The diode block has the following explanation in its Help file:
So, according this explanation, the series voltage source is:
V = Vf * (1 − Ron*Goff)
V = Vf − Vf*Ron*Goff
V = Vf − (Vf*Goff)*Ron
V = Vf − (Ioff)*Ron
I don't remember seeing this second voltage component (Vf*Ron*Goff) anywhere else.
And, altough it is said that this second term is to ensure zero current when zero voltage is applied across the diode, I could not understand and draw an equivalent electrical circuit that shows this afirmative in a clear and easy way.
Can anyone help me understand this (Vf*Ron*Goff) voltage component?