Electronics > Beginners
P Channel Mosfet
j_car:
Hi, I want to know how to get a P Channel Mosfet to operate with 0-48v supplied by a PWM speed controller and to be turned on/off with a unipolar Hall Effect Switch. Please reply in very simple terms as I have NO electronic knowledge. Thanks John.
madires:
Could you please elaborate on what you are trying to accomplish? Which components do you have already?
j_car:
I am trying to make an H bridge. The N channel side works with the speed controller and Hall Switch but I Can't get the P channel to work, it gets hot and reduces the power going through it.
Prithul0218:
--- Quote from: j_car on October 02, 2018, 02:34:50 pm ---I am trying to make an H bridge. The N channel side works with the speed controller and Hall Switch but I Can't get the P channel to work, it gets hot and reduces the power going through it.
--- End quote ---
You are probably not turning "on" the MOSFET properly. That's why it's resistance is high and so it's heating up. Check the datasheet of your MOSFET and check the required Vgs or gate to source voltage in order to turn on the MOSFET fully to achieve lowest resistance.
Or if you're trying to control the speed of the motor using PWM, then you are probably not turning the MOSFET on and off fast enough.
j_car:
Yes, that was my conclusion. But I don't know how to get it to fully turn on with the variable power of the speed controller(0-48v) going through it. Without the speed controller with just 12v it works fine, doesn't hot. I would like to get the mosfet to work with the speed controller and then I will look at turning it on/off with the Hall Switch later. The mosfet is a IRF9Z34NPBF.
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