#385 IOPadIOVss and IOPadVss don't have strong `TopMetal2` connections. Issue created by smunaut If you look at the Vdd pads, they have very strong connection to the rings through TopMetal2. For instance here's

IOPadIOVdd

, you can see the direct connection on the bottom pad. [Image](https://private-user-images.githubusercontent.com/129013/420263521-333d11cb-858d-4cac-97f3-8e38b42b51db.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDE2MDg4OTIsIm5iZiI6MTc0MTYwODU5MiwicGF0aCI6Ii8xMjkwMTMvNDIwMjYzNTIxLTMzM2QxMWNiLTg1OGQtNGNhYy05N2YzLThlMzhiNDJiNTFkYi5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzEwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMxMFQxMjA5NTJaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1hYWFkOGU1NTI1MjRmNzMyODliMmMwYmJjMDFiZGVjYzk2N2JhZWNkNDdhNTgyYTFmMThlNWIwYzllODUxZjlkJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.zh5JmTaMyDdsLIfQJ2Ddzmx01HfNfwihOpaEdb8bY7A) But the top pad is a

IOPadIOVss

which should connect to the

IOVss

ring which is right next to it, but instead of having a strong connection through the thick

TopMetal2

, it goes all the way down to

Metal2

, through quite the via stack ... What I think it should be doing is something like: [Image](https://private-user-images.githubusercontent.com/129013/420264219-6cb4e666-3f9e-4481-8189-2aa8246ede5e.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDE2MDg4OTIsIm5iZiI6MTc0MTYwODU5MiwicGF0aCI6Ii8xMjkwMTMvNDIwMjY0MjE5LTZjYjRlNjY2LTNmOWUtNDQ4MS04MTg5LTJhYTgyNDZlZGU1ZS5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwMzEwJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDMxMFQxMjA5NTJaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1kOWU3YzBmMjJkODVkMTViNDBhM2Y3YjkyMmI0YzQyMTUwMzg1ZjIwMmY2ZmI4OWQwMjdjOTYwMjgwNWEzYmU3JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.mj9PDPGZD0-C53xSEVDlezmzcb1GBHtp7QeeifOppMY) (this is just an edited image, I haven't implemented it). Same issue is present for

IOPadVss

. The

IOPadVdd

has a strong connection cutting the through IO ring on

TopMetal2

to directly reach the

Vdd

ring, but the

Vss

one does not and again goes through a lot of via and down to a thin lower metal layer. IHP-GmbH/IHP-Open-PDK