Patents by Inventor Akshat Jain
Akshat Jain 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).
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Patent number: 11859860Abstract: A tube guide for a heating, ventilation, and/or air conditioning (HVAC) system includes a main body formed from a pliable material, a first slit formed through the main body, and a second slit formed through the main body and traversing the first slit to define a tube support location configured to receive a range of tube sizes.Type: GrantFiled: May 20, 2021Date of Patent: January 2, 2024Assignee: Johnson Controls Tyco IP Holdings LLPInventors: Satish Churi Veerappa, Akshay S. Baljekar, Akshat Jain
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Three-phase power factor controller implemented with single-phase power factor correction controller
Patent number: 11855527Abstract: A PFC correction circuit includes first, second, and third phase inputs coupled to three-phase power mains, with a three-phase full-wave rectifying bridge connected to an input node. First, second, and third boost inductors are respectively connected between first, second, and third phase inputs and first, second, and third taps of the three-phase full-wave rectifying bridge. A boost switch is connected between the input node and ground, and a boost diode is connected between the input node and an output node. A multiplier input driver generates a single-phase input signal as a replica of a signal at the three-phase power mains after rectification. A single-phase power factor controller generates a PWM signal from the single-phase input signal. A gate driver generates a gate drive signal from the PWM signal. The boost switch is operated by the gate drive signal.Type: GrantFiled: June 7, 2022Date of Patent: December 26, 2023Assignee: STMicroelectronics International N.V.Inventors: Ranajay Mallik, Akshat Jain -
THREE-PHASE POWER FACTOR CONTROLLER IMPLEMENTED WITH SINGLE-PHASE POWER FACTOR CORRECTION CONTROLLER
Publication number: 20230396155Abstract: A PFC correction circuit includes first, second, and third phase inputs coupled to three-phase power mains, with a three-phase full-wave rectifying bridge connected to an input node. First, second, and third boost inductors are respectively connected between first, second, and third phase inputs and first, second, and third taps of the three-phase full-wave rectifying bridge. A boost switch is connected between the input node and ground, and a boost diode is connected between the input node and an output node. A multiplier input driver generates a single-phase input signal as a replica of a signal at the three-phase power mains after rectification. A single-phase power factor controller generates a PWM signal from the single-phase input signal. A gate driver generates a gate drive signal from the PWM signal. The boost switch is operated by the gate drive signal.Type: ApplicationFiled: June 7, 2022Publication date: December 7, 2023Applicant: STMicroelectronics International N.V.Inventors: Ranajay MALLIK, Akshat JAIN -
Publication number: 20230387783Abstract: Methods of operating an induction geyser include drawing current through a resonant tank via a transistor, generating a changing magnetic field around the resonant tank. Owing to the strategic placement of the resonant tank in proximity to a fluid tank, the changing magnetic field envelopes the fluid tank. In a first method, the voltage across the transistor's conduction terminals is monitored, and when this voltage surpasses a predefined threshold, indicating an overvoltage condition, a corrective action is initiated in which a gate driver pulls up a gate drive signal that drives the transistor. In a second method, the current flowing between the transistor's conduction terminals is monitored, and upon detecting an overcurrent condition where the current exceeds a set threshold the gate driver is activated to pull down the gate drive signal. Both methods aim to keep operation of the geyser within desired parameters.Type: ApplicationFiled: August 15, 2023Publication date: November 30, 2023Applicant: STMicroelectronics International N.V.Inventor: Akshat JAIN
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Patent number: 11764662Abstract: A circuit includes a transistor, with a resonant tank coupled between a DC supply node and a first conduction terminal of the transistor. A gate driver generates a gate drive signal for biasing a control terminal of the transistor to cause it to conduct current through the resonant tank. Control circuitry monitors a voltage across the transistor to determine that the transistor is an overvoltage condition if that voltage exceeds a threshold, and monitors a current through the transistor to determine that the transistor is an overcurrent condition if that current exceeds a threshold. If overvoltage is determined, the control circuitry causes the gate driver to pull up the gate drive signal. If overcurrent is determined, the control circuitry causes the gate driver to pull down the gate drive signal. If either overvoltage or overcurrent is present, a pulse width of the gate drive signal is reduced.Type: GrantFiled: August 4, 2020Date of Patent: September 19, 2023Assignee: STMicroelectronics International N.V.Inventor: Akshat Jain
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Patent number: 11681517Abstract: A server responds to a request to perform a first automation task to process a work item from the plurality of work items, on a first computing device that is separate and independent from the server. The server receives a request from the first computing device to download the first automation task and queries a distribution information file to identify one or more other computing devices that have a copy of the first automation task. The server provides to the first computing device, an identifier for each of one or more other computing devices that has a copy of the first automation task. If the distribution information file does not contain an identification of any other device that has a copy of the first automation task, then the server processor causes the first automation task to be retrieved and to be provided to the first computing device.Type: GrantFiled: August 2, 2021Date of Patent: June 20, 2023Assignee: Automation Anywhere, Inc.Inventors: Akshat Jain, Anoop Tripathi, Abhijit Kakhandiki
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Patent number: 11621645Abstract: A driving circuit including a reference voltage generator to generate a reference voltage based on an operating frequency of a complementary circuit; a comparator including a first input configured to receive a drain-to-source voltage of a field effect transistor; and a second input to receive the reference voltage; and a signal generator to deliver a driving signal to a gate terminal of the field effect transistor to drive the field effect transistor to an ON state after the drain-to-source voltage of the first low side field effect transistor becomes less than the reference voltage and to an OFF state after the drain-to-source voltage of the field effect transistor becomes greater than the reference voltage.Type: GrantFiled: June 4, 2020Date of Patent: April 4, 2023Assignees: STMicroelectronics International N.V., STMicroelectronics S.r.l.Inventors: Akshat Jain, Ivan Clemente Massimiani
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Publication number: 20220190708Abstract: A method includes receiving a plurality of digital feedback signals from a voltage converter, controlling the voltage converter based upon a user desired brightness level and the plurality of digital feedback signals, the voltage converter receiving input from a DC voltage bus and providing output to drive a lighting load, and receiving a plurality of feedback signals from a power factor correction circuit that receives a rectified mains voltage and provides output to the DC voltage bus, and based thereupon operating the power factor correction circuit in transition mode or discontinuous mode based upon the user desired brightness level and a threshold brightness. The plurality of feedback signals include an input sense signal that is a function of the rectified mains voltage as drawn by the power factor correction circuit and an output sense signal that is a function of the output provided to the DC voltage bus.Type: ApplicationFiled: March 3, 2022Publication date: June 16, 2022Applicant: STMicroelectronics International N.V.Inventor: Akshat JAIN
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Patent number: 11296591Abstract: A LED driving circuit includes a power factor correction circuit receiving a rectified mains voltage and providing output to a DC voltage bus, a string of LEDs connected in series, a voltage converter receiving input from the DC voltage bus and providing output to the string of LEDs, and a microcontroller. The microcontroller receives a plurality of digital feedback signals from the voltage converter, controls the voltage converter based upon a user desired brightness level and the plurality of digital feedback signals, and receive a plurality of feedback signals from the power factor correction circuit. Based on the plurality of feedback signals, the microcontroller operates the power factor correction circuit in transition mode where the user desired brightness level is above a threshold brightness, and operates the power factor correction circuit in discontinuous mode where the user desired brightness level is below the threshold brightness.Type: GrantFiled: December 14, 2020Date of Patent: April 5, 2022Assignee: STMicroelectronics International N.V.Inventor: Akshat Jain
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Publication number: 20210384813Abstract: A driving circuit including a reference voltage generator to generate a reference voltage based on an operating frequency of a complementary circuit; a comparator including a first input configured to receive a drain-to-source voltage of a field effect transistor; and a second input to receive the reference voltage; and a signal generator to deliver a driving signal to a gate terminal of the field effect transistor to drive the field effect transistor to an ON state after the drain-to-source voltage of the first low side field effect transistor becomes less than the reference voltage and to an OFF state after the drain-to-source voltage of the field effect transistor becomes greater than the reference voltage.Type: ApplicationFiled: June 4, 2020Publication date: December 9, 2021Inventors: Akshat Jain, Ivan Clemente Massimiani
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Publication number: 20210364190Abstract: A tube guide for a heating, ventilation, and/or air conditioning (HVAC) system includes a main body formed from a pliable material, a first slit formed through the main body, and a second slit formed through the main body and traversing the first slit to define a tube support location configured to receive a range of tube sizes.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Satish Churi Veerappa, Akshay S. Baljekar, Akshat Jain
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Publication number: 20210365260Abstract: A server responds to a request to perform a first automation task to process a work item from the plurality of work items, on a first computing device that is separate and independent from the server. The server receives a request from the first computing device to download the first automation task and queries a distribution information file to identify one or more other computing devices that have a copy of the first automation task. The server provides to the first computing device, an identifier for each of one or more other computing devices that has a copy of the first automation task. If the distribution information file does not contain an identification of any other device that has a copy of the first automation task, then the server processor causes the first automation task to be retrieved and to be provided to the first computing device.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Inventors: Akshat Jain, Anoop Tripathi, Abhijit Kakhandiki
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Patent number: 11165334Abstract: A power supply has a transformer with primary and secondary windings. A first terminal of the primary-winding is coupled to a power-input. A PFC includes a low-voltage circuit correcting power factor of the power signal, having a supply-input receiving a supply voltage during normal operation, a feedback-input coupled to a first terminal of the secondary-winding, and a gate-drive-output. A high-voltage startup circuit powers the low-voltage circuit during startup. Periphery circuitry includes a transient voltage suppression diode having an anode coupled to supply power to the high-voltage startup circuit and a cathode coupled to the power-input, a diode having an anode coupled to the first terminal of the secondary-winding and a cathode coupled to the supply-input of the low-voltage circuit. A capacitor is coupled between the supply-input and ground. A transistor has a drain coupled to a second terminal of the primary-winding and a gate coupled to the gate-drive-output.Type: GrantFiled: February 26, 2020Date of Patent: November 2, 2021Assignee: STMicroelectronics International N.V.Inventors: Akshat Jain, Saurabh Sona
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Patent number: 11086614Abstract: A server responds to a request to perform a first automation task to process a work item from the plurality of work items, on a first computing device that is separate and independent from the server. The server receives a request from the first computing device to download the first automation task and queries a distribution information file to identify one or more other computing devices that have a copy of the first automation task. The server provides to the first computing device, an identifier for each of one or more other computing devices that has a copy of the first automation task. If the distribution information file does not contain an identification of any other device that has a copy of the first automation task, then the server processor causes the first automation task to be retrieved and to be provided to the first computing device.Type: GrantFiled: January 31, 2020Date of Patent: August 10, 2021Assignee: Automation Anywhere, Inc.Inventors: Akshat Jain, Anoop Tripathi, Abhijit Kakhandiki
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Publication number: 20210105874Abstract: A LED driving circuit includes a power factor correction circuit receiving a rectified mains voltage and providing output to a DC voltage bus, a string of LEDs connected in series, a voltage converter receiving input from the DC voltage bus and providing output to the string of LEDs, and a microcontroller. The microcontroller receives a plurality of digital feedback signals from the voltage converter, controls the voltage converter based upon a user desired brightness level and the plurality of digital feedback signals, and receive a plurality of feedback signals from the power factor correction circuit. Based on the plurality of feedback signals, the microcontroller operates the power factor correction circuit in transition mode where the user desired brightness level is above a threshold brightness, and operates the power factor correction circuit in discontinuous mode where the user desired brightness level is below the threshold brightness.Type: ApplicationFiled: December 14, 2020Publication date: April 8, 2021Applicant: STMicroelectronics International N.V.Inventor: Akshat JAIN
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Patent number: 10897192Abstract: A Darlington switch in series with a biasing circuit is biased in an ON state by default to generate a supply voltage for a controller integrated circuit chip during start-up. On powering up, the supply voltage for the controller integrated circuit chip rises. When the supply voltage exceeds a minimum operating voltage threshold, the controller integrated circuit chip is enabled for operation and an auxiliary supply circuit begins generating the supply voltage for the controller integrated circuit chip. The Darlington switch is turned OFF when the supply voltage being generated by the auxiliary circuit is sufficiently higher than a threshold associated with the minimum operating voltage threshold. The circuit for controlling ON/OFF state of the Darlington switch has a substantially lower static power dissipation than the biasing circuit.Type: GrantFiled: November 1, 2019Date of Patent: January 19, 2021Assignee: STMicroelectronics International N.V.Inventors: Akshat Jain, Saurabh Sona
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Patent number: 10869369Abstract: A LED driving circuit includes a power factor correction circuit receiving a rectified mains voltage and providing output to a DC voltage bus, a string of LEDs connected in series, a voltage converter receiving input from the DC voltage bus and providing output to the string of LEDs, and a microcontroller. The microcontroller receives a plurality of digital feedback signals from the voltage converter, controls the voltage converter based upon a user desired brightness level and the plurality of digital feedback signals, and receive a plurality of feedback signals from the power factor correction circuit. Based on the plurality of feedback signals, the microcontroller operates the power factor correction circuit in transition mode where the user desired brightness level is above a threshold brightness, and operates the power factor correction circuit in discontinuous mode where the user desired brightness level is below the threshold brightness.Type: GrantFiled: December 11, 2018Date of Patent: December 15, 2020Assignee: STMicroelectronics International N.V.Inventor: Akshat Jain
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Publication number: 20200366190Abstract: A circuit includes a transistor, with a resonant tank coupled between a DC supply node and a first conduction terminal of the transistor. A gate driver generates a gate drive signal for biasing a control terminal of the transistor to cause it to conduct current through the resonant tank. Control circuitry monitors a voltage across the transistor to determine that the transistor is an overvoltage condition if that voltage exceeds a threshold, and monitors a current through the transistor to determine that the transistor is an overcurrent condition if that current exceeds a threshold. If overvoltage is determined, the control circuitry causes the gate driver to pull up the gate drive signal. If overcurrent is determined, the control circuitry causes the gate driver to pull down the gate drive signal. If either overvoltage or overcurrent is present, a pulse width of the gate drive signal is reduced.Type: ApplicationFiled: August 4, 2020Publication date: November 19, 2020Applicant: STMicroelectronics International N.V.Inventor: Akshat JAIN
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Publication number: 20200304019Abstract: A power supply has a transformer with primary and secondary windings. A first terminal of the primary-winding is coupled to a power-input. A PFC includes a low-voltage circuit correcting power factor of the power signal, having a supply-input receiving a supply voltage during normal operation, a feedback-input coupled to a first terminal of the secondary-winding, and a gate-drive-output. A high-voltage startup circuit powers the low-voltage circuit during startup. Periphery circuitry includes a transient voltage suppression diode having an anode coupled to supply power to the high-voltage startup circuit and a cathode coupled to the power-input, a diode having an anode coupled to the first terminal of the secondary-winding and a cathode coupled to the supply-input of the low-voltage circuit. A capacitor is coupled between the supply-input and ground. A transistor has a drain coupled to a second terminal of the primary-winding and a gate coupled to the gate-drive-output.Type: ApplicationFiled: February 26, 2020Publication date: September 24, 2020Applicant: STMicroelectronics International N.V.Inventors: Akshat JAIN, Saurabh SONA
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Patent number: 10778082Abstract: Disclosed herein is a circuit including a transistor, with a resonant tank coupled between a DC supply node and a first conduction terminal of the transistor. A gate driver generates a gate drive signal for biasing a control terminal of the transistor to cause it to conduct current through the resonant tank. Control circuitry monitors a voltage across the transistor to determine that the transistor is an overvoltage condition if that voltage exceeds a threshold, and monitors a current through the transistor to determine that the transistor is an overcurrent condition if that current exceeds a threshold. If overvoltage is determined, the control circuitry causes the gate driver to pull up the gate drive signal. If overcurrent is determined, the control circuitry causes the gate driver to pull down the gate drive signal. If either overvoltage or overcurrent is present, a pulse width of the gate drive signal is reduced.Type: GrantFiled: June 8, 2018Date of Patent: September 15, 2020Assignee: STMicroelectronics International N.V.Inventor: Akshat Jain