Patents by Inventor Chandra NYSHADHAM

Chandra NYSHADHAM 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: 11927624
    Abstract: One example includes a method for measuring a quiescent current in a switching voltage regulator. The method includes generating a mathematical model of a circuit design associated with the switching voltage regulator. The mathematical model includes measurable parameters to describe a switching current of a power switch of the switching voltage regulator. The method also includes fabricating a circuit comprising the switching voltage regulator based on the circuit design. The fabricated circuit includes the power switch and conductive I/O. The method also includes coupling the conductive I/O of the fabricated circuit to a circuit test fixture and providing electrical signals to the conductive I/O via the circuit test fixture. The method also includes measuring the measurable parameters in response to the electrical signals and applying the measurable parameters to the mathematical model to calculate the switching current.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: March 12, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Harsh Patel, Aalok Dyuti Saha, Sanjeev Praphulla Chandra Nyshadham, Subrato Roy, Gaurav Kumar Mittal
  • Patent number: 11914412
    Abstract: In described examples, a circuit includes a first current mirror circuit. The first current mirror circuit is coupled to a power input terminal. A first stage is coupled to the first current mirror circuit, and a second stage is coupled to the first stage and to the first current mirror circuit. An amplifier is coupled to the first and second stages. The amplifier has first and second input terminals. The first input terminal is coupled to the first stage, and the second input terminal is coupled to the second stage. A second current mirror circuit is coupled to the first stage, the second stage and the amplifier.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: February 27, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sanjeev Praphulla Chandra Nyshadham, Subrato Roy
  • Publication number: 20230417829
    Abstract: One example includes a method for measuring a quiescent current in a switching voltage regulator. The method includes generating a mathematical model of a circuit design associated with the switching voltage regulator. The mathematical model includes measurable parameters to describe a switching current of a power switch of the switching voltage regulator. The method also includes fabricating a circuit comprising the switching voltage regulator based on the circuit design. The fabricated circuit includes the power switch and conductive I/O. The method also includes coupling the conductive I/O of the fabricated circuit to a circuit test fixture and providing electrical signals to the conductive I/O via the circuit test fixture. The method also includes measuring the measurable parameters in response to the electrical signals and applying the measurable parameters to the mathematical model to calculate the switching current.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 28, 2023
    Inventors: HARSH PATEL, Aalok Dyuti Saha, Sanjeev Praphulla Chandra Nyshadham, Subrato Roy, Gaurav Kumar Mittal
  • Publication number: 20220413539
    Abstract: In described examples, a circuit includes a first current mirror circuit. The first current mirror circuit is coupled to a power input terminal. A first stage is coupled to the first current mirror circuit, and a second stage is coupled to the first stage and to the first current mirror circuit. An amplifier is coupled to the first and second stages. The amplifier has first and second input terminals. The first input terminal is coupled to the first stage, and the second input terminal is coupled to the second stage. A second current mirror circuit is coupled to the first stage, the second stage and the amplifier.
    Type: Application
    Filed: June 27, 2022
    Publication date: December 29, 2022
    Inventors: Sanjeev Praphulla Chandra Nyshadham, Subrato Roy
  • Patent number: 11294034
    Abstract: A proximity sensor (1) with crosstalk compensation comprises a transmitting circuit (10) to transmit a signal to be reflected at a target (2) and a disturbing object (3), and a receiving circuit (20) to receive a reflected signal (RS) having a useful component (RSI) and a noise component (RS2). The receiving circuit (20) comprises an output node (A20) to provide an output signal (Vout2) in dependence from the distance of the proximity sensor (1) from the target (2). The receiving circuit (20) comprises a crosstalk compensation circuit (100) comprising a first charging circuit (110) to provide a first charge for for coarse crosstalk compensation and a second charging circuit (120) to provide a second charge for fine crosstalk compensation. A control circuit (30) sets an amount of the first and the second charge so that the output signal (Vout2) of the crosstalk compensation circuit (100) is dependent on the useful component (RSI) and independent on the noise component (RS2) of the reflected signal (RS).
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: April 5, 2022
    Assignee: AMS AG
    Inventors: Josef Kriebernegg, Chandra Nyshadham, Rahul Thottathil, Hafeez Koonari Thoombath
  • Patent number: 11199516
    Abstract: A measurement circuitry (MC) for evaluating a resistance of a resistive gas sensor (GS) comprises a first current path (P1), wherein a first logarithmic compression circuit (LC1) is arranged in the first current path (P1). A reference resistor (Rreference) and a second logarithmic compression circuit (LC2) is arranged in a second current path (P2) of the measurement circuitry (MC). A voltage generator (VG) provides a fixed voltage excitation for the resistive gas sensor (GS) and the reference resistor (Rreference). A first current (I1) received from the resistive gas sensor (GS) flows from the gas sensor (GS) via the first current path (P1) into the first logarithmic compression circuit (LC1). An evaluation circuit (EC) determines the resistance (Rs) of the resistive gas sensor (GS) in dependence on a first and second output signal (Ve1, Ve2) of the first and the second logarithmic compression circuit (LC1, LC2).
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: December 14, 2021
    Assignee: AMS INTERNATIONAL AG
    Inventors: Rohit Ranganathan, Sanjeev Praphulla Chandra Nyshadham, Krishna Kanth Avalur, Ravi Kumar Adusumalli, Prasad Ponnada
  • Patent number: 10826523
    Abstract: An analog-to-digital converter (10) comprises a first and a second sampling capacitor (24, 25), a first integrator (26), a first and a second input switch (31, 32) coupling a first input terminal (11) and a common mode terminal (39) to a first electrode of the first sampling capacitor (24), a third and a fourth input switch (33, 34) coupling a second input terminal (12) and the common mode terminal (39) to a first electrode of the second sampling capacitor (25), a fifth and a sixth input switch (35, 36) coupling a second electrode of the first sampling capacitor (24) to an amplifier common mode terminal (40) and the first integrator input (27), and a seventh and an eighth input switch (37, 38) coupling a second electrode of the second sampling capacitor (25) to the amplifier common mode terminal (40) and the second integrator input (28).
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 3, 2020
    Assignee: ams AG
    Inventors: Ravi Kumar Adusumalli, Sudhakar Singamala, Veeresh Babu Vulligaddala, Rohit Ranganathan, Chandra Nyshadham, Krishna Kanth Avalur, Parvathy Sasikala Jayachandran Pillai
  • Publication number: 20200150230
    Abstract: A proximity sensor (1) with crosstalk compensation comprises a transmitting circuit (10) to transmit a signal to be reflected at a target (2) and a disturbing object (3), and a receiving circuit (20) to receive a reflected signal (RS) having a useful component (RSI) and a noise component (RS2). The receiving circuit (20) comprises an output node (A20) to provide an output signal (Vout2) in dependence from the distance of the proximity sensor (1) from the target (2). The receiving circuit (20) comprises a crosstalk compensation circuit (100) comprising a first charging circuit (110) to provide a first charge for for coarse crosstalk compensation and a second charging circuit (120) to provide a second charge for fine crosstalk compensation. A control circuit (30) sets an amount of the first and the second charge so that the output signal (Vout2) of the crosstalk compensation circuit (100) is dependent on the useful component (RSI) and independent on the noise component (RS2) of the reflected signal (RS).
    Type: Application
    Filed: June 12, 2018
    Publication date: May 14, 2020
    Inventors: Josef Kriebernegg, Chandra NYSHADHAM, Rahul Thottathil, Hafeez KOONARI THOOMBATH
  • Publication number: 20200083901
    Abstract: An analog-to-digital converter (10) comprises a first and a second sampling capacitor (24, 25), a first integrator (26), a first and a second input switch (31, 32) coupling a first input terminal (11) and a common mode terminal (39) to a first electrode of the first sampling capacitor (24), a third and a fourth input switch (33, 34) coupling a second input terminal (12) and the common mode terminal (39) to a first electrode of the second sampling capacitor (25), a fifth and a sixth input switch (35, 36) coupling a second electrode of the first sampling capacitor (24) to an amplifier common mode terminal (40) and the first integrator input (27), and a seventh and an eighth input switch (37, 38) coupling a second electrode of the second sampling capacitor (25) to the amplifier common mode terminal (40) and the second integrator input (28).
    Type: Application
    Filed: May 4, 2018
    Publication date: March 12, 2020
    Inventors: Ravi Kumar ADUSUMALLI, Sudhakar Singamala, Veeresh Babu VULLIGADDALA, Rohit RANGANATHAN, Chandra NYSHADHAM, Krishna Kanth AVALUR, Parvathy SASIKALA JAYACHANDRAN PILLAI
  • Publication number: 20200033284
    Abstract: A measurement circuitry (MC) for evaluating a resistance of a resistive gas sensor (GS) comprises a first current path (P1), wherein a first logarithmic compression circuit (LC1) is arranged in the first current path (P1). A reference resistor (Rreference) and a second logarithmic compression circuit (LC2) is arranged in a second current path (P2) of the measurement circuitry (MC). A voltage generator (VG) provides a fixed voltage excitation for the resistive gas sensor (GS) and the reference resistor (Rreference). A first current (I1) received from the resistive gas sensor (GS) flows from the gas sensor (GS) via the first current path (P1) into the first logarithmic compression circuit (LC1). An evaluation circuit (EC) determines the resistance (Rs) of the resistive gas sensor (GS) in dependence on a first and second output signal (Ve1, Ve2) of the first and the second logarithmic compression circuit (LC1, LC2).
    Type: Application
    Filed: September 6, 2017
    Publication date: January 30, 2020
    Inventors: Rohit RANGANATHAN, Sanjeev Praphulla Chandra NYSHADHAM, Krishna Kanth AVALUR, Ravi Kumar ADUSUMALLI, Prasad PONNADA