Hey Claire, I’ve seen plenty of designs, especially in audio power amps, where output MOSFETs are wired in parallel, and I’ve read in The Art of Electronics that that arrangement is acceptable because MOSFETs have a negative temperature coefficient, i.e. they pass less current the hotter they get, so if one MOSFET is shouldering more of the load than others, it will soon heat up and shoulder less of it. In other words, parallel MOSFETs balance themselves out automatically if they all dissipate heat the same way. In mejmia’s situation, if he can guarantee that both switches are either full on or full off at any given instant (i.e. the timing issue you identified is minimized), then wouldn’t this principle apply?
