An Improved Common-Mode Transient Immunity Isolated Gate Driver With On-the-Fly Deadtime Control

This paper proposes an isolated gate driver that incorporates an enhanced common-mode transient immunity (CMTI) technique to effectively suppress common-mode transient (CMT) noise. Additionally, the approach leverages the CMT noise to enable on-the-fly deadtime (DT) control at the transmitter. Experimental results demonstrate the DT jitter compensation circuit reduces high-frequency carrier (500 MHz) jitter by 10.6%, the efficiency is improved by 11.5%, and the CMTI is improved from 184 kV/μs to 208 kV/μs.