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公开(公告)号：US20140368267A1
公开(公告)日：2014-12-18
申请号：US14476888
申请日：2014-09-04
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Manfred Bresch
CPC classification number: H03F3/38 , H03F1/02 , H03F3/387 , H03F3/45475 , H03F3/45977 , H03F2200/333 , H03F2200/411
Abstract: The present disclosure relate to a sensor system having a low offset error. In some embodiments, the sensor system comprises a sensor configured to generate a sensor signal, which is provided to a main signal path having a first chopping correction circuit and a second chopping correction circuit. The first and second chopping correction circuit chop the sensor signal at first and second frequencies to reduce offset errors, but in doing so generate first and second chopping ripple errors. A first digital offset feedback loop generates a first compensation signal, which is fed back into the main signal path to mitigate the first chopping ripple error. A second digital offset feedback loop generates a second compensation signal, which is fed back into the main signal path to mitigate the second chopping ripple error.
Abstract translation: 本公开涉及具有低偏移误差的传感器系统。 在一些实施例中，传感器系统包括被配置为产生传感器信号的传感器，传感器信号被提供给具有第一斩波校正电路和第二斩波校正电路的主信号路径。 第一和第二斩波校正电路以第一和第二频率切断传感器信号以减少偏移误差，但是这样做产生第一和第二斩波纹差。 第一数字偏移反馈环路产生第一补偿信号，其被反馈到主信号路径以减轻第一斩波纹误差。 第二数字偏移反馈环路产生第二补偿信号，其被反馈到主信号路径以减轻第二斩波纹差。
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公开(公告)号：US11879951B2
公开(公告)日：2024-01-23
申请号：US16395641
申请日：2019-04-26
Applicant: Infineon Technologies AG
Inventor： Mario Motz
CPC classification number: G01R33/07 , G01D5/142 , G01R33/0047 , G01R33/0052 , G01R33/0094 , G01R33/09 , H01L23/495 , H10N52/00 , H10N52/80
Abstract: Magnetic field sensor apparatuses are discussed. A magnetic field sensor apparatus in accordance with one example implementation in this case comprises a coil and a magnetic field sensor. A chip carrying the coil and the magnetic field sensor is arranged on a leadframe. The leadframe comprises a cutout.
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73.发明授权公开(公告)号：US11860047B2
公开(公告)日：2024-01-02
申请号：US17303055
申请日：2021-05-19
Applicant: Infineon Technologies AG
Inventor： Mario Motz
CPC classification number: G01L1/12 , G01R15/20 , G01R19/0092
Abstract: The subject matter described herein relates to a semiconductor circuit arrangement with a semiconductor substrate with an integrated Hall sensor circuit. During a first clock phase PHspin1 a first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) can be generated in the Hall effect region that has a first dependency on a mechanical stress of the semiconductor substrate. During a second clock phase PHspin2 a second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2) can be generated in the Hall effect region that has a second dependency on a mechanical stress of the semiconductor substrate. The semiconductor circuit arrangement is designed to ascertain a specific mechanical stress component based on a combination of the first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) and of the second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2).
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公开(公告)号：US11668767B2
公开(公告)日：2023-06-06
申请号：US17587109
申请日：2022-01-28
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Qinwen Fan , Amirhossein Jouyaeian , Kofi Makinwa
CPC classification number: G01R33/0023 , G01R15/18 , G01R15/202 , G01R19/32 , G01R33/07 , H03F3/45475 , G01R33/0082 , G01R33/075
Abstract: The present disclosure relates to a magnetic field sensor circuit including at least one coil for measuring a magnetic field, a first stage amplifier circuit coupled to the coil and having a first transfer function with a pole at a first frequency, and a second stage amplifier circuit coupled to an output of the first stage amplifier circuit and having a second transfer function with a zero at the first frequency. In some embodiments, a temperature dependent frequency drift of the pole of the first transfer function corresponds to a temperature dependent frequency drift of the zero of the second transfer function.
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公开(公告)号：US11385076B2
公开(公告)日：2022-07-12
申请号：US16841986
申请日：2020-04-07
Applicant: Infineon Technologies AG
Inventor： Massimiliano Zilli , Mario Motz
IPC: G01D5/14
Abstract: Sensor circuits having a filter and methods for filtering a sensor signal are provided. In this case, a passband width of an adjustable low-pass filter or bandpass filter is adjusted on the basis of a comparison of a measure of a signal change of a sensor signal with a threshold value.
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Patent Agency Ranking
公开(公告)号：US11329657B2
公开(公告)日：2022-05-10
申请号：US16778612
申请日：2020-01-31
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Veikko Summa
Abstract: An integrated circuit has an oscillator circuit having an on-chip oscillator, a digital phase locked loop and a sensor. A frequency of an output signal from the oscillator circuit is adjustable. The digital phase locked loop receives the output signal from the oscillator circuit at an input and a synchronization signal based on an output signal from an external precision oscillator in the form of a crystal oscillator or MEMS oscillator at an external interface and generates a control signal in order to synchronize the frequency of the oscillator circuit with the frequency of the external crystal oscillator. The sensor is designed to measure at least one environmental parameter, wherein the digital phase locked loop is designed to take into account the at least one measured environmental parameter when generating the control signal.
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公开(公告)号：US10578681B2
公开(公告)日：2020-03-03
申请号：US15794296
申请日：2017-10-26
Applicant: Infineon Technologies AG
Inventor： Leneesh Raghavan , Mario Motz
Abstract: Magnetic field sensors and sensing methods are provided. A magnetic sensor includes at least one magnetic field sensor element configured to generate an analog input sensor signal in response to a magnetic field, an inverting amplifier configured to generate an analog output sensor signal having a gained value with respect to the analog input sensor signal, a programmable current divider disposed in a negative feedback path of the inverting amplifier such that the gained value is dependent on an effective feedback resistor value of the programmable current divider, and a digital controller configured to receive at least one measurement parameter, generate a codeword based on the at least one measurement parameter, and transmit the codeword to the programmable current divider for compensating the gained value. The effective feedback resistor value is adjusted based on the codeword received by the programmable current divider.
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公开(公告)号：US20200011940A1
公开(公告)日：2020-01-09
申请号：US16030060
申请日：2018-07-09
Applicant: Infineon Technologies AG
Inventor： Mario Motz
Abstract: Various embodiments discussed herein can comprises systems or methods that can improve over existing spinning current Hall sensor systems via at least one of interleaving spinning phases or sliding averaging/summing. One example embodiment can comprise a sensor system comprising M (a positive integer) spinning current Hall sensors, each of which has N (an integer greater than one) distinct spinning phases during which it can acquire sensor data, and a multiplexer that can select sensor data of the sensors according to a M×N spinning phase sensor sequence. The M×N distinct spinning phases of the sensor sequence can be interleaved, wherein the average in the time domain of the N spinning phases for each sensor is the same. For each of the M sensors, a sum and/or an average can be determined for one or more most recent representations of sensor data from that sensor.
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公开(公告)号：US10261137B2
公开(公告)日：2019-04-16
申请号：US14935871
申请日：2015-11-09
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Leneesh Raghavan
Abstract: A sensor including a sensing device and a processor. The sensing device can be configured to sense one or more environmental conditions, such as one or more magnetic fields, and generate a sensor signal based on the sensed environmental condition(s). The processor can be configured to determine a gain mode and/or a zero-point mode of the sensor. Based on the determined gain and/or zero-point modes and the sensor signal, the processor can generate an output signal. The processor can include a voltage generator configured to generate a ratiometric voltage and/or a regulated voltage based on a supply voltage of the sensor. The processor can receive an external voltage. The gain mode and/or the zero-point mode can be independently determined based on the ratiometric, regulated, or external voltages. The ratiometric or regulated voltage can be output as a second output to form a differential output.
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公开(公告)号：US10184807B2
公开(公告)日：2019-01-22
申请号：US15276356
申请日：2016-09-26
Applicant: Infineon Technologies AG
Inventor： Mario Motz , Wolfgang Scherr
Abstract: The current disclosure relates to an angular sensor. The angular sensor includes a sensing module, a digital processor and an incremental interface. The sensing module is configured to generate a sensing signal containing measurements of rotation activities of a rotating physical entity. The digital processor is configured to process and store the sensing signal. The incremental interface is coupled to the digital processor and includes an incremental pulse generator and a status data encoder. The incremental pulse generator is configured to convert and transmit the sensing signal as incremental square pulses through a unidirectional signal line, which are processed to generate rotary angle and direction of the physical entity. The status data encoder is configured to convert and transmit the sensing signal as a reference pulse and a status signal through a bidirectional signal line, which can be to request an absolute angle position or other sensor data.
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