公开(公告)号：US20220399884A1

公开(公告)日：2022-12-15

申请号：US17348521

申请日：2021-06-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Cetin KAYA ,  Nathan Richard SCHEMM ,  Yong XIE

IPC: H03K17/082 ,  G01R1/20 ,  G05F1/46 ,  H03K5/24 ,  G01R19/165 ,  G01K7/02

Abstract: A short circuit detection circuit includes a current terminal, a sense resistor, an amplifier, and a resistor-capacitor ladder. The sense resistor is coupled to the current terminal, and is configured to develop a sense voltage proportional to a current through the current terminal. The amplifier is coupled to the sense resistor, and is configured to generate a scaled current proportional to the sense voltage. The resistor-capacitor ladder is coupled to the amplifier, and is configured to generate a measurement voltage that represents a surface temperature rise due to the current through the current terminal.