IR Drop problem in Design

[alam4vlsi]

Hi,

In my design the worst IR Drop(135 mv DVD) is under always on metal strap... How can i reduce the IR Drop? Please help

 

[artmalik]

a) Add more decaps
b) Spacing out the high current consuming current gates/blocks and staggering their activity so they dont consume a lot of curren.
c) Making the power network better with more vias, and wider straps and more often power straps.

 

[rca]

To complete the point c, you could connect the metal filling to power nets, that will also reduce the resistivity.