I plan to use four EPC2012C to make a full-bridge inverter for driving a wireless power transmitting coil. The input DC voltage is up to 120 V. Can you recommend a GaN-friendly half bridge driver for these conditions.
Assuming you need high speed gate driving, one good choice is from TI. The LMG1210 is TI’s 200 V GaN gate driver that can take up to 300 V transients. The LMG1210 works up to 50 MHz under some conditions, so it should be fine at 6.78 MHz. It has programmable dead time, which is nice, or the dead time can be controlled externally. Another option to consider is the 650 V GaN gate driver, NCP51820, from ON Semi. Please view the ecosystem of GaN friendly controllers and drivers can. Also, please view the webinar Gate Drivers for GaN FETs