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公开(公告)号：US11171641B2
公开(公告)日：2021-11-09
申请号：US16654791
申请日：2019-10-16
Inventor： Matthew Beardsworth , Tejasvi Das , Siddharth Maru , Luke Lapointe
IPC: H03K17/14 , H03K17/975 , H03K17/97
Abstract: A system may include a sensor configured to output a sensor signal indicative of a distance between the sensor and a mechanical member associated with the sensor, a measurement circuit communicatively coupled to the sensor and configured to determine a physical force interaction with the mechanical member based on the sensor signal, and a compensator configured to monitor the sensor signal and to apply a compensation factor to the sensor signal to compensate for changes to properties of the sensor based on at least one of changes in a distance between the sensor and the mechanical member and changes in a temperature associated with the sensor.
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22.发明授权公开(公告)号：US11092657B2
公开(公告)日：2021-08-17
申请号：US16354695
申请日：2019-03-15
Inventor： Siddharth Maru , Tejasvi Das , Zhong You
Abstract: A system may include a resonant phase sensing system comprising a resistive-inductive-capacitive sensor and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor, and a compensation circuit. The measurement circuit may be configured to use a phase detector to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a metal plate relative to the resistive-inductive-capacitive sensor. The compensation circuit may be configured to detect a change in a physical property associated with the resistive-inductive-capacitive sensor other than the displacement and compensate the phase information to correct for the change in the physical property.
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公开(公告)号：US09973156B2
公开(公告)日：2018-05-15
申请号：US15285038
申请日：2016-10-04
Inventor： Eric J. King , Zhaohui He , John L. Melanson , Siddharth Maru
CPC classification number: H03F3/2171 , H02M5/293 , H02M2005/2932 , H03F1/0216 , H03F1/0227 , H03F1/32 , H03F3/185 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/153 , H03F2200/432 , H04R3/12
Abstract: A method may include processing a first signal derived from an input signal with a first path to generate a first path voltage at a first path output, processing a second signal derived from the input signal with a second path to generate a second path voltage at a second path output, the second path comprising a linear amplifier having at least one transistor for driving the second path voltage, generating the first signal and the second signal with a signal splitter, such that the second signal comprises information of the input signal absent from the first signal, and such that the second path voltage is of a sufficient magnitude such that the at least one transistor operates in a saturation region of the at least one transistor throughout a dynamic range of a load voltage equal to the difference of the first path voltage and the second path voltage.
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公开(公告)号：US12292309B2
公开(公告)日：2025-05-06
申请号：US17211073
申请日：2021-03-24
Inventor： Siddharth Maru , Josh Sanz-Robinson , Tejasvi Das , John L. Melanson
Abstract: A system may include a plurality of sensors configured to sense a physical quantity and a calibration subsystem configured to perform a calibration comprising: comparing a measured characteristic from each of at least two sensors of the plurality of sensors to determine a sensitivity drift of at least one sensor of the plurality of sensors; based on the measured characteristics of the at least two sensors and stored reference characteristics for the at least two sensors, calculating a normalization factor; and applying the normalization factor to the measured characteristic of the at least one sensor to ensure sensitivity of the plurality of sensors relative to each other remains approximately constant.
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公开(公告)号：US12163986B2
公开(公告)日：2024-12-10
申请号：US17846832
申请日：2022-06-22
Inventor： Anand Ilango , Siddharth Maru , Tejasvi Das , John L. Melanson
Abstract: A system may include amplifier circuitry configured to drive an electromagnetic load with a driving signal and a processing system communicatively coupled to the electromagnetic load and configured to compensate for current-sensing error of the processing system caused by feedback circuitry of the amplifier circuitry.
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Patent Agency Ranking
公开(公告)号：US12113429B1
公开(公告)日：2024-10-08
申请号：US18697813
申请日：2023-03-10
Inventor： Siddharth Maru , Bryan McCoy , Chanchal Gupta , Rosario Pagano
CPC classification number: H02M1/0032 , H02M3/1566 , H02M3/158
Abstract: The controller for a system including a power converter may be configured to cause the system to operate in one of a low-power mode and the high-power mode based on power demand from a load at the output of the power converter and when in the low-power mode, monitor the output of the power converter to detect an occurrence of a load transient from the load and in response to detecting the occurrence of the load transient, transition from the low-power mode to the high-power mode via a transition mode to minimize undershoot and overshoot of the output voltage.
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公开(公告)号：US11979115B2
公开(公告)日：2024-05-07
申请号：US17739480
申请日：2022-05-09
Inventor： Siddharth Maru , Chandra B. Prakash , Tejasvi Das
CPC classification number: H03F3/04 , B06B1/0207 , H03F2200/129 , H03F2200/481
Abstract: An amplifier system may include a first feedback loop coupled between an output of an amplifier to an input of a modulator for regulating an output voltage driven at the output of the amplifier to a first terminal of a load of the amplifier system, a sense resistor for sensing a physical quantity associated with the amplifier, a second control loop coupled to the sense resistor such that the sense resistor is outside of the second control loop, the second control loop configured to regulate a common-mode voltage at a second terminal of the load, and a common-mode feedforward circuit coupled to the sense resistor and configured to minimize effects of a signal-dependent common-mode feedback of the sense resistor.
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公开(公告)号：US11644494B1
公开(公告)日：2023-05-09
申请号：US17690402
申请日：2022-03-09
Inventor： Chandra B. Prakash , Tejasvi Das , Siddharth Maru
Abstract: Circuitry for driving a load, the circuitry comprising: driver circuitry; load sensing circuitry; and a parameter estimation engine, wherein the circuitry is operable in: a driving mode of operation in which the driver circuitry supplies a drive signal to a load coupled to the circuitry; and a load sensing mode of operation, for estimating a characteristic of a load coupled to the circuitry based on a signal output by the load sensing circuitry in response to a stimulus signal supplied to the driver circuitry, and wherein the circuitry is operable to perform a calibration operation in which the parameter estimation engine generates a circuit parameter for use in the load sensing mode based, at least in part, on a signal generated by the circuitry in response to a calibration stimulus signal supplied to the driver circuitry.
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公开(公告)号：US11619519B2
公开(公告)日：2023-04-04
申请号：US17170174
申请日：2021-02-08
Inventor： Luke Lapointe , Siddharth Maru , Tejasvi Das
Abstract: A system may include a plurality of sensors, a measurement circuit communicatively coupled to the plurality of sensors and configured to measure one or more physical quantities associated with the plurality of sensors, and a predictive optimization subsystem configured to detect an event associated with a first sensor of the plurality of sensors and responsive to the event, execute a predictive action with respect to one or more of the other sensors of the plurality of sensors.
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公开(公告)号：US11536758B2
公开(公告)日：2022-12-27
申请号：US16517046
申请日：2019-07-19
Inventor： Jason L. Wardlaw , Michael A. Kost , Anthony S. Doy , Tejasvi Das , Siddharth Maru , Xin Zhao , Matthew Beardsworth , Bruce E. Duewer
Abstract: A system may include an array of sensor elements, the array of sensor elements each comprising a first type of passive reactive element, a second type of passive reactive element electrically coupled to the array of sensor elements, a driver configured to drive the array of sensor elements and the second type of passive reactive element, and control circuitry configured to control enabling and disabling of individual sensor elements of the array of sensor elements to ensure no more than one of the array of sensor elements is enabled at a time such that when one of the array of sensor elements is enabled, the one of the array of sensor elements and the second type of passive reactive element together operate as a resonant sensor.
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