Patents by Inventor Pablo Javier Bolsinger
Pablo Javier Bolsinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11848682Abstract: Apparatus includes an ADC configured to convert an analog signal to a digital signal, a comparator having a first input responsive to the analog signal, a second input responsive to the digital signal, and an output at which a comparison signal is provided, and an output checker configured to process the comparison signal to generate a fault signal indicative of whether a fault has occurred in the ADC. The comparator can be an analog comparator in which case the digital signal is converted to an analog signal for the comparison or a digital comparator in which case an additional ADC is provided to convert the analog signal into a digital signal for the comparison. Embodiments include more than one ADC in which case summation elements are provided to sum the analog signals and the digital signals for the comparison.Type: GrantFiled: January 11, 2022Date of Patent: December 19, 2023Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger, Juan Manuel Cesaretti
-
Patent number: 11768259Abstract: A multichannel magnetic field sensor including a plurality of magnetic field sensing elements includes a multiplexed signal path. A front end amplifier is coupled to receive a first magnetic field signal during a first time interval and a second magnetic field signal during a second time interval. A first low pass filter processes the amplified signal during the first time interval and a second low pass filter processes the amplified signal during the second time interval. A sinc filter is coupled to receive the first low pass filtered signal during the first time interval and the second low pass filtered signal during the second time interval. A Schmitt trigger circuit includes a comparator to process the sinc filter output signal and to generate a first comparator output signal during the first time interval and a second comparator output signal is provided during the second time interval.Type: GrantFiled: September 8, 2022Date of Patent: September 26, 2023Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20230223949Abstract: Apparatus includes an ADC configured to convert an analog signal to a digital signal, a comparator having a first input responsive to the analog signal, a second input responsive to the digital signal, and an output at which a comparison signal is provided, and an output checker configured to process the comparison signal to generate a fault signal indicative of whether a fault has occurred in the ADC. The comparator can be an analog comparator in which case the digital signal is converted to an analog signal for the comparison or a digital comparator in which case an additional ADC is provided to convert the analog signal into a digital signal for the comparison. Embodiments include more than one ADC in which case summation elements are provided to sum the analog signals and the digital signals for the comparison.Type: ApplicationFiled: January 11, 2022Publication date: July 13, 2023Applicant: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger, Juan Manuel Cesaretti
-
Patent number: 11561257Abstract: A method for testing a signal path in a sensor, the signal path including a filter circuit and a comparator circuit, the method including: closing a first signal line that is arranged to bypass a first capacitor in the filter circuit; injecting a test signal into the signal path after the first signal line is closed; and detecting whether a signal that is output by the comparator circuit in response to the test signal satisfies a predetermined condition.Type: GrantFiled: December 22, 2020Date of Patent: January 24, 2023Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20220196739Abstract: A method for testing a signal path in a sensor, the signal path including a filter circuit and a comparator circuit, the method including: closing a first signal line that is arranged to bypass a first capacitor in the filter circuit; injecting a test signal into the signal path after the first signal line is closed; and detecting whether a signal that is output by the comparator circuit in response to the test signal satisfies a predetermined condition.Type: ApplicationFiled: December 22, 2020Publication date: June 23, 2022Applicant: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20210247213Abstract: A magnetic field sensor includes one or more magnetic field sensing elements operable to generate a respective one or more magnetic field signals indicative of a magnetic field associated with an object, and one or more channel detector circuits coupled to receive one or more of the one or more magnetic field signals. The one or more channel detector circuits are configured to generate a respective one or more channel signals. The sensor also includes an output protocol circuit coupled to receive the one or more channel signals. The output protocol circuit is configured to generate a sensor output signal comprising distinguishable constant current levels associated with the one or more channel signals.Type: ApplicationFiled: February 11, 2020Publication date: August 12, 2021Applicant: Allegro MicroSystems, LLCInventors: Ryan J. Metivier, Pablo Javier Bolsinger
-
Patent number: 10908230Abstract: A sensor includes an output circuit configured to generate a sensor output signal based on an input signal having a logic high or low level, as may be provided by a Schmitt trigger circuit. During normal operation, the output switches between a first percentage of the supply voltage for logic high and a second percentage of the supply voltage for logic low. To convey a failure at the output, an output signal is output as either ground or the supply voltage when a fault is detected. As such, a fault can be communicated any time the output voltage is not equal to the first percentage or the second percentage of the supply voltage.Type: GrantFiled: June 15, 2020Date of Patent: February 2, 2021Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20200309866Abstract: A sensor includes an output circuit configured to generate a sensor output signal based on an input signal having a logic high or low level, as may be provided by a Schmitt trigger circuit. During normal operation, the output switches between a first percentage of the supply voltage for logic high and a second percentage of the supply voltage for logic low. To convey a failure at the output, an output signal is output as either ground or the supply voltage when a fault is detected. As such, a fault can be communicated any time the output voltage is not equal to the first percentage or the second percentage of the supply voltage.Type: ApplicationFiled: June 15, 2020Publication date: October 1, 2020Applicant: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Patent number: 10746814Abstract: Apparatus and methods provide an output signal indicative of a failure of a filter circuit and/or a Schmitt trigger circuit of a magnetic field sensor. A magnetic field sensor includes one or more magnetic field sensing elements that generate a magnetic field signal, a filter circuit that filters the magnetic field signal, a Schmitt trigger circuit that compares the filtered signal to a Schmitt trigger threshold during a first time period, and a diagnostic circuit coupled to the filter circuit that compares the Schmitt trigger threshold to a diagnostic threshold during a second time period that does not overlap with the first time period. An output signal indicative of a failure is output when the diagnostic threshold is greater than a predetermined percentage or absolute value above or below the Schmitt trigger threshold.Type: GrantFiled: June 21, 2018Date of Patent: August 18, 2020Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Patent number: 10725122Abstract: A sensor includes an output circuit configured to generate a sensor output signal based on an input signal having a logic high or low level, as may be provided by a Schmitt trigger circuit. During normal operation, the output switches between a first percentage of the supply voltage for logic high and a second percentage of the supply voltage for logic low. To convey a failure at the output, an output signal is output as either ground or the supply voltage when a fault is detected. As such, a fault can be communicated any time the output voltage is not equal to the first percentage or the second percentage of the supply voltage.Type: GrantFiled: July 20, 2018Date of Patent: July 28, 2020Assignee: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Patent number: 10627458Abstract: A sensor is provided having a magnetic field sensing element to generate a magnetic field signal, a switching circuit coupled to receive the magnetic field signal and generate a switching signal that changes a polarity of the magnetic field signal at a predetermined frequency, and a comparison device configured to receive the switching signal and generate an output signal that changes a level in response to the switching signal crossing a predetermined threshold. The switching circuit is disposed between the magnetic field sensing element and the comparison device and can provide the comparison device an input signal (i.e., the switching signal) that changes polarity at the predetermined frequency. The comparison device can sense characteristics, such as but not limited to crossing operate and release threshold levels, of both north and south polarity magnetic field signals using the switching signal.Type: GrantFiled: September 25, 2017Date of Patent: April 21, 2020Assignee: Allegro MicroSystems, LLCInventor: Pablo Javier Bolsinger
-
Publication number: 20200025837Abstract: A sensor includes an output circuit configured to generate a sensor output signal based on an input signal having a logic high or low level, as may be provided by a Schmitt trigger circuit. During normal operation, the output switches between a first percentage of the supply voltage for logic high and a second percentage of the supply voltage for logic low. To convey a failure at the output, an output signal is output as either ground or the supply voltage when a fault is detected. As such, a fault can be communicated any time the output voltage is not equal to the first percentage or the second percentage of the supply voltage.Type: ApplicationFiled: July 20, 2018Publication date: January 23, 2020Applicant: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20190391212Abstract: Apparatus and methods provide an output signal indicative of a failure of a filter circuit and/or a Schmitt trigger circuit of a magnetic field sensor. A magnetic field sensor includes one or more magnetic field sensing elements that generate a magnetic field signal, a filter circuit that filters the magnetic field signal, a Schmitt trigger circuit that compares the filtered signal to a Schmitt trigger threshold during a first time period, and a diagnostic circuit coupled to the filter circuit that compares the Schmitt trigger threshold to a diagnostic threshold during a second time period that does not overlap with the first time period. An output signal indicative of a failure is output when the diagnostic threshold is greater than a predetermined percentage or absolute value above or below the Schmitt trigger threshold.Type: ApplicationFiled: June 21, 2018Publication date: December 26, 2019Applicant: Allegro MicroSystems, LLCInventors: Ezequiel Rubinsztain, Pablo Javier Bolsinger
-
Publication number: 20190094313Abstract: A sensor is provided having a magnetic field sensing element to generate a magnetic field signal, a switching circuit coupled to receive the magnetic field signal and generate a switching signal that changes a polarity of the magnetic field signal at a predetermined frequency, and a comparison device configured to receive the switching signal and generate an output signal that changes a level in response to the switching signal crossing a predetermined threshold. The switching circuit is disposed between the magnetic field sensing element and the comparison device and can provide the comparison device an input signal (i.e., the switching signal) that changes polarity at the predetermined frequency. The comparison device can sense characteristics, such as but not limited to crossing operate and release threshold levels, of both north and south polarity magnetic field signals using the switching signal.Type: ApplicationFiled: September 25, 2017Publication date: March 28, 2019Applicant: Allegro MicroSystems, LLCInventor: Pablo Javier Bolsinger
-
Patent number: 10006970Abstract: An electronic comparison circuit can identify at least three conditions of an input signal received by the electronic comparison circuit. A first one of the at least three conditions occurs when a value of the input signal is less than a first threshold value, a second one of the at least three conditions occurs when a value of the input signal is greater than the first threshold value and less than a second threshold value, and a third one of the at least three conditions occurs when a value of the input signal is greater than the second threshold value. A magnetic field sensor can use the electronic comparison circuit.Type: GrantFiled: March 18, 2015Date of Patent: June 26, 2018Assignee: Allegro MicroSystems, LLCInventors: Manuel Rivas, Juan Manuel Cesaretti, Pablo Javier Bolsinger
-
Publication number: 20150268312Abstract: An electronic comparison circuit can identify at least three conditions of an input signal received by the electronic comparison circuit. A first one of the at least three conditions occurs when a value of the input signal is less than a first threshold value, a second one of the at least three conditions occurs when a value of the input signal is greater than the first threshold value and less than a second threshold value, and a third one of the at least three conditions occurs when a value of the input signal is greater than the second threshold value. A magnetic field sensor can use the electronic comparison circuit.Type: ApplicationFiled: March 18, 2015Publication date: September 24, 2015Applicant: ALLEGRO MICROSYSTEMS, LLCInventors: Manuel Rivas, Juan Manuel Cesaretti, Pablo Javier Bolsinger
-
Patent number: 6690155Abstract: A sensor includes a Hall cell and a compensation circuit for subtracting a magnet background field from the Hall cell output to provide a signal corresponding to rotations of a toothed ferrous gear.Type: GrantFiled: March 25, 2002Date of Patent: February 10, 2004Assignee: Allegro Microsystems, Inc.Inventors: Ravi Vig, Alberto Bilotti, Pablo Javier Bolsinger
-
Publication number: 20030178989Abstract: A sensor includes a Hall cell and a compensation circuit for subtracting a magnet background field from the Hall cell output to provide a signal corresponding to rotations of a toothed ferrous gear.Type: ApplicationFiled: March 25, 2002Publication date: September 25, 2003Inventors: Ravi Vig, Alberto Bilotti, Pablo Javier Bolsinger