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AR# 59456

2015.2 Vivado Power - What is the deviation between dynamic power analysis and the actual production silicon measurements?

Description

What is the deviation between dynamic power analysis and the actual production silicon measurements?

Solution

The XPE dynamic analysis average error deviation is +/- 20% with accurate toggle rates, thermal data, and utilization data.

This error is due to lack of packing, placement, and routing information for the design, and process variation.


The transceiver dynamic power analysis average error deviation is +/- 15%.

To get more accurate dynamic power estimation for transceivers, review (Xilinx Answer 61292).


The Vectorless Report_Power dynamic analysis average error deviation is +/- 15% with accurate toggle rates and static probability (set_switching_activity).

This error is due to the lack of accurate toggle rate information for the design elements or components and process variation.


The transceiver dynamic power analysis average error deviation is +/- 10%, based upon various components in (Xilinx Answer 61290).

To get more accurate dynamic power estimation for transceivers, review (Xilinx Answer 61292).


The vector (SAIF) Report_power dynamic analysis average error deviations is +/- 10% with accurate timing simulation, and a 100% match rate between SAIF and the design.

This error is due to the process variation.


The transceiver dynamic power analysis average error deviation is +/- 10%, based upon various components in (Xilinx Answer 61290).

To get more accurate dynamic power estimation for transceivers, review (Xilinx Answer 61292).

AR# 59456
Date Created 02/18/2014
Last Updated 08/07/2015
Status Active
Type General Article
Tools
  • Vivado Design Suite - 2013.4