公开(公告)号：US12276992B2

公开(公告)日：2025-04-15

申请号：US18309613

申请日：2023-04-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tarunvir Singh ,  Shubham Panjrath ,  Anant Kamath

IPC: G05F1/56 ,  H03K17/687

Abstract: A circuit includes a supply circuit having an input and an output. The supply circuit includes: a capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the supply circuit; a switch having a first terminal, a second terminal, and a control terminal, the first terminal of the switch coupled to the input of the supply circuit, the second terminal of the switch coupled to the output of the supply circuit; and a controller coupled to the control terminal of the switch. The controller is configured to: turn on the switch responsive to a first supply voltage level at the input of the supply circuit; and turn off the switch responsive to a second supply voltage level at the input of the supply circuit.

公开(公告)号：US12183672B2

公开(公告)日：2024-12-31

申请号：US17677729

申请日：2022-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ujwal Radhakrishna ,  Vinod Rai ,  Yogesh Ramadass ,  Anant Kamath ,  Kashyap Barot

IPC: H01L23/525 ,  H02H3/04

Abstract: A device includes first and second device terminals, a fuse, a first circuit, a first transistor, and a control circuit. The fuse terminal couples to the first device terminal. The first circuit couples to the second fuse terminal. The second fuse terminal has a first voltage. The first transistor has a first control input and first and second current terminals. The first current terminal couples to the second fuse terminal, and the second current terminal couples to the second device terminal. The control circuit: turns “on” the first transistor into a saturation region if the first voltage exceeds a threshold and a current through the fuse exceeds a trip threshold current of the fuse; and turns “on” the first transistor into a linear region if the first voltage exceeds a threshold and a current through the fuse is below the trip threshold current of the fuse.

公开(公告)号：US20180041130A1

公开(公告)日：2018-02-08

申请号：US15669345

申请日：2017-08-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Keith Edmund Kunz ,  Anant Kamath ,  Maurizio Granato ,  Prajkta Vyavahare

IPC: H02M3/335 ,  H02M1/32

CPC classification number: H02M3/33507 ,  H02M1/32 ,  H02M3/33523

Abstract: Methods and systems for providing electrical power using an isolated DC-DC converter, including the actions of: a) providing current to a primary side of a transformer at multiple predetermined open loop current levels using a power supply, said power supply providing said open loop current levels in increasing amplitude order and at predetermined times, said open loop current levels and times being selected to ramp a voltage across output terminals connected to a secondary side of said transformer so that after said power supply provides a maximum one of said open loop current levels, said voltage reaches a threshold sufficient to enable a closed loop controller connected to said output terminals to send a feedback signal to said primary side, said threshold being insufficient to fully power said output terminals; and b) sending said feedback signal to said primary side using said closed loop controller when said voltage reaches said threshold, said power supply controlled in response to said feedback signal to continue providing current to said primary side at closed loop current levels, said feedback signal selected to control said power supply to increase said closed loop current levels until said output terminals are fully powered.

公开(公告)号：US20250030413A1

公开(公告)日：2025-01-23

申请号：US18224830

申请日：2023-07-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anant Kamath ,  Taisuke Kazama ,  Sombuddha Chakraborty

IPC: H03K17/06 ,  H03K17/687

Abstract: An integrated circuit is provided which comprises a transistor and a driver coupled to a gate of the transistor. In at least one example, the driver controls an operation of the transistor, wherein the driver is operable in a first configuration as a low-side gate driver for a voltage regulator, and wherein the transistor is operable in the first configuration as a low-side switch for the voltage regulator. In at least one example, the driver is operable in a second configuration as a high-side gate driver for the voltage regulator, and wherein the transistor is operable in the second configuration as a high-side switch for the voltage regulator.

公开(公告)号：US20240235504A9

公开(公告)日：2024-07-11

申请号：US17972518

申请日：2022-10-24

Applicant: Texas Instruments Incorporated

Inventor： Harsh Sheokand ,  Tarunvir Singh ,  Anant Kamath ,  Suvadip Banerjee

IPC: H03F3/45

CPC classification number: H03F3/45654 ,  H03F3/45183 ,  H03F2203/45526

Abstract: A system includes an operational amplifier which includes a first amplifier input, a second amplifier input and an amplifier output. The system includes a first switch which includes a first terminal and includes a second terminal coupled to the first amplifier input. The system includes a second switch which includes a first terminal coupled to the first amplifier input and a second terminal coupled to the second amplifier input. The system includes a first bias current source coupled between the first amplifier input and a common potential and includes a second bias current source coupled between the first terminal of the first switch and the common potential. The system includes a feedback path between the amplifier output and the first amplifier input.

公开(公告)号：US20240235422A1

公开(公告)日：2024-07-11

申请号：US18153249

申请日：2023-01-11

Applicant: Texas Instruments Incorporated

Inventor： Anant Kamath ,  Suvadip Banerjee

IPC: H02M7/538 ,  B60L50/51 ,  H02M1/00

CPC classification number: H02M7/538 ,  B60L50/51 ,  H02M1/0064 ,  B60L2210/44

Abstract: In described examples, a converter circuit includes a primary-side ground, a current sensor, a control signal generator, first and second control switches, and a transformer with a center-tapped primary-side coil. A first terminal of the first control switch is coupled to a first terminal of the coil and a first input of the current sensor. A first terminal of the second control switch is coupled to a second terminal of the coil and a second input of the current sensor. Second terminals of the first and second control switches are coupled to ground. The control signal generator closes the first control switch and opens the second control switch in a first phase; opens the first control switch and closes the second control switch in a second phase that alternates with the first phase; and adjusts first phase duration in response to current sensor output, without changing converter period duration.

公开(公告)号：US10291225B2

公开(公告)日：2019-05-14

申请号：US15728230

申请日：2017-10-09

Applicant: Texas Instruments Incorporated

Inventor： Xiong Li ,  Anant Kamath

IPC: H03K17/18 ,  H03K17/567 ,  G01R31/28

Abstract: An isolated insulated gate bipolar transistor (IGBT) gate driver is provided which integrates circuits, in-module, to support the measurements of threshold voltage, and collector-emitter saturation voltage of IGBTs. The measured gate threshold and collector-emitter saturation voltage can be used as precursors for state of health predictions for IGBTs. During the measurements, IGBTs are biased under specific conditions chosen to quickly elicit collector-emitter saturation and gate threshold information. Integrated analog-to-digital converter (ADC) circuits are used to convert measured analog signals to a digital format. The digitalized signals are transferred to a micro controller unit (MCU) for further processing through serial peripheral interface (SPI) circuits.

公开(公告)号：US20230065119A1

公开(公告)日：2023-03-02

申请号：US17709812

申请日：2022-03-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mark E. Wentroble ,  Suzanne M. Vining ,  Rakesh Hariharan ,  Anant Kamath ,  Prajwala Puttappa

IPC: G06F13/38 ,  G06F13/42 ,  G06F9/4401

Abstract: Various configurations of high-speed data communication devices, e.g., repeaters, interfacing between a host and a peripheral, and methods of operating the same, are provided to improve the Remote Wake sequence. Repeaters include circuitry to detect the start of Resume signaling or the end of Resume, following initiation of Remote Wake. In an example, pull-up resistors coupled to upstream differential signal lines and a detection circuit with a current source are controlled to detect the start of Resume signaling. In another example, the upstream-side pull-resistors and an enable signal to an upstream-side transmitter are controlled to detect the end of Resume.

公开(公告)号：US11239839B2

公开(公告)日：2022-02-01

申请号：US17014828

申请日：2020-09-08

Applicant: Texas Instruments Incorporated

Inventor： Xiong Li ,  Anant Kamath

IPC: G01R31/26 ,  H03K17/18 ,  H03K17/567 ,  G01R31/28 ,  G01R31/42

Abstract: In a power supply system, a high-side (HS) insulated-gate bipolar transistor (IGBT) has a first collector, a first gate, and a first emitter. A low-side (LS) IGBT has a second collector coupled to the first emitter, a second gate, and a second emitter. A gate drive circuit is coupled to the first gate of the HS IGBT and the second gate of the LS IGBT. A control circuit is coupled to the gate drive circuit. The control circuit is configured to control the gate drive circuit for biasing the HS IGBT to a HS saturation, and determine a HS degradation of the HS IGBT based on a HS digitized gate voltage of the HS IGBT in the HS saturation.

公开(公告)号：US10771052B2

公开(公告)日：2020-09-08

申请号：US16371331

申请日：2019-04-01

Applicant: Texas Instruments Incorporated

Inventor： Xiong Li ,  Anant Kamath

IPC: H03K17/18 ,  H03K17/567 ,  G01R31/28 ,  G01R31/26 ,  G01R31/42

Abstract: An isolated insulated gate bipolar transistor (IGBT) gate driver is provided which integrates circuits, in-module, to support the measurements of threshold voltage, and collector-emitter saturation voltage of IGBTs. The measured gate threshold and collector-emitter saturation voltage can be used as precursors for state of health predictions for IGBTs. During the measurements, IGBTs are biased under specific conditions chosen to quickly elicit collector-emitter saturation and gate threshold information. Integrated analog-to-digital converter (ADC) circuits are used to convert measured analog signals to a digital format. The digitalized signals are transferred to a micro controller unit (MCU) for further processing through serial peripheral interface (SPI) circuits.