Ubergeek63
Well-Known Member
The diode is a parasitic, it is ALWAYS there. Newer FETs have them optimized as switching or zener diodes, in the case of avalanche rated FETs, and are specified as such.Hi!
The extract you've posted has the free-wheeling diode characteristics.
I believe the free-wheeling diode is put inside the chip along with the MOSFET to protect it when switching (dI/dt).
But from my testing results, it looks like its not this free-wheeling diode that conducts the reverse current but the MOSFET itself.
If the diode is conducting, then why the dropout voltage is different whether the MOSFET is ON or OFF?