What are the advantages and disadvantages to driving a power MOSFET with a Vgs significantly higher than the threshold? Most 600V ~40A MOSFET I'm looking at have graphs with Vgs up to about 10V. The optocoupler gate driver I'm thinking of using indicates 24V as the high-side (half bridge motor drive) gate voltage in several app notes. The max Vgs is spec'd at +/- 30V in the MOSFET datasheets.