fungus:
luxy:
fungus:
The faster you can do this, the cooler the MOSFET will run.Intresting.. I was pretty sure that higher frequency of switching cause hotter MOSFET
"More frequent" switching isn't the same as "faster" switching.
Your both correct but talking of two different things. The faster one can drive (charge or discharge) the gate capacitance the less time the device will take to switch from full on to full off or visa versa. However the faster the PWM frequency is being used the lomger the time the device will be in switching transition per unit of time, so the higher the pwm frequency the higher the device dissipation will be, compared to lower PWM frequency.
Lefty