公开(公告)号：US20200235571A1

公开(公告)日：2020-07-23

申请号：US16558867

申请日：2019-09-03

Applicant: Texas Instruments Incorporated

Inventor： Ann Margaret Concannon ,  Vishwanath Joshi ,  Antonio Gallerano ,  Zhao Gao ,  Yanqing Li

IPC: H02H9/04 ,  H03H11/02

Abstract: A protection circuit for a signal processor, a method of operating the protection circuit, and a method of forming the protection circuit. In one example, the protection circuit is couplable to a signal port and a first power bus for the signal processor. The protection circuit includes a first diode string couplable across the signal port and the first power bus. The first diode string includes a first diode and a second diode coupled in series in a same polarity sense. The protection circuit also includes a third diode coupled in parallel with one of the first diode and the second diode in an opposite polarity sense.

公开(公告)号：US11296680B2

公开(公告)日：2022-04-05

申请号：US17180335

申请日：2021-02-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Keliu Shu ,  Yanqing Li

IPC: H03K17/22 ,  H03L7/00 ,  H03K3/011 ,  H03K17/687 ,  H03K5/24

Abstract: Methods, apparatus, and systems are disclosed for voltage supervisors. An example apparatus includes a first switch having a first source, a first drain, and a first gate, a first resistor having a first terminal and a second terminal, the first terminal coupled to the first source and second terminal coupled to the first drain, a second resistor having a third terminal and a fourth terminal, the third terminal coupled to the second terminal, a third resistor having a fifth terminal and a sixth terminal, the fifth terminal coupled to the fourth terminal, a fourth resistor having a seventh terminal and an eighth terminal, the seventh terminal coupled to the sixth terminal, a second switch having a second source, a second drain, and a second gate, the second source coupled to the seventh terminal, and a comparator having an output, the output coupled to the first gate and the second gate.

公开(公告)号：US11271392B2

公开(公告)日：2022-03-08

申请号：US16558867

申请日：2019-09-03

Applicant: Texas Instruments Incorporated

Inventor： Ann Margaret Concannon ,  Vishwanath Joshi ,  Antonio Gallerano ,  Zhao Gao ,  Yanqing Li

IPC: H02H9/04 ,  H03H11/02

Abstract: A protection circuit for a signal processor, a method of operating the protection circuit, and a method of forming the protection circuit. In one example, the protection circuit is couplable to a signal port and a first power bus for the signal processor. The protection circuit includes a first diode string couplable across the signal port and the first power bus. The first diode string includes a first diode and a second diode coupled in series in a same polarity sense. The protection circuit also includes a third diode coupled in parallel with one of the first diode and the second diode in an opposite polarity sense.

公开(公告)号：US20210265983A1

公开(公告)日：2021-08-26

申请号：US17180335

申请日：2021-02-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Keliu Shu ,  Yanqing Li

IPC: H03K3/011 ,  H03K5/24 ,  H03K17/687

Abstract: Methods, apparatus, and systems are disclosed for voltage supervisors. An example apparatus includes a first switch having a first source, a first drain, and a first gate, a first resistor having a first terminal and a second terminal, the first terminal coupled to the first source and second terminal coupled to the first drain, a second resistor having a third terminal and a fourth terminal, the third terminal coupled to the second terminal, a third resistor having a fifth terminal and a sixth terminal, the fifth terminal coupled to the fourth terminal, a fourth resistor having a seventh terminal and an eighth terminal, the seventh terminal coupled to the sixth terminal, a second switch having a second source, a second drain, and a second gate, the second source coupled to the seventh terminal, and a comparator having an output, the output coupled to the first gate and the second gate.

公开(公告)号：US10819234B2

公开(公告)日：2020-10-27

申请号：US16428588

申请日：2019-05-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariel Dario Moctezuma ,  Hasibur Rahman ,  William Krenik ,  Yanqing Li

IPC: H02M3/158 ,  H01L29/78 ,  H02M1/088 ,  H02M1/00

Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.