Patents by Inventor Manish Bhardwaj

Manish Bhardwaj 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).

  • Publication number: 20240362146
    Abstract: Systems, apparatus, articles of manufacture, and methods are disclosed for real-time trip sequence detection for cascaded trip events. An example integrated circuit device includes trip detector circuitry, a first counter, a first memory, a second counter, a second memory, and control circuitry in communication with the trip detector circuitry, the control circuitry to, in response to a first trigger detected by the fault detector circuit, store a value of the first counter in the first memory, and in response to a second trigger detected by the fault detector circuit, store a value of the second counter in the second memory. The trip detector circuitry will continue the same detection, identification and counter storage logic for the subsequent triggers limited only by the available storage capacity.
    Type: Application
    Filed: June 30, 2023
    Publication date: October 31, 2024
    Inventors: Karthikeyan Rajamanickam, Venkatesh Natarajan, Manish Bhardwaj
  • Publication number: 20240339925
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the input current drawn at an input of the power converter.
    Type: Application
    Filed: June 17, 2024
    Publication date: October 10, 2024
    Inventor: Manish Bhardwaj
  • Publication number: 20240324081
    Abstract: Four-switch buck boost power stages with reduced overshoot conditions at an output node are presented. Based on a detected condition for a decrease in a quantity of the active load elements, the method includes enabling an active discharge circuit coupled to an output node of a power stage before the quantity of the active load elements is decreased. Based on a detected condition for an increase in the quantity of the active load elements, the method includes activating the load elements and applying a restricted gain to the voltage conversion circuit.
    Type: Application
    Filed: June 27, 2023
    Publication date: September 26, 2024
    Inventors: Gustavo Martinez, Han Zhang, Robert Sheehan, Manish Bhardwaj
  • Patent number: 12051969
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the input current drawn at an input of the power converter.
    Type: Grant
    Filed: April 19, 2023
    Date of Patent: July 30, 2024
    Assignee: Texas Instruments Incorporated
    Inventor: Manish Bhardwaj
  • Publication number: 20230261566
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the input current drawn at an input of the power converter.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 17, 2023
    Inventor: Manish Bhardwaj
  • Patent number: 11720078
    Abstract: A system comprising a processor, a non-transitory memory, and an application stored in the non-transitory memory is provided. The application is configured, upon execution by the processor, to cause the processor to generate a first controller signal based on a first set of feedback from an electric motor, based on a characterization tone, and based on a controller gain, to provide the first controller signal for operation of the electric motor, to generate a frequency response analysis on a second set of feedback from the electric motor in response to the first controller signal, and to determine a new value of the controller gain based on the frequency response analysis.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 8, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramesh Tiruvannamalai Ramamoorthy, Sam Gnana Sabapathy, Manish Bhardwaj
  • Patent number: 11689350
    Abstract: A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: June 27, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Manish Bhardwaj, Venkataratna Subrahmanya Bharathi Akondy, Shamim Choudhury
  • Patent number: 11658564
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the an input current drawn at an input of the power converter.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: May 23, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Manish Bhardwaj
  • Patent number: 11616433
    Abstract: In a described example, a circuit includes a sensor, a controller and an amplifier. The sensor has a sensor input and a sensor output. The sensor input is adapted to be coupled to a chassis of a switch-mode power supply (SMPS). The controller has an input, a timing output and a level output. The input of the control circuit is coupled to the sensor output. The amplifier has a timing control input, a level control input and an amplifier output. The level control input is coupled to the level output of the controller. The timing control input is coupled to the timing output, and the amplifier output is coupled to the sensor input. The amplifier is configured to provide compensation pulses at the amplifier output having magnitude and timing to reduce common-mode noise on the chassis.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: March 28, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ashish Kumar, Yogesh Kumar Ramadass, Manish Bhardwaj
  • Publication number: 20220376884
    Abstract: A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.
    Type: Application
    Filed: June 7, 2022
    Publication date: November 24, 2022
    Inventors: Manish BHARDWAJ, Venkataratna Subrahmanya Bharathi AKONDY, Shamim CHOUDHURY
  • Publication number: 20220332204
    Abstract: Techniques related to powertrain architectures for vehicles (such as hybrid electric vehicle/electric vehicles) utilizing an on-board charger are disclosed. The techniques include a device for power regulation, the device comprising a direct current (DC)-to-DC voltage converter configurable to convert a first DC voltage from an alternating current (AC)-to-DC converter to generate a first converted DC voltage to charge a battery, and convert a second DC voltage from the battery to a second converted DC voltage for a DC-to-AC inverter. The inverter couples to a motor. A control circuit is configured to direct an operating mode of the voltage converter.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 20, 2022
    Inventors: Hui Tan, Manish Bhardwaj, Sangmin Kevin CHON
  • Patent number: 11437917
    Abstract: For predictive synchronous rectifier sensing and control, an example apparatus includes an air core toroid having a voltage output, the air core toroid adapted to surround a portion of a current path and adapted to be coupled through the current path to a transformer, and a control logic circuit having a voltage input and a control output, the voltage input coupled to the voltage output, and the control output adapted to be coupled to a switch.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: September 6, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sheng-Yang Yu, Manish Bhardwaj
  • Patent number: 11376977
    Abstract: Techniques related to powertrain architectures for vehicles (such as hybrid electric vehicle/electric vehicles) utilizing an on-board charger are disclosed. The techniques include a device for power regulation, the device comprising a direct current (DC)-to-DC voltage converter configurable to convert a first DC voltage from an alternating current (AC)-to-DC converter to generate a first converted DC voltage to charge a battery, and convert a second DC voltage from the battery to a second converted DC voltage for a DC-to-AC inverter. The inverter couples to a motor. A control circuit is configured to direct an operating mode of the voltage converter.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: July 5, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Hui Tan, Manish Bhardwaj, Sangmin Kevin Chon
  • Patent number: 11356238
    Abstract: A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: June 7, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Manish Bhardwaj, Venkataratna Subrahmanya Bharathi Akondy, Shamim Choudhury
  • Patent number: 11356308
    Abstract: Automatic Gain Control (AGC) system for multi-channel signals attenuates an incoming multi-channel signal by providing a gain. The system further adjusts each individual channel, of the multi-channel signal, by supplying a second gain if needed. The AGC system is designed to ensure a received signal power is at an optimal level for analog to digital conversion or any other form of signal processing. The system also enables elimination of mid-packet gain adjustments.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: June 7, 2022
    Assignee: EDGEWATER WIRELESS SYSTEMS INC.
    Inventors: Manish Bhardwaj, Garret Shih
  • Publication number: 20210313876
    Abstract: In a described example, a circuit includes a sensor, a controller and an amplifier. The sensor has a sensor input and a sensor output. The sensor input is adapted to be coupled to a chassis of a switch-mode power supply (SMPS). The controller has an input, a timing output and a level output. The input of the control circuit is coupled to the sensor output. The amplifier has a timing control input, a level control input and an amplifier output. The level control input is coupled to the level output of the controller. The timing control input is coupled to the timing output, and the amplifier output is coupled to the sensor input. The amplifier is configured to provide compensation pulses at the amplifier output having magnitude and timing to reduce common-mode noise on the chassis.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 7, 2021
    Inventors: ASHISH KUMAR, YOGESH KUMAR RAMADASS, MANISH BHARDWAJ
  • Publication number: 20210281165
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the an input current drawn at an input of the power converter.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 9, 2021
    Inventor: Manish Bhardwaj
  • Patent number: 11050344
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the an input current drawn at an input of the power converter.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: June 29, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Manish Bhardwaj
  • Publication number: 20210181711
    Abstract: A system comprising a processor, a non-transitory memory, and an application stored in the non-transitory memory is provided. The application is configured, upon execution by the processor, to cause the processor to generate a first controller signal based on a first set of feedback from an electric motor, based on a characterization tone, and based on a controller gain, to provide the first controller signal for operation of the electric motor, to generate a frequency response analysis on a second set of feedback from the electric motor in response to the first controller signal, and to determine a new value of the controller gain based on the frequency response analysis.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 17, 2021
    Inventors: Ramesh Tiruvannamalai Ramamoorthy, Sam Gnana Sabapathy, Manish Bhardwaj
  • Patent number: 11011976
    Abstract: A drive circuit includes a transient detector that includes a detector input to receive a loop error signal from a phased locked loop (PLL) and generates a transient detected output signal if a transient is detected in an alternating current (AC) input voltage. A controller includes a controller input to receive the transient detected output signal from the transient detector and a feedback input to sense the AC input voltage provided to a bridge circuit. The controller is configured to apply a PLL angle output signal from the PLL to control switch output signals to the bridge circuit if the transient detected output signal is not generated and configured to apply the AC input voltage sensed from the feedback input to control the switch output signals to the bridge circuit if the transient detected output signal is generated.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: May 18, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Manish Bhardwaj, Shamim Choudhury