hi. Simple question that I can't seem to find an answer for. We all know the body diode in an NMOS only lets it block current in from drain to source when Vgs<Vt. If current tries to flow from source to drain in this state, the body diode will allow current to pass causing the diode voltage to appear across the MOSFET source-drain terminals.
My question is if this is occuring, and you suddenly apply Vgs across the MOSFET terminals, does it have no effect? ie. the voltage across drain-source is still the diode forward voltage. Or does it improve the NMOS's ability to pass current from source-drain beyond that of the body diode (ie.the NMOS behave like a resistor like if it was passing current from drain-source)?
THanks.
My question is if this is occuring, and you suddenly apply Vgs across the MOSFET terminals, does it have no effect? ie. the voltage across drain-source is still the diode forward voltage. Or does it improve the NMOS's ability to pass current from source-drain beyond that of the body diode (ie.the NMOS behave like a resistor like if it was passing current from drain-source)?
THanks.