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Newbie jms
Newbie
375 Views
Registered: ‎01-04-2019

Ultra scale plus power

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We are re-designing a board and repalcing a XCKU5P-3FFVB676E with a XCKU11P-3FFVE1517E. Both designs will perfom the same functions but the newer one will have a few more low speed gerneral purpose IO's added. Will the only difference in power consumption be what is shown in Table 7 of DS922?

Regards,

Jim

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Xilinx Employee
Xilinx Employee
350 Views
Registered: ‎05-13-2008

Re: Ultra scale plus power

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You need to use XPE to understand power dissipation.  The data sheet cannot help with understanding totla device power requirements.  My suggestion based on your description is:

1. Download the lastest US+ XPE from http://www.xilinx.com/power

2. Open the last checkpoint for the completed KU5P design in Vivado.  Run report_power producing a .xpe file.

3.  Import that .xpe file into US+ XPE.

4. Change the device to your new target, XCKU11P-3FFVE1517E.  Ensure that process is et to Max and temperature is set to highest expected operating junction temperature

5. Add any additional circuitry, I/O or other changes you expect for this new revision.

6. Double check the entire XPE for accuracy.

7. Analyze total power to understand if thermal design is adequate.  Look at per rail current to ensure board regulators can deliver adequate power per rail.

 

Hope that helps.

 

Thanks,

 

--  Brian

3 Replies
Xilinx Employee
Xilinx Employee
351 Views
Registered: ‎05-13-2008

Re: Ultra scale plus power

Jump to solution

You need to use XPE to understand power dissipation.  The data sheet cannot help with understanding totla device power requirements.  My suggestion based on your description is:

1. Download the lastest US+ XPE from http://www.xilinx.com/power

2. Open the last checkpoint for the completed KU5P design in Vivado.  Run report_power producing a .xpe file.

3.  Import that .xpe file into US+ XPE.

4. Change the device to your new target, XCKU11P-3FFVE1517E.  Ensure that process is et to Max and temperature is set to highest expected operating junction temperature

5. Add any additional circuitry, I/O or other changes you expect for this new revision.

6. Double check the entire XPE for accuracy.

7. Analyze total power to understand if thermal design is adequate.  Look at per rail current to ensure board regulators can deliver adequate power per rail.

 

Hope that helps.

 

Thanks,

 

--  Brian

Newbie jms
Newbie
316 Views
Registered: ‎01-04-2019

Re: Ultra scale plus power

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This answered my question. Thanks!

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Community Manager
Community Manager
296 Views
Registered: ‎07-23-2015

Re: Ultra scale plus power

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@jms To add to Brian's reply, listing documentation that an help in case you need a bit of help using XPE or Report_Power in Vivado

XPE:

http://www.xilinx.com/video/hardware/using-the-xilinx-power-estimator.html

http://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_3/ug440-xilinx-power-estimator.pdf

Vivado Report Power:

http://www.xilinx.com/video/hardware/power-estimation-analysis-using-vivado.html

http://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_3/ug907-vivado-power-analysis-optimization.pdf

http://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_3/ug997-vivado-power-analysis-optimization-tutorial.pdf

- Giri

- Giri
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