I am referring to Application Report SLUA669A.
I have a three phase inverter using a setup similar to the application note. The PWM inputs go through a ISO7710f isolator and then power MOSFET's through a UCC27533 driver, unlike figure 3 I am using an isolated supply to power the driver and isolator like in figure 4. I want to make sure that this setup is valid, I see in figure 3, that there is a resistor on the VDD line of each isolator, is there a purpose to this resistor, will not having it cause reliability concerns? Are there any specific recommendations for this setup in regards to driving SiC MOSFET's, for example which setup is best suited or will any problems arise from these figures?