aspirecole
Member level 1
is it enough to use 5V pwm to drive a mosfet for a big load?.. should i use a high amplitude pwm or what?.. my mosfet gate voltage is +-20V
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1.What MOSFET you are using?
2.Are you using H-Bridge to drive motor?
3.Where you have connected your load(DC motor) i.e high side or low side driving?
4.What is the load current requirement?
what about the supply voltage to the motor?
if you opt low side driving you can use discrete MOSFET driver using BC547(NPN),BC557(PNP) with few resistors;high side driving requires a driver IC such as IR2110(1 High & 1 LOW side driver)
im connecting 24V battery to the motor. the other wire to the drain of mosfet.. then applying pwm to the gate pin..is it low side drive or high side drive?
Its a low side drive because Source terminal of the MOSFET is directly connected to ground.
you can use the attached circuit diagram it would work for you
thanx soo much manany similar transistor should work