16

申请号：US12124752

申请日：2008-05-21

申请人： Vijay Mangtani ,  Weiyun Chen ,  Ravi Vig

发明人： Vijay Mangtani ,  Weiyun Chen ,  Ravi Vig

IPC分类号： G05F1/10 ,  G05F1/656 ,  G05F1/652

CPC分类号： G05F1/565 ,  H02M1/32 ,  H02M3/158

摘要： An electronic circuit combines a synchronous switching regulator circuit with an overvoltage detection circuit. The overvoltage detection circuit is configured to generate an overvoltage signal capable of an overvoltage state indicative of a power supply voltage being above a predetermined threshold voltage. The switching regulator circuit is coupled to receive the overvoltage signal. The switching regulator is also configured, in response to the overvoltage signal being in the overvoltage state, to generate a first control signal resulting in at least one of two series coupled transistors being in an off condition.

摘要翻译： 电子电路将同步开关调节器电路与过电压检测电路相结合。 过电压检测电路被配置为产生能够表示电源电压高于预定阈值电压的过电压状态的过电压信号。 开关稳压器电路被耦合以接收过电压信号。 开关调节器还被配置为响应于过电压信号处于过电压状态，以产生第一控制信号，导致两个串联耦合晶体管中的至少一个处于关断状态。

公开(公告)号：US07619406B2

公开(公告)日：2009-11-17

申请号：US12041055

申请日：2008-03-03

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01B7/30 ,  G01R33/00

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

公开(公告)号：US07552016B2

公开(公告)日：2009-06-23

申请号：US11755295

申请日：2007-05-30

申请人： Ravi Vig ,  John Cummings ,  Jonathan Lamarre ,  David J. Haas

发明人： Ravi Vig ,  John Cummings ,  Jonathan Lamarre ,  David J. Haas

IPC分类号： G01R31/00 ,  G01R31/04

CPC分类号： G01R31/2829 ,  G01R31/2884

摘要： An integrated circuit includes a monitor node adapted to receive a monitored signal. The integrated circuit also includes a multi-purpose node. The integrated circuit is adapted to receive and store a threshold presented at the multi-purpose node during a first time period. The integrated circuit is also adapted to output a fault signal from the multi-purpose node at a time after the predetermined time period. The fault signal is indicative of a relationship between the monitored signal and the threshold. With this arrangement, the multi-purpose node achieves at least two functions.

摘要翻译： 集成电路包括适于接收监视信号的监视器节点。 集成电路还包括多用途节点。 集成电路适于在第一时间段期间接收和存储呈现在多用途节点处的阈值。 集成电路还适于在预定时间段之后的时间从多用途节点输出故障信号。 故障信号表示监测信号与阈值之间的关系。 通过这种布置，多功能节点实现了至少两个功能。

公开(公告)号：US20090128130A1

公开(公告)日：2009-05-21

申请号：US12357421

申请日：2009-01-22

申请人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

发明人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

IPC分类号： G01R15/20

CPC分类号： G01R15/205 ,  G01R15/207 ,  G01R33/09 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/4903 ,  H01L2924/00014

摘要： An electronic circuit includes a substrate having a surface and a device supported by the surface of the substrate. The electronic circuit also includes a magnetic field transducer disposed over the surface of the substrate and an insulating layer disposed between the substrate and the magnetic field transducer. The electronic circuit also includes a conductor disposed over the magnetic field transducer. The conductor is configured to carry an electrical current to generate a first magnetic field. The electronic circuit is responsive to the first magnetic field.

摘要翻译： 电子电路包括具有表面的衬底和由衬底的表面支撑的器件。 电子电路还包括设置在基板的表面上的磁场换能器和设置在基板和磁场换能器之间的绝缘层。 电子电路还包括布置在磁场传感器上的导体。 导体被配置为承载电流以产生第一磁场。 电子电路响应于第一磁场。

公开(公告)号：US20080297242A1

公开(公告)日：2008-12-04

申请号：US11755295

申请日：2007-05-30

申请人： Ravi Vig ,  John Cummings ,  Jonathan Lamarre ,  David J. Haas

发明人： Ravi Vig ,  John Cummings ,  Jonathan Lamarre ,  David J. Haas

IPC分类号： H03K5/153

CPC分类号： G01R31/2829 ,  G01R31/2884

摘要： An integrated circuit includes a monitor node adapted to receive a monitored signal. The integrated circuit also includes a multi-purpose node. The integrated circuit is adapted to receive and store a threshold presented at the multi-purpose node during a first time period. The integrated circuit is also adapted to output a fault signal from the multi-purpose node at a time after the predetermined time period. The fault signal is indicative of a relationship between the monitored signal and the threshold. With this arrangement, the multi-purpose node achieves at least two functions.

摘要翻译： 集成电路包括适于接收监视信号的监视器节点。 集成电路还包括多用途节点。 集成电路适于在第一时间段期间接收和存储呈现在多用途节点处的阈值。 集成电路还适于在预定时间段之后的时间从多用途节点输出故障信号。 故障信号表示监测信号与阈值之间的关系。 通过这种布置，多功能节点实现了至少两个功能。

公开(公告)号：US07362094B2

公开(公告)日：2008-04-22

申请号：US11333522

申请日：2006-01-17

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01B7/14 ,  G01P3/42

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

摘要翻译： 在第一时间间隔期间，当第二检测器的输出是准确的时候，在第一时间间隔之后，使用第一，真实开启状态（TPOS）检测器检测通过磁性物品并转换到第二运行模式检测器的装置和方法。 相位比较器响应于第一和第二检测器的输出信号，并且提供指示两个输出信号之间的相位关系变化的控制信号。 由相位比较器控制的输出开关作为检测器输出信号，提供第一时间间隔期间的第一检测器输出信号，此后提供第二检测器输出信号。 与TPOS检测器相关联的阈值信号在第一时间间隔的第一部分期间处于固定电平，并且在第一时间间隔的第二部分期间响应于自动增益控制电路进行调整，以便减少相关的相位误差 从TPOS检测器转换到运行模式检测器。 还描述了用于更新作为峰 - 峰值磁场传感器信号的百分比的运行模式阈值信号的装置和方法，从而减少不必要的更新事件。

公开(公告)号：US07307824B2

公开(公告)日：2007-12-11

申请号：US11414961

申请日：2006-05-01

申请人： Alberto Bilotti ,  Glenn A. Forrest ,  Ravi Vig

发明人： Alberto Bilotti ,  Glenn A. Forrest ,  Ravi Vig

IPC分类号： H01H47/00

CPC分类号： H03K17/97 ,  H03K17/9517 ,  Y10T307/766

摘要： A switch which is magnetic pole insensitive is described. The switch includes a Hall effect sensor coupled to a threshold circuit which provides an output signal indicative of the proximity of a magnet, and hence a magnetic field, to the Hall effect sensor regardless of the orientation of the magnet to the Hall effect sensor.

摘要翻译： 描述了磁极不敏感的开关。 该开关包括耦合到阈值电路的霍尔效应传感器，其向霍尔效应传感器提供指示磁体接近的输出信号，并因此提供磁场，而不管磁体与霍尔效应传感器的取向如何。

公开(公告)号：US06692676B1

公开(公告)日：2004-02-17

申请号：US09837991

申请日：2001-04-19

申请人： Ravi Vig ,  Daniel S. Dwyer ,  Gregory R. Bowman ,  Sandra R. Pinelle ,  Terry R. Clapp

发明人： Ravi Vig ,  Daniel S. Dwyer ,  Gregory R. Bowman ,  Sandra R. Pinelle ,  Terry R. Clapp

IPC分类号： B29C4514

CPC分类号： H03K17/9517 ,  G01B7/001 ,  G01B7/023

摘要： A magnet structure including a magnet and an integral magnetically permeable concentrator and methods for making the same are provided. The concentrator is comprised of a plastic loaded with one or more magnetically permeable materials to a percentage suitable for providing desired magnetic field characteristics. The magnetic element may be comprised of a conventional magnetic material or a plastic loaded with one or more magnetic materials. An insert molding technique is described in which either the concentrator or magnetic element is prefabricated and inserted into a mold which is subsequently filled with a loaded plastic to provide the other component of the magnet structure. In an alternate fabrication technique, both the concentrator and magnet are sequentially formed by injection molding in the same mold. Also described is a magnet structure including a ring magnet having a central aperture in which a steel rod is disposed.

摘要翻译： 提供了一种包括磁体和一体磁导式集中器的磁体结构及其制造方法。 浓缩器由装有一种或多种导磁材料的塑料组成，其百分比适用于提供所需的磁场特性。 磁性元件可以由传统的磁性材料或装有一种或多种磁性材料的塑料构成。 描述了嵌入成型技术，其中将集中器或磁性元件预制并插入模具中，随后用模制的塑料填充以提供磁体结构的另一部件。 在替代的制造技术中，集中器和磁体都通过在相同的模具中注塑而顺序地形成。 还描述了一种磁体结构，其包括具有设置钢棒的中心孔的环形磁体。

公开(公告)号：US5442283A

公开(公告)日：1995-08-15

申请号：US117516

申请日：1993-09-03

申请人： Ravi Vig ,  Hitoshi Yabusaki ,  Alberto Bilotti

发明人： Ravi Vig ,  Hitoshi Yabusaki ,  Alberto Bilotti

IPC分类号： G01D5/245 ,  G01D5/14 ,  G01P3/487 ,  G01P3/488 ,  G01P3/489 ,  G01R33/07 ,  G01R33/06 ,  G01B7/14 ,  H03K5/22

CPC分类号： G01P3/489 ,  G01D5/147 ,  G01P3/488 ,  Y10T307/766

摘要： The Hall sensor circuit includes a Hall element that is preferably followed by a Hall-voltage amplifier, and a pole end of a magnet is preferably fixed adjacent to the Hall element. The amplifier output is connected directly to one of a pair of differential inputs of a Schmitt trigger circuit and is also connected, via a single or a dual-polarity track and hold circuit, to the other of the differential Schmitt inputs. The dual-polarity track and hold circuit causes the voltage across a capacitor to track positive and negative Hall voltage slopes, and to hold the positive-going peaks and negative-going peaks of the Hall voltage presented to the fore-mentioned other Schmitt input so that when the difference voltage between the Hall voltage and the held voltage of the capacitor exceeds a positive or negative threshold of the Schmitt circuit, the Schmitt circuit output changes binary state indicating the approaching edge or the receding edge of a ferrous-gear tooth. The dual-polarity track and hold circuit is made up of two complementary plus and a minus peak detector circuits, each including a bipolar transistor having an emitter connected to the voltage-holding capacitor, an operational amplifier with an output connected to the base of the transistor, the amplifier having a negative input connected to the transistor emitter and a positive input serving as the input of the each Hall voltage tracking and holding circuit.

摘要翻译： 霍尔传感器电路包括霍尔元件，霍尔元件优选地被霍尔电压放大器跟随，磁体的极端优选地固定在霍尔元件附近。 放大器输出直接连接到施密特触发电路的一对差分输入之一，并且还通过单极性或双极性跟踪和保持电路连接到另一个差分施密特输入。 双极性跟踪保持电路使电容器两端的电压跟踪正和负霍尔电压斜率，并保持向上述其他施密特输入端所呈现的霍尔电压的正向峰值和负向峰值，从而 当霍尔电压和电容器的保持电压之间的差值电压超过施密特电路的正或负阈值时，施密特电路输出改变指示铁齿轮齿的接近边缘或后退边缘的二进制状态。 双极性跟踪和保持电路由两个互补正和负峰值检测器电路组成，每个电路包括一个连接到保压电容器的发射极的双极晶体管，一个输出端连接到电压保持电容器的运算放大器 晶体管，具有连接到晶体管发射极的负输入的放大器和用作每个霍尔电压跟踪和保持电路的输入的正输入。

公开(公告)号：US08754640B2

公开(公告)日：2014-06-17

申请号：US13526106

申请日：2012-06-18

申请人： Ravi Vig ,  P. Karl Scheller ,  Devon Fernandez ,  Christine Graham ,  Paul David

发明人： Ravi Vig ,  P. Karl Scheller ,  Devon Fernandez ,  Christine Graham ,  Paul David

IPC分类号： G01B7/30 ,  G01R33/00 ,  G01R33/07

CPC分类号： G01R33/0035 ,  G01R33/072

摘要： A magnetic field sensor can provide an output signal indicative of a passing condition or a failing condition of the magnetic field sensor. The output signal has one of a variety of output signal formats.

摘要翻译： 磁场传感器可以提供表示磁场传感器的通过状态或故障状态的输出信号。 输出信号具有各种输出信号格式之一。