I'm going to use a Full Bridge Inverter for my application.
The problem is that the current which flows through the MOSFETs when they are ON can reach 70A RMS and the power dissipation is too high. In fact using a IPW65R019C7 MOSFET (home page, datasheet) one obtains:
Pd = Rdson*Ieff^2 = 0.019*50^2 = 47.5 W
I would like to reduce this power loss by using two MOSFETs in parallel. In this way the current is divided by 2 and one obtains:
Pd = Rdson*Ieff^2 = 0.019*25^2 = 11.8 W
The question is: Are these calculations correct? Do you know the rules and precautions to ensure that the current flows half in one MOSFET and half in the other one?