I am trying to simulate a simple inverter transfer function - DC voltage out & shoot through current vs. DC voltage in.
Using the n-mosfet and p-mosfet symbols provided with the pre-filled in device parameters.
Also tried other Spice Level 1 parameter sets to make sure the as-supplied devices
were not implementing something unphysical that causes convergence problems.
The result is that as I lower the voltage, I first get warnings about DC analysis failures
and fallback solver being deployed, then simulations hang at certain DC steps,
and at even lower voltages the simulations run but produce unphysical results:
the transfer characteristic starts looking like a staircase.
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