By way of disclaimer, I do not know a whole lot about MOSFETs, so there is a good likelihood for errors in my question.
I am debugging a PCB where a voltage line is too high and I am trying to identify the faulty component. I have replaced the voltage regulator that regulates this 1.8V line twice, but the line still is measuring ~2.4V (on multiple meters) so I don't think the voltage regulator is at fault.
This 1.8V line is used as the gate for multiple MOSFETs throughout the PCB. I have been doing a lot of research and have read some things about the relationship between the drain and gate of MOSFETs. Namely, that the drain-source current increases as the gate voltage increases, and that Vds = Vg - Vt (where Vt is the threshold voltage).
So, are the inverses of these statements true? If the drain-source current was being increased by some other component, would that cause Vg (my faulty 1.8V line) to increase? If Vds is somehow increased, would that cause Vg to increase or Vt to decrease?
Thanks for the help. I will do my best to clarify if need be.