pin VDDA with the Isolated supply Primary at 5V supplying its common pin VDD1.
The secondary (Isolated) output supply could be 3V3 or 5V or even 12V in our
applications. - CLARIFICATION:- We want to have a 3.3V digital Interface on the
non-isolated interface (A) but use a 5V power supply to provide the power for
the secondary (Isolated) supply driver (X1-X2).
Is this allowed? Please advise us of any precautions or dangers.
I can confirm that your application with VDDA = 3.3V , and VDD1 = 5V will work.