公开(公告)号：US09627962B2

公开(公告)日：2017-04-18

申请号：US14642735

申请日：2015-03-09

Applicant: Texas Instruments Incorporated

Inventor： Vishal Gupta ,  Ganapathi Shankar

IPC: H03K17/00 ,  H02M3/07 ,  H03K17/0412 ,  H03K17/082 ,  H02M1/00 ,  H03K17/08

CPC classification number: H02M3/07 ,  H02M2001/0029 ,  H02M2001/0048 ,  H03K17/04123 ,  H03K17/0822 ,  H03K2017/0806 ,  H03K2217/0009 ,  H03K2217/0054 ,  Y02B70/1491

Abstract: A fast blocking switch includes, for example, an energy storage device, a first power switch and a second power switch. The energy storage device stores a charge for fast activation of the switches. The first switch is operable for coupling input current to an output terminal in response to the coupling of a potential supplied by the stored charge to a control terminal of the first switch. The second switch is operable for coupling a limited amount of the input current to the output terminal in response to the coupling of a potential supplied by the stored charge to a control terminal of the second switch.

公开(公告)号：US20240405701A1

公开(公告)日：2024-12-05

申请号：US18204267

申请日：2023-05-31

Applicant: Texas Instruments Incorporated

Inventor： Ganapathi Shankar ,  Varun Garg ,  Venkata Naresh Kotikelapudi

IPC: H02P8/38

Abstract: An example apparatus includes: memory including machine-readable instructions; programmable circuitry configured to execute the machine-readable instructions of the memory configured to: determine a first value of power transferred to a stepper motor during a first operation of the stepper motor; determine a second value of power transferred to the stepper motor during a second operation of the stepper motor; determine a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power; and compare the load angle to a stall threshold to detect a stall of the stepper motor.

公开(公告)号：US20250076909A1

公开(公告)日：2025-03-06

申请号：US18240734

申请日：2023-08-31

Applicant: Texas Instruments Incorporated

Inventor： Venkatesh Guduri ,  Ganapathi Shankar

IPC: G05F1/575 ,  G05F3/26 ,  H03K17/082 ,  H03K17/10 ,  H03K17/687

Abstract: A load current sensing circuit includes a sense leg including a sense transistor with a gate coupled to the output of a high-side gate driver, a feedback transistor, and a sense resistor coupled in series between a power supply and ground. An amplifier has differential inputs coupled to the sense leg and to an output, and an output coupled to the feedback transistor gate. A bias circuit has a first transistor coupled between the power supply voltage and the first bias voltage terminal, and a gate receiving, from a first leg, a first differential from the output voltage. A second leg in the amplifier bias circuit generates a gate voltage, for a second transistor coupled between ground and a second bias voltage terminal, that is at a second differential from a voltage at the first bias voltage terminal. The amplifier is biased between the first and second bias voltages.

公开(公告)号：US20240291266A1

公开(公告)日：2024-08-29

申请号：US18204276

申请日：2023-05-31

Applicant: Texas Instruments Incorporated

Inventor： Ganapathi Shankar

IPC: H02H7/20

CPC classification number: H02H7/205

Abstract: An example apparatus includes: a transistor having a source, a drain, and a gate; first voltage clamp circuitry having a first terminal, a second terminal, and a third terminal, the first terminal of the first voltage clamp circuitry coupled to the source of the transistor, the second terminal of the first voltage clamp circuitry coupled to the gate of the transistor; second voltage clamp circuitry having a first terminal, a second terminal, a third terminal, and a fourth terminal, the first terminal of the second voltage clamp circuitry coupled to the drain of the transistor, the second terminal of the second voltage clamp circuitry coupled to the gate of the transistor, the third terminal of the second voltage clamp circuitry coupled to the source of the transistor; and clamp control circuitry having a first terminal, a second terminal, a third terminal, and a fourth terminal.

公开(公告)号：US20250080088A1

公开(公告)日：2025-03-06

申请号：US18240605

申请日：2023-08-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sreenath Puthumana ,  Ganapathi Shankar ,  Venkata Naresh Kotikelapudi

IPC: H03K3/017 ,  H01F7/06

Abstract: A circuit includes an amplifier having a first input, a reference input, and an output. A pulse width modulator (PWM) controller has an input coupled to the output of the amplifier. A first switch has a control terminal coupled to an output of the PWM controller. A second switch has a second terminal coupled to the second terminal of the first switch, and has a control terminal coupled to the output of the PWM controller. An input of a current sensor is coupled to the second terminal of the first switch and is coupled to a second terminal of the second switch. An output of the current sensor is coupled to the first input of the amplifier. A duty cycle monitoring and reference signal adjustment circuit has an input coupled to the output of the PWM controller and has an output coupled to the reference input of the amplifier.

公开(公告)号：US20240329101A1

公开(公告)日：2024-10-03

申请号：US18190963

申请日：2023-03-27

Applicant: Texas Instruments Incorporated

Inventor： Richeek Maitra ,  Ganapathi Shankar

IPC: G01R19/165 ,  G01R19/32

CPC classification number: G01R19/16571 ,  G01R19/16519 ,  G01R19/32

Abstract: An example circuit includes a transistor including a first current terminal, a second current terminal, and a control terminal, the first current terminal of the transistor coupled to a load terminal, the second current terminal of the transistor coupled to a ground; a sense transistor including a first current terminal, a second current terminal, and a control terminal, the second current terminal of the sense transistor coupled to the ground; an amplifier including a first input, a second input, and an output terminal, the second input of the amplifier coupled to the output terminal of the amplifier; and a resistor including a first terminal and a second terminal, the first terminal of the resistor coupled to the output terminal of the amplifier and the control terminal of the transistor, and the second terminal coupled to the control terminal of the sense transistor.

公开(公告)号：US20160268892A1

公开(公告)日：2016-09-15

申请号：US14642735

申请日：2015-03-09

Applicant: Texas Instruments Incorporated

Inventor： Vishal Gupta ,  Ganapathi Shankar

IPC: H02M3/07 ,  H03K17/687

CPC classification number: H02M3/07 ,  H02M2001/0029 ,  H02M2001/0048 ,  H03K17/04123 ,  H03K17/0822 ,  H03K2017/0806 ,  H03K2217/0009 ,  H03K2217/0054 ,  Y02B70/1491

Abstract: A fast blocking switch includes, for example, an energy storage device, a first power switch and a second power switch. The energy storage device stores a charge for fast activation of the switches. The first switch is operable for coupling input current to an output terminal in response to the coupling of a potential supplied by the stored charge to a control terminal of the first switch. The second switch is operable for coupling a limited amount of the input current to the output terminal in response to the coupling of a potential supplied by the stored charge to a control terminal of the second switch.

Abstract translation: 快速阻塞开关包括例如能量存储装置，第一电力开关和第二电力开关。 能量存储装置存储用于快速激活开关的电荷。 响应于由存储的电荷提供的电位与第一开关的控制端的耦合，第一开关可操作用于将输入电流耦合到输出端。 响应于由所存储的电荷提供的电位与第二开关的控制端的耦合，第二开关可操作用于将有限量的输入电流耦合到输出端。