Speedfit Design simulator (sixpack module)

mavern1

Hi

We are simulating "3-Phase Interleaved Buck-Boost Converter (Buck Mode)"

The part chosen for this design is CCB021M12FM3, 30A per leg phase current module. So by design we can go upto 36000W total power (400V x 30A x 3 ). SW freq is very low for sim @ 20Khz.

However when we try simulating we can do only up to 19000W , if we go higher say 20000W as shown below the tool is requesting for two devices in parallel as apposed to a single part ?

Is this a simulation limitation that is getting kicked in here or some device specific ?