TPS56221: Inverting Buck-Boost for split-rail output

Part Number:TPS56221

TI,

I had been exploring the forum for new components I'd like to try out soon, and I was looking at putting together a simulation for the TPS56221 in an Inverting Buck-Boost topology. Similar to this Application note for the TPS6215x  http://www.ti.com/lit/an/slva469c/slva469c.pdf . I'd like to have a solution with a transformer or coupled inductor topology if possible. Is there any reason that this cannot be done with the TPS56221? Any specific 'gotchas' or things I should look out for when trying to design in this way?

Do you have a TI-TINA simulation that already implements this topology for this device or similar?

Thanks.