Hi all ,
I am using UCC28810 as my buck flyback controller and i found an application note PMP2698 which is a 50 watt LED Driver , I made a PCB for it and it is work fine but there is a noisy sound from the flyback transformer (which i made it look like G084231LF which it is mentioned in the appliaction note) so i think problem that the switching frequency of my transformer is not correct , So i am asking what is operating switching of the UCC28810 and how i can change it ?
Thanks in advance