Inductor for MOSFET protection
If a MOSFET drives a voltage into a short circuit or a circuit with an impedance that is too low it will exceed its ratings and become damaged. If a small value inductor is placed in series with the MOSFET, it will not cause a rapid short circuit but a ramping-up of current. This is due to the formula for an inductor: -

$$V = L\dfrac{di}{dt}$$

That ramp-up of current is proportional to voltage AND, if that current ramp is monitored (via a small series resistor), it can be quickly ascertained that either the incoming supply voltage or the load are beyond acceptable limits before the current reaches a damaging level to the MOSFET.