A Level Shifter With Almost Full Immunity to Positive dv/dt for Buck Converters

Power management integrated circuit in audio and low power applications

“…The voltage at switching node VX will then be a replica of the input PWM signal. Using high-side NMOS power transistor in the output stage is more desirable than a PMOS power transistor because for the same driving capability (indicated by the on resistance of the power transistor), NMOS can be designed with much smaller size [50].…”