IR Drop Features
Power Maps
Including 5 component:1. internal power: , 2. switching power: , 3. toggle rate scaled power: , 4. all: , 5. time-decomposed power: . They are generated with power report and timing window report from Innovus.
(1) Power report contains instance level power and toggles rate from a vectorless power analysis.
- Internal power ()
- Switching power ()
- Leakage power ()
- Toggles rate ()
Then these instance level power is merged into corresponding tile to form power maps.
(2) Timing window report contains possible switching time domain of the instance in a clock period from a static timing analysis for each pin. The clock period is decomposed evenly into 20 parts, and the cell contributes to power map only in the parts that it is switching.
![power_sca](../pics/power.png)
IR Drop Map
IR drop value on each node from a vectorless power rail analysis is merged into corresponding tile to form IR drop maps.
![](../pics/ir.png)