We have an application for a military power supply. The input is 115 Volts, 400 Hz, four wire, three phase Wye connected. The output is a single DC voltage, not yet determined, that will be routed to separate DC to DC converters downstream. The DC bus power load is less than 350 W. The end application has a L-C EMI filter before the PS input that attenuates the large 400 Hz harmonics from the legacy power supply, and that will be retained.
I'd like to find a reference design to use as a starting point. The end application does not require low PF, but a PFC circuit may be appropriate because it will reduce conducted emissions. Isolation is required, but I am not sure if it will be done at the AC-DC converter or at the DC-DC converters. Current draw from each AC input phase should be approximately equal. The IC's should be rated to -40 to +100C operating.
Let me know if there are reference designs as I should look at as a (very early) starting point. Thanks, Gerard
