List of IP's and power calculation tools using OSU180 are open-sourced till GDS on GitHub in below link I think Bandgap and 10-bit DAC can easily be ported to Sky130 https://www.vlsisystemdesign.com/ip/ I will try out the pdk's and keep everyone posted on how it goes Thanks @User for all your help with the interns. They figured out PNP thing from connect section. We will be sending details over email to you