Power Ground Grid Insertion

Power Ground Grid Insertion

• The step of power-ground grid insertion is also known as stripegen. There are mainly four things we do during the stripegen step:
  • Add Ring
  • Add Stripe
  • Create special route
  • Add VIAs

 

• PG ring and stripes connection is made as per power and ground requirement.

 

• Stripes with different pitch, width, offset and layer are inserted in defined power domains.

 

• Define the global power and ground nets and create the power structure that corresponds to the global nets.

 

• Special route happens on M0 or M1 followed by end of rows.

 

• After the stripes insertion, VIAs are dropped to connect to lower metal layers.