I'm working on a 3 Phase brushless sensorless driver ( Allegro A4960 ) I need to drive different motor in term of power. The voltage is 24V but the current per phase varies from 1A to 6A. So I'm looking for an N-Mosfet suitable for this current. The A4960 evaluation board uses the IRFR2405PBF but I was wondering if the CSD18533Q5A could be better. I'm not an expert on mosfet and motor driver. My valutation is based on IDrain and Rdson. Are these 2 variables sufficient or am I missing something else? Could I not consider the fswitching on the mosfet to calculate the dissipated power?In this case I will choice the CSD18533Q5A because of the lower Rdson.
Thanks in advance