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AR# 13775

8.1i XPower Web Power Tool - The quiescent power values are different from information in the data sheets

Description

The values quoted by XPower or the XPower Estimator (Web Power Estimator or Spreadsheet) for a design with no stimulus are not equal to the values quoted for quiescent supply current in the data sheets.

Solution

The values in the data sheets are for an empty FPGA with no I/Os and no termination (DCI or otherwise). XPower and the XPower Estimator provide an estimate of typical power for a design in a quiescent (no I/O or internal logic toggling) state. This power might include any constant current required for internal circuitry such as DCMs or some I/O drivers.

AR# 13775
Date Created 08/29/2007
Last Updated 12/15/2012
Status Active
Type General Article