Dynamic IR Drop at the Chip Centre

• Identify high-toggle cells - clock nets toggle at 200 percent, and signal-net activity is taken from VCD, TCF or SAIF data.
• More clock cells being clustered together in that region drives the local dynamic IR drop.

KEY Dynamic IR drop appears mid-chip because high-toggle clock cells are clustered there.

Reducing Dynamic Power

• Reduce the power-supply voltage.
• Reduce the voltage swing at all nodes.
• Reduce the switching probability (activity/transition factor).
• Reduce the load capacitance.

KEY Cut dynamic power by lowering voltage, swing, switching activity and load capacitance.