Patents by Inventor Navaneeth Kumar Narayanasamy
Navaneeth Kumar Narayanasamy 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: 11962234Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.Type: GrantFiled: August 19, 2021Date of Patent: April 16, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan
-
Publication number: 20240079950Abstract: A pulse width modulator circuit with circuitry for providing a first and second pulse width modulation signal with dead time periods between the first and second pulse width modulation signals, an input for receiving a signal representative of a current in a load adapted to be driven in response to the first and second pulse width modulation signals, and circuitry coupled to the input for adjusting the dead time periods in response to the signal representative of a current.Type: ApplicationFiled: November 13, 2023Publication date: March 7, 2024Inventor: Navaneeth Kumar Narayanasamy
-
Publication number: 20240063783Abstract: An electronic circuit for controlling a power switch having a gate input, includes a signal generator configured to generate a gate driver input signal. The gate driver input signal has a first voltage during a first period of time, a second voltage during a second period of time, and toggles between the first voltage and the second voltage during a third period of time. The electronic circuit also includes a gate driver configured to receive the gate driver input signal and to provide a gate driver output signal based on the gate driver input signal. The signal generator is configured to cause the gate driver input signal to toggle during the third period of time such that the gate driver output signal has a third voltage during the second period of time, and an intermediate voltage that is less than the third voltage during the third period of time.Type: ApplicationFiled: August 17, 2022Publication date: February 22, 2024Inventor: Navaneeth Kumar Narayanasamy
-
Patent number: 11901881Abstract: An electronic circuit for controlling a power switch having a gate input, includes a signal generator configured to generate a gate driver input signal. The gate driver input signal has a first voltage during a first period of time, a second voltage during a second period of time, and toggles between the first voltage and the second voltage during a third period of time. The electronic circuit also includes a gate driver configured to receive the gate driver input signal and to provide a gate driver output signal based on the gate driver input signal. The signal generator is configured to cause the gate driver input signal to toggle during the third period of time such that the gate driver output signal has a third voltage during the second period of time, and an intermediate voltage that is less than the third voltage during the third period of time.Type: GrantFiled: August 17, 2022Date of Patent: February 13, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Navaneeth Kumar Narayanasamy
-
Publication number: 20240039397Abstract: A pulse width modulator circuit with circuitry for providing a first and second pulse width modulation signal with dead time periods between the first and second pulse width modulation signals, an input for receiving a signal representative of a current in a load adapted to be driven in response to the first and second pulse width modulation signals, and circuitry coupled to the input for adjusting the dead time periods in response to the signal representative of a current.Type: ApplicationFiled: July 28, 2022Publication date: February 1, 2024Inventor: Navaneeth Kumar Narayanasamy
-
Patent number: 11870338Abstract: A pulse width modulator circuit with circuitry for providing a first and second pulse width modulation signal with dead time periods between the first and second pulse width modulation signals, an input for receiving a signal representative of a current in a load adapted to be driven in response to the first and second pulse width modulation signals, and circuitry coupled to the input for adjusting the dead time periods in response to the signal representative of a current.Type: GrantFiled: July 28, 2022Date of Patent: January 9, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Navaneeth Kumar Narayanasamy
-
Patent number: 11689111Abstract: A circuit includes a solid-state relay, a rectifier, and a current transformer-based power supply. The rectifier is adapted to be coupled to the solid-state relay. The rectifier is configured to provide a voltage to an output terminal responsive to the solid-state relay being in an off state. The current transformer-based power supply is coupled to the rectifier and is adapted to be coupled to a transformer. The current transformer-based power supply is configured to provide a voltage to the output terminal responsive to the solid-state relay being in an on state.Type: GrantFiled: April 7, 2021Date of Patent: June 27, 2023Assignee: Texas Instruments IncorporatedInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan
-
Publication number: 20230170821Abstract: In an example, a rectifier circuit includes first and second capacitors, first and second current control devices, and a switch. The first current control device is configured to provide an input current to the first capacitor during a positive cycle of an alternating current (AC) input voltage. The second capacitor is configured to store a charge and the switch is configured to couple the second capacitor to a ground terminal so the second capacitor discharges a capacitor current during the positive cycle of the input voltage responsive to the stored charge in the second capacitor. The second current control device is configured to provide the capacitor current to the first capacitor during the positive cycle of the input voltage. The first capacitor is configured to store a charge responsive to the input current and the capacitor current.Type: ApplicationFiled: November 30, 2021Publication date: June 1, 2023Inventors: Navaneeth Kumar NARAYANASAMY, Sanjay DIXIT
-
Patent number: 11611343Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: GrantFiled: January 27, 2022Date of Patent: March 21, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan, Miroslav Oljaca
-
Publication number: 20230072415Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.Type: ApplicationFiled: November 14, 2022Publication date: March 9, 2023Inventors: Navaneeth Kumar Narayanasamy, Martin Staebler
-
Publication number: 20230059110Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.Type: ApplicationFiled: August 19, 2021Publication date: February 23, 2023Inventors: Navaneeth Kumar NARAYANASAMY, Manu BALAKRISHNAN
-
Patent number: 11579022Abstract: In described examples, a measurement circuit includes an isolated power supply that generates an output signal in response to an input signal. A signal processing circuit is coupled to the isolated power supply and generates a first signal in response to a sense signal. A load manipulator circuit is coupled to the signal processing circuit and the isolated power supply. The load manipulator circuit receives the first signal. A detect circuit is coupled to the isolated power supply and generates a second signal in response to the input signal.Type: GrantFiled: September 9, 2020Date of Patent: February 14, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Martin Staebler
-
Patent number: 11502629Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.Type: GrantFiled: December 30, 2020Date of Patent: November 15, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Martin Staebler
-
Publication number: 20220329168Abstract: A circuit includes a solid-state relay, a rectifier, and a current transformer-based power supply. The rectifier is adapted to be coupled to the solid-state relay. The rectifier is configured to provide a voltage to an output terminal responsive to the solid-state relay being in an off state. The current transformer-based power supply is coupled to the rectifier and is adapted to be coupled to a transformer. The current transformer-based power supply is configured to provide a voltage to the output terminal responsive to the solid-state relay being in an on state.Type: ApplicationFiled: April 7, 2021Publication date: October 13, 2022Inventors: Navaneeth Kumar NARAYANASAMY, Manu BALAKRISHNAN
-
Publication number: 20220209695Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.Type: ApplicationFiled: December 30, 2020Publication date: June 30, 2022Inventors: Navaneeth Kumar Narayanasamy, Martin Staebler
-
Publication number: 20220149838Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: ApplicationFiled: January 27, 2022Publication date: May 12, 2022Inventors: Navaneeth Kumar NARAYANASAMY, Manu BALAKRISHNAN, Miroslav OLJACA
-
Publication number: 20220074794Abstract: In described examples, a measurement circuit includes an isolated power supply that generates an output signal in response to an input signal. A signal processing circuit is coupled to the isolated power supply and generates a first signal in response to a sense signal. A load manipulator circuit is coupled to the signal processing circuit and the isolated power supply. The load manipulator circuit receives the first signal. A detect circuit is coupled to the isolated power supply and generates a second signal in response to the input signal.Type: ApplicationFiled: September 9, 2020Publication date: March 10, 2022Inventors: Navaneeth Kumar Narayanasamy, Martin Staebler
-
Patent number: 11271562Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: GrantFiled: October 16, 2020Date of Patent: March 8, 2022Assignee: Texas Instmments IncorporatedInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan, Miroslav Oljaca
-
Patent number: 11255887Abstract: A current measurement circuit includes first, second, and third conductors, a first current sensor, a second current sensor, and current computation circuitry. The first conductor is configured to conduct a first phase current of a three-phase current. The second conductor is configured to conduct a second phase current of the three-phase current. The third conductor is configured to conduct a third phase current of the three-phase current. The first current sensor is coupled to the first, the second, and the third conductors. The second current sensor is coupled to the second conductor and the third conductor. The current computation circuitry is coupled to the first current sensor and the second current sensor, and is configured to determine the first current, the second current, and the third current by applying an inverse Clarke transform to the output of the first current sensor and the output of the second current sensor.Type: GrantFiled: October 31, 2019Date of Patent: February 22, 2022Assignee: Texas Instruments IncorporatedInventor: Navaneeth Kumar Narayanasamy
-
Publication number: 20210132122Abstract: A current measurement circuit includes first, second, and third conductors, a first current sensor, a second current sensor, and current computation circuitry. The first conductor is configured to conduct a first phase current of a three-phase current. The second conductor is configured to conduct a second phase current of the three-phase current. The third conductor is configured to conduct a third phase current of the three-phase current. The first current sensor is coupled to the first, the second, and the third conductors. The second current sensor is coupled to the second conductor and the third conductor. The current computation circuitry is coupled to the first current sensor and the second current sensor, and is configured to determine the first current, the second current, and the third current by applying an inverse Clarke transform to the output of the first current sensor and the output of the second current sensor.Type: ApplicationFiled: October 31, 2019Publication date: May 6, 2021Inventor: Navaneeth Kumar NARAYANASAMY