Monolithic FET-Controlled GaN Driver with Pre-Boosting and Robust Dead Time Control for DToF LiDAR Application

Abstract

For monolithic GaN LiDAR driver, in order to achieve high speed narrow pulse and low power consumption, pre-boosting and robust dead time (PBRD) control is proposed to enhance pull-up capability and limit short-through current during transient. A non-BGR under-voltage lockout (UVLO) is also provided for preventing the driver from operating in the event of supply voltage failure. Experimental results show that the proposed driver achieves peak load current of 10A and 2ns pulse width at the operation frequency of 20MHz. The fall and rise time of output pulse are 310ps and 334ps, respectively, and measured dynamic power is 80mW at the operation frequency of 10MHz.