TPS62873-Q1: way to simulate the TPS62873 regulator in parallel operation?

Tool/software:

Hi

I am planning on using the TPS62873 with two in parallel because i have 15A+ to my Jacinto processor.

Normally I like to simulate my power regulators in LTSpice, but I can't do that since Ti only has encrypted models.

So, i guess I have to use Webench, fine. But, i can't figure out how to put two in parallel in Webench, it only seems to let me simulate one at a time. 

Is there a trick to parallel simulation in Webench, or in LTSPice that you know of?

Thanks