Hello
I have problem with my power supply. I did design in WEBENCH® Designer. Schematic and PCB connection are in attached files. It is look like my power supply doesn't want start in desire voltage. Uin = 20V-28V Uout=18V. When I connected everything together my Uout =3.6V. When I connect my board to Uin=9V my power supply working but when change that value up is stops working. Can someone give me idea where I should looking. I removed additional elements from my board: C1,C4, C3 (original design) and still don't have positive result.