Customer is using UCC28704 on their design. When they test the load transient performance. They found some strange phenomenon on the VDD current.
when adding 0.1ms and >0.8A load, the I_VDD current becomes higher even though the switching frequency is pretty low. While when adding 0.1ms and <0.8A load, there is no such current can be seen. Could you share your comment on why there's current difference here?
0 to high current load transient @264Vac