Process Corners - 2021.2 English

Vivado Design Suite User Guide: Power Analysis and Optimization (UG907)

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2021.2 English

When devices are fabricated, each device has variations of performance and power consumption, due to the manufacturing process. Report Power offers static power estimation for two process corners, typical and maximum. Ideally all devices should meet the typical estimation value. But process variations result in a distribution of devices, which needs to be centered on the typical value, adjusted manually based on process variation for any particular device. A maximum setting, however, guarantees that the reported numbers are within operating range and closer to hardware measurements. At a fixed Junction Temperature, the expected variation in static power from typical to maximum would be ~2.5X on Commercial devices.

Important: Use the maximum Process setting to achieve worst-case static power accuracy.

In Vivado® , the default Process is typical in Report Power. This can be changed to maximum in the Environment tab of the Report Power dialog box:

Figure 1. Setting the Process for Report Power
Equivalent Tcl command:
set_operating_conditions -process maximum