Hi again Thiago,
This configuration is OK for the UCC25800. Please have a look at the following Reference Design: PMP40980
Multiple-output isolated SiC driver bias-supply reference design for onboard charger applications
Thank you for reaching out.
Since each output is 1A, is the total power of the system 15.2W? If so, I would recommend the UCC28C59 in a flyback with multiple outputs. This product also has many variations (such as an automotive equivalent…