ADUM3123 Fsw maximum question?

i see datasheet, the fsw maximum is 1MHz?   if we need to work to 6.78MHz, that is ok?

currently i need a gate drive for drive wolfspeed "C3M0065090D" (Vgs-on=15V, Vgs-off=0V), our application is "wireless charger" and topology is "class-EF".

so i only use 1pcs SiC MOSFET on low side, so i don't isolation of gate drive, but it need switching frequency to 6.78MHz.

ADUM3123 is ok?   or you have suggest MOSFET driver for it?