公开(公告)号：US10574226B2

公开(公告)日：2020-02-25

申请号：US15896952

申请日：2018-02-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Navaneeth Kumar Narayanasamy ,  Salil Chellappan ,  Apoorva Awasthy

IPC: H03K17/0812 ,  H03K17/0814 ,  H02H3/08 ,  H02H7/20

Abstract: In some examples, a gate driver includes a gate sense pin and a gate sense circuit configured to couple to a node of a transistor via the gate sense pin. The gate sense circuit includes an overcurrent detection circuit configured to detect a first fault condition based on the node before the transistor turns on in a soft switching mode. The gate sense circuit also includes a Miller plateau detection circuit configured to detect a second fault condition based on the node when the transistor is turning on in a hard switching mode.