TPS65400-Q1: can you stack phases together for more Iout?

Hi Guys,

I know some bucks, you can stack two or more together to create a dual phase converter simply by tying the Comp pins together. could that be done with the TPS65400? 

Customer is asking for Q100 and PMBus, and this is our only device that has both in the entire portfolio. But they need more Iout.

Thanks,

Brian