公开(公告)号：US11411387B2

公开(公告)日：2022-08-09

申请号：US16658311

申请日：2019-10-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mayank Jain ,  Preetam Tadeparthy ,  Rohit Narula ,  Shobhit Singhal

IPC: H02H3/00 ,  H02H3/20 ,  G06F1/30 ,  H02H1/00 ,  H03M1/66

Abstract: An over/under voltage protection circuit includes a voltage input terminal, a digital-to analog converter, a comparator, and a control circuit. The comparator includes a first input coupled to an output of the digital-to-analog converter, and a second input coupled to the voltage input terminal. The control circuit includes an output coupled to an input of the digital-to-analog converter, and an input coupled to an output of the comparator. The control circuit is configured to set the digital-to-analog converter to generate an overvoltage fault threshold responsive to the output of the comparator indicating that voltage of a signal at the voltage input terminal exceeds a threshold currently generated by the digital-to-analog converter.