I want to use
UCC21520DW
for a typical halfbridge application. Maximum Gate charge for my MOSFETs is 45nC. Max. Duty cycle is 95% and minimum is 5%. VCCI is 12 V, INA and INB is 3.3 V, for MOSFETs side i am using 12V 2W isolated dc dc converter. After calculation and considering in voltage ripple Bootstrap cap value come up with 800nF. i have decided to choose 1uF cap for this application.
Question: 1- will there be any kind of duty cycle limitation issue regarding bootstrapping for high side MOSFETs?
2- I have chosen 18 ohm turn on resistance and 9 ohm for turn off. is that fine?
MOSFETs Blocking voltage is 600v.
I can provide further information if needed.