For things to extract correctly does the deep nwell layer ne

Question

For things to extract correctly does the deep nwell layer need to be in the same module as the well layer Or is this a bug or something

Tim Edwards · Answer

This is a known bug and one that I really wanted to get fixed before MPW two but my implementation had a few outstanding issues and I have not had the time to track them down For now flattening is really the only way to get it to work properly and even then it will have issues if you have multiple isolated pwells

Weston Braun · Answer

Ok I did not know about the flattening part I can do that is it a per module or the whole design needs to be flattened

Weston Braun · Answer

I am only using deep nwell to isolate the nmos in the power stage so my design only has one isolated pwell potential

Weston Braun · Answer

and even then the isolated pwells still get tied to the substrate in the hierarchy