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TPS92560 AC/DC

David Marquart
Prodigy 30 points
Other Parts Discussed in Thread: TPS92560

I would like to design a driver board for replacing halogen lights in some machines we have that either have 12vac or 24vdc magnetic transformers but also be able to run from 24vdc.  Can this be done with the TPS92560?  After using the calculator I do not see any place to change from AC to DC input voltage

Leds are (6) 3v fwd voltage, 18v total,  700ma fwd current.  .  In constant current sepic it appears I can use the same rsense and inductor with the switching frequency changing some but not out of the range I find acceptable.  

So would my main issue would be the ac/dc input and regulation before the chip (D1 and D2) or should I look into another option?