公开(公告)号：US20220085804A1

公开(公告)日：2022-03-17

申请号：US17536058

申请日：2021-11-28

Applicant: Turntide Technologies Inc.

Inventor： Alejandro Pozo Arribas ,  Mahesh Krishnamurthy

IPC: H03K17/60 ,  H01L29/10 ,  H01L29/08 ,  H01L29/16 ,  H03K17/06 ,  H03K17/14 ,  H03F3/217

Abstract: A gate driver circuit comprises a sensor, an amplifier, a regulator, and a gate driver. The sensor is configured to sense a collector-emitter voltage and includes a first resistor and a second resistor connected in series, a high voltage diode connected between the series connected first and second resistors and a first capacitor connected parallel to the second resistor. The amplifier is configured to amplify a sensor output voltage and includes a non-inverting operational amplifier controlled by means of a plurality of resistors, a voltage follower connected to an output terminal of the non-inverting operational amplifier through a first diode and a third resistor connected across the first diode and the voltage follower. The regulator is configured to regulate a regulator output voltage based on an amplifier voltage. The gate driver is configured to connect/disconnect the regulator output voltage to the base terminal of the BJT.