Hi, I've been wanting to drive a mosfet with a PWM signal (irfz44n) but cant take it to it maximum potencial due to mi arduino only delivering 4.2 volts to the gate and not letting all current flow through.
I dont know if voltage in PWM signals can be boosted, can anyone help me?
My load are 20 leds, powered from a different source and grounds connected together.
I dont know if voltage in PWM signals can be boosted,
Yes it can with a FET but you will need a logic level FET, the one you tried is not a logic level one, it needs 10V to fully turn it on.
Like this one:- N-Channel MOSFET 60V 30A - COM-10213 - SparkFun Electronics
Can it be done with an Op amp? Or it is not fast enough?
MOSFET is the right way, you need the right MOSFET, that's all.
Okay, thak you very much, both of you
"powered from a different source"
How many volts?
I ask because if it's enough, say "10V" or so, you could make a simple gate "driver" with an NPN and a couple of resistors.