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.

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