PIC 18F47Q10 Digital Output?

[seokgi]

Hello?
I have a question.
I am using PIC18F47Q10.
I am trying to drive a FET (IRFZ34NSTRLPBF) through a 4.7K ohm resistor to PortB3. Digital Out is not output. However, the PWM output works fine.

What is the problem?

Thank you.

[S_V]

Could you please share the schematic, and the VDD of PIC18F47Q10



To switch on IRFZ34, the gate to source voltage (Vgs) must be at least 10V


- S_V

[seokgi]

Thanks for your advice.

Share the schematic. As I advised, I knew there were some things I didn't know. I have no experience with FET.

So, I want to use the FET Gate driver. Gate Driver wants to use ZXGD3001E6. The power supply voltage is 12V and the control voltage is 3.3V. However, the Vin voltage is 12V. We need to fix this. I saw that some resistance must be entered to drive the ZXGD3001E6. How should resistance values be determined?

Could you suggest something else?

Thank you.

[S_V]

Here the microcontroller’s VDD is 3.3V, so maximum Mosfet Gate voltage (Vgs) will be < 3.3V, which is not sufficient to turn-on IRFZ34 fully. ( to turn-on IRFZ34 Vgs must be > 10V)

You may try any "Logic level gate Mosfets" like "NTP60N06L" from ONSEMI. Any Gate voltage above 2.5V will turn-on these Mosfets.