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    Electric devices, integrated circuits, and methods for monitoring voltages
    51.
    发明授权
    Electric devices, integrated circuits, and methods for monitoring voltages 有权

    公开(公告)号：US11662756B2

    公开(公告)日：2023-05-30

    申请号：US17246817

    申请日：2021-05-03

    Applicant: Infineon Technologies AG

    Inventor： Mario Motz ,  Umberto Aracri ,  Alessandro Michelutti

    IPC: G05F1/571 ,  G01K7/01 ,  G01R19/165 ,  G05F3/30

    CPC classification number: G05F1/571 ,  G01K7/01 ,  G01R19/1659 ,  G01R19/16538 ,  G05F3/30

    Abstract: An integrated circuit includes a first bandgap voltage reference sub-circuit configured to provide a first bandgap reference voltage; a second bandgap voltage reference sub-circuit configured to provide a second bandgap reference voltage; a voltage regulator sub-circuit configured to derive a first supply voltage using the first bandgap reference voltage and a second supply voltage using the second bandgap reference voltage; a bandgap comparator sub-circuit configured to derive a first internal voltage and a second internal voltage from the first supply voltage, wherein the first internal voltage decreases at a higher rate than the second internal voltage with respect to a decreasing first supply voltage, wherein the bandgap comparator sub-circuit is configured indicate which of the first and the second internal voltages is larger; and a comparator sub-circuit configured to indicate whether a difference between the first supply voltage and the second supply voltage is larger than a predefined threshold.

    Sensors using digitally assisted 1/x analog gain compensation
    52.
    发明授权
    Sensors using digitally assisted 1/x analog gain compensation 有权

    公开(公告)号：US10830835B2

    公开(公告)日：2020-11-10

    申请号：US16744882

    申请日：2020-01-16

    Applicant: Infineon Technologies AG

    Inventor： Leneesh Raghavan ,  Mario Motz

    IPC: G01R33/00 ,  G01R33/07

    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 arranged on an analog signal path and configured to generate an analog output sensor signal having a gained value with respect to the analog input sensor signal; a switchable compensation capacitor disposed in a negative feedback path of the inverting amplifier, where the switchable compensation capacitor is configured to control a bandwidth of the analog signal path based on configuration information; and a digital controller configured to receive at least one measurement parameter, generate the configuration information based on the at least one measurement parameter, and transmit the configuration information to the switchable compensation capacitor for adjusting the bandwidth of the analog signal path.

    Stress compensation systems and methods in sensors
    53.
    发明授权
    Stress compensation systems and methods in sensors 有权

    公开(公告)号：US10481032B2

    公开(公告)日：2019-11-19

    申请号：US15232432

    申请日：2016-08-09

    Applicant: Infineon Technologies AG

    Inventor： Udo Ausserlechner ,  Mario Motz

    IPC: G01L27/00 ,  G01L1/00 ,  G01D3/02

    Abstract: Embodiments relate to stress compensation in differential sensors. In an embodiment, instead of compensating for stress on each sensor element independently, stress compensation circuitry aims to remove stress-related mismatch between two sensor elements using the sensor elements themselves to detect the mismatch. A circuit can be implemented in embodiments to detect mechanical stress-related mismatch between sensor elements using the sensor elements, and tune the output signal by a compensation factor to eliminate the mismatch. Embodiments are therefore less complicated and less expensive than conventional approaches. While embodiments have applicability to virtually any differential sensor, including magnetic field, pressure, temperature, current and speed, an example embodiment discussed herein relates to magnetic field.

    Sensor self-diagnostics using multiple signal paths
    55.
    发明授权
    Sensor self-diagnostics using multiple signal paths 有权

    公开(公告)号：US10101379B2

    公开(公告)日：2018-10-16

    申请号：US15132783

    申请日：2016-04-19

    Applicant: Infineon Technologies AG

    Inventor： Friedrich Rasbornig ,  Mario Motz ,  Dirk Hammerschmidt ,  Ferdinand Gastinger ,  Bernhard Schaffer ,  Wolfgang Granig

    IPC: G01R31/00 ,  G01D3/08 ,  B60T8/88 ,  G01R31/26 ,  G01R31/28

    Abstract: Embodiments relate to systems and methods for sensor self-diagnostics using multiple signal paths. In an embodiment, the sensors are magnetic field sensors, and the systems and/or methods are configured to meet or exceed relevant safety or other industry standards, such as SIL standards. For example, a monolithic integrated circuit sensor system implemented on a single semiconductor ship can include a first sensor device having a first signal path for a first sensor signal on a semiconductor chip; and a second sensor device having a second signal path for a second sensor signal on the semiconductor chip, the second signal path distinct from the first signal path, wherein a comparison of the first signal path signal and the second signal path signal provides a sensor system self-test.

    SENSOR WITH MICRO BREAK COMPENSATION
    56.
    发明申请
    SENSOR WITH MICRO BREAK COMPENSATION 审中-公开

    公开(公告)号：US20170322264A1

    公开(公告)日：2017-11-09

    申请号：US15658564

    申请日：2017-07-25

    Applicant: Infineon Technologies AG

    Inventor： Mario Motz

    IPC: G01R33/00 ,  G01R33/02

    CPC classification number: G01R33/0023 ,  G01R33/02

    Abstract: A sensor device includes a high voltage circuit, a sensor and a charge storage. The sensor utilizes a low voltage supply. The high voltage circuit includes a blocking device and a regulating device. The blocking device is configured to block negative voltages of the high voltage supply. The regulated device is configured to receive a high voltage supply and generate the low voltage supply from the high voltage supply. The high voltage supply is DC. The charge storage has a vertical capacitor and is configured to maintain the low voltage supply during a power break and to store and maintain charge during non-break periods.

    MAGNETIC SENSOR
    57.
    发明申请
    MAGNETIC SENSOR 审中-公开

    公开(公告)号：US20170131366A1

    公开(公告)日：2017-05-11

    申请号：US14935871

    申请日：2015-11-09

    Applicant: Infineon Technologies AG

    Inventor： Mario Motz ,  Leneesh Raghavan

    IPC: G01R33/00 ,  G01R33/07

    CPC classification number: G01R33/0029 ,  G01R33/07

    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.

    LOW-POWER ACTIVATION CIRCUIT WITH MOTION DETECTOR
    60.
    发明申请
    LOW-POWER ACTIVATION CIRCUIT WITH MOTION DETECTOR 审中-公开
    具有运动检测器的低功率激活电路

    公开(公告)号：US20170019103A1

    公开(公告)日：2017-01-19

    申请号：US15281776

    申请日：2016-09-30

    Applicant: Infineon Technologies AG

    Inventor： Mario Motz

    IPC: H03K17/95 ,  G01R19/00 ,  G01R17/02

    CPC classification number: H03K17/9517 ,  G01D5/142 ,  G01P3/489 ,  G01P13/00 ,  G01R17/02 ,  G01R19/0092 ,  G01R33/0029 ,  H03K5/2472 ,  H03K17/94

    Abstract: The present disclosure relates to a method and apparatus to perform a low power activation of a system. In one embodiment, the apparatus includes a sensor element configured to output a sensor output signal corresponding to a sensed quantity to a digital difference detection circuit. The digital difference detection circuit has a digital measurement element configured to track the sensor output signal and generate a digital signal therefrom, a digital storage element configured to store previous digital signals corresponding to the sensor output signal generated over time, and a difference detector configured to detect a difference between a current digital signal and at least one of the previous digital signals. If the difference is larger than a digital reference level, the difference detector causes an activation signal generator to generate an activation signal that awakens a system from a sleep mode or a low-power mode.

    Abstract translation: 本公开涉及一种执行系统的低功率激活的方法和装置。 在一个实施例中，该装置包括传感器元件，其被配置为将对应于感测量的传感器输出信号输出到数字差分检测电路。 数字差分检测电路具有数字测量元件，其被配置为跟踪传感器输出信号并从其生成数字信号;数字存储元件，被配置为存储与随时间生成的传感器输出信号相对应的先前数字信号;以及差分检测器， 检测当前数字信号与至少一个之前的数字信号之间的差异。 如果差值大于数字参考电平，则差分检测器使激活信号发生器产生唤醒系统从睡眠模式或低功率模式的激活信号。

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