vdmos: in case temp and dtemp is given - use dtemp and neglect temp
prevent uninitialized warning
correct dT derivatives and add dVth_dT
Revert "Remove instance parameter temp. To specify offset to ambient temperature use dtemp instead."
Revert "correct and simplify temp derivatives"
correct and simplify temp derivatives
Inconsistent behavior in VDMOS thermal model
A fix is provided in pre-master-46. Please use dtemp instance parameter to apply an offset to ambient temperature.