a) a board does not "support" 3-phase power supply. I has it or not, you can see this at the number of mosfets. If you have 6, it's a 3 way power supply like the 7DXR, if you have 4, it's a 2 way power supply, like the 8K7A. Please read the above link for mor info.
b) the Palamino does not require a 3-phase power supply.
