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How to choose Mosfet resistor values for biasing and gate protection?
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David Hess:
I have occasionally had to split the gate resistor in two with half at the gate and half at the driver not to protect the driver from physical damage but to limit di/dt when driving the capacitance of a long line which otherwise caused excessive ground and/or supply bounce.  Few applications are this sensitive.

A high value pull-up resistor at the gate makes sure that the gate is held in a known state and the MOSFET is off if the gate driver becomes disconnected.  A low value of pull-up resistor is used with an open collector or open drain driver when higher speed is required.

I can think of a couple ways to protect the driver from a worst case power transistor short but none are as economical as just replacing the driver.  A power transistor short is a complete failure anyway so it is not like reliability would be improved.  The extra parts would actually reduce reliability, increase cost, and decrease performance.
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