公开(公告)号：US10447153B2

公开(公告)日：2019-10-15

申请号：US15495966

申请日：2017-04-24

Applicant: Texas Instruments Incorporated

Inventor： Nandakishore Raimar ,  Sayantan Gupta

IPC: H02M3/07 ,  H02M1/00

Abstract: A VBOOST generator includes, for example, a voltage regulator for generating a first power rail VX between the supply voltage VCC and ground. A clock generator is arranged to generate a clock signal oscillating between the supply voltage VCC and the voltage VCC−VX. A charge pump is arranged to couple the voltage VCC−VX to a first terminal of an on-substrate flyback capacitor during a first half-cycle of the first clock signal and is arranged to couple the voltage VCC to the first terminal of the flyback capacitor during a second half-cycle of the first clock signal. A pin is coupled to the substrate couples the voltage VCC+VX developed on a second terminal of the flyback capacitor during the second half-cycle of the first clock signal to an external bucket capacitor. A second charge pump is optionally included to increase the charging capacity of the VBOOST generator.

公开(公告)号：US20230378942A1

公开(公告)日：2023-11-23

申请号：US17749278

申请日：2022-05-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhishek Gupta ,  Sayantan Gupta

IPC: H03K3/3565

CPC classification number: H03K3/3565

Abstract: A circuit includes an inverter coupled between an input and an output. The inverter includes first and second pull-down transistors having control terminals coupled to the input, a pull-up resistor, and a pull-up transistor having a control terminal coupled to the input. The first and second pull-down transistors are coupled in series along a pull-down path extending between a first voltage supply terminal and the output. The pull-up resistor and pull-up transistor are coupled in series along a pull-up path extending between a second voltage supply terminal and the output. A hysteresis transistor has a control terminal coupled to the output. The hysteresis transistor is coupled to the inverter along a hysteresis path extending between the first voltage supply terminal and the pull-up path. A clamp circuit is coupled to the inverter along a clamp path extending between the first voltage supply terminal and the pull-down path.

公开(公告)号：US20180309362A1

公开(公告)日：2018-10-25

申请号：US15495966

申请日：2017-04-24

Applicant: Texas Instruments Incorporated

Inventor： Nandakishore Raimar ,  Sayantan Gupta

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M3/073 ,  H02M2001/0006 ,  H02M2003/075

Abstract: A VBOOST generator includes, for example, a voltage regulator for generating a first power rail VX between the supply voltage VCC and ground. A clock generator is arranged to generate a clock signal oscillating between the supply voltage VCC and the voltage VCC−VX. A charge pump is arranged to couple the voltage VCC−VX to a first terminal of an on-substrate flyback capacitor during a first half-cycle of the first clock signal and is arranged to couple the voltage VCC to the first terminal of the flyback capacitor during a second half-cycle of the first clock signal. A pin is coupled to the substrate couples the voltage VCC+VX developed on a second terminal of the flyback capacitor during the second half-cycle of the first clock signal to an external bucket capacitor. A second charge pump is optionally included to increase the charging capacity of the VBOOST generator.

公开(公告)号：US11418137B1

公开(公告)日：2022-08-16

申请号：US17235569

申请日：2021-04-20

Applicant: Texas Instruments Incorporated

Inventor： Sayantan Gupta ,  Sooping Saw

IPC: H02P6/28 ,  H02P7/29 ,  H02P21/22

Abstract: A motor driver includes a low-side drive transistor, a comparator, a sense transistor, first switch, and a second switch. The low-side drive transistor is adapted to be coupled to a motor. The comparator is configured to determine a direction of a drive current flowing in the low-side drive transistor. The sense transistor is coupled to the low-side side drive transistor and is configured to pass a replica of the drive current. The first switch is configured to couple the sense transistor to the low-side drive transistor responsive to the drive current flowing in a first direction through the low-side drive transistor. The second switch is configured to couple the sense transistor to a ground responsive to the drive current flowing in a second direction, that is opposite the first direction, through the low-side drive transistor.

公开(公告)号：US11923762B2

公开(公告)日：2024-03-05

申请号：US17538509

申请日：2021-11-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sachin Sethumadhavan ,  Sayantan Gupta

IPC: H02M1/14 ,  H02M3/158

CPC classification number: H02M1/14 ,  H02M3/158

Abstract: An example circuit includes a supply comparator having a supply input, a supply reference input and a supply comparator output. The supply input is coupled to a supply input terminal, and the supply reference input is configured to receive a supply reference voltage. A controller has a comparator input, a high-side output and a low-side output. The comparator input is coupled to the supply comparator output. A high-side switch having a control input. The high-side switch is coupled between the supply input and a switch output terminal, and the high-side output is coupled to the control input of the high-side switch. A low-side switch has a control input. The low-side switch is coupled between the switch output terminal and a ground terminal, and the low-side output is coupled to the control input of the low-side switch.

公开(公告)号：US11881859B2

公开(公告)日：2024-01-23

申请号：US17749278

申请日：2022-05-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhishek Gupta ,  Sayantan Gupta

IPC: H03K3/00 ,  H03K3/3565 ,  H03K3/2893

CPC classification number: H03K3/3565 ,  H03K3/2893

Abstract: A circuit includes an inverter coupled between an input and an output. The inverter includes first and second pull-down transistors having control terminals coupled to the input, a pull-up resistor, and a pull-up transistor having a control terminal coupled to the input. The first and second pull-down transistors are coupled in series along a pull-down path extending between a first voltage supply terminal and the output. The pull-up resistor and pull-up transistor are coupled in series along a pull-up path extending between a second voltage supply terminal and the output. A hysteresis transistor has a control terminal coupled to the output. The hysteresis transistor is coupled to the inverter along a hysteresis path extending between the first voltage supply terminal and the pull-up path. A clamp circuit is coupled to the inverter along a clamp path extending between the first voltage supply terminal and the pull-down path.