I have an rc aircraft application where I need to run a relatively small brushed motor, on 1s Lipo voltage, for maybe 20-30 seconds max, and then it will be shut down. This cycle will be repeated at the beginning of each flight. Each flight is roughly 6-8 minutes total so the duty cycle of the motor is very low. I know from measurements that during the time the motor is running it is drawing approximately 4.5A.
I have some 2802 (RC Switch with Small Low-Side MOSFET) on hand and they are rated at roughly 3A max. I know that using a single one in the above application didn’t burn it up after one cycle but it is clearly using it outside the specs. Is it feasible to use two of them in parallel for this specific application and have reasonable confidence that they won’t routinely fail? I know there is an RC switch available with a medium low-side MOSFET that will handle up to 15A, but I happen to already have the small ones on hand.
Thanks for any feed back. I can order a medium switch but, if it’s feasible to use two small ones in parallel that is a more immediate solution.