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).
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Patent number: 11927624Abstract: 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: GrantFiled: June 22, 2022Date of Patent: March 12, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Harsh Patel, Aalok Dyuti Saha, Sanjeev Praphulla Chandra Nyshadham, Subrato Roy, Gaurav Kumar Mittal
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Patent number: 11914412Abstract: 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: GrantFiled: June 27, 2022Date of Patent: February 27, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sanjeev Praphulla Chandra Nyshadham, Subrato Roy
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Publication number: 20230417829Abstract: 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: ApplicationFiled: June 22, 2022Publication date: December 28, 2023Inventors: HARSH PATEL, Aalok Dyuti Saha, Sanjeev Praphulla Chandra Nyshadham, Subrato Roy, Gaurav Kumar Mittal
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Publication number: 20220413539Abstract: 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: ApplicationFiled: June 27, 2022Publication date: December 29, 2022Inventors: Sanjeev Praphulla Chandra Nyshadham, Subrato Roy
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Patent number: 11294034Abstract: 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: GrantFiled: June 12, 2018Date of Patent: April 5, 2022Assignee: AMS AGInventors: Josef Kriebernegg, Chandra Nyshadham, Rahul Thottathil, Hafeez Koonari Thoombath
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Patent number: 11199516Abstract: 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: GrantFiled: September 6, 2017Date of Patent: December 14, 2021Assignee: AMS INTERNATIONAL AGInventors: Rohit Ranganathan, Sanjeev Praphulla Chandra Nyshadham, Krishna Kanth Avalur, Ravi Kumar Adusumalli, Prasad Ponnada
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Patent number: 10826523Abstract: 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: GrantFiled: May 4, 2018Date of Patent: November 3, 2020Assignee: ams AGInventors: Ravi Kumar Adusumalli, Sudhakar Singamala, Veeresh Babu Vulligaddala, Rohit Ranganathan, Chandra Nyshadham, Krishna Kanth Avalur, Parvathy Sasikala Jayachandran Pillai
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Publication number: 20200150230Abstract: 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: ApplicationFiled: June 12, 2018Publication date: May 14, 2020Inventors: Josef Kriebernegg, Chandra NYSHADHAM, Rahul Thottathil, Hafeez KOONARI THOOMBATH
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Publication number: 20200083901Abstract: 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: ApplicationFiled: May 4, 2018Publication date: March 12, 2020Inventors: Ravi Kumar ADUSUMALLI, Sudhakar Singamala, Veeresh Babu VULLIGADDALA, Rohit RANGANATHAN, Chandra NYSHADHAM, Krishna Kanth AVALUR, Parvathy SASIKALA JAYACHANDRAN PILLAI
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Publication number: 20200033284Abstract: 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: ApplicationFiled: September 6, 2017Publication date: January 30, 2020Inventors: Rohit RANGANATHAN, Sanjeev Praphulla Chandra NYSHADHAM, Krishna Kanth AVALUR, Ravi Kumar ADUSUMALLI, Prasad PONNADA