DER-50, 30W Multiple Output Power Supply using TOP245R

DER-50, Reference Design shows 30W power supply prototype design using a TOP245R. The supply delivers 34W peak.AC input power is rectified and filtered by D4, D5, D9, D10 and C23 to provide high voltage DC bus, Which is applied to the primary of transformer T1.TOP245R DRAIN pin drives the other side of the transformer primary