do you need isolation between input supply and the outputs?
looks like you want a 300W SMP (bit of de-rating added)
if yo do then its a offline reg chip, or a offline reg controller,
input filters, bridge reg, high voltage smoothing cap, FET TR switch
isolating transformer (PULSE TYPE), opto isolater for feed-back
low voltage drop pulse diode, low esr caps. op filter chokes.
ect....
With low secondary winding losses a forward converter can regulate well on the primary output and cros-load regulation of output 2 unregulated is very good.