VC707 FPGA power measurement

luisengelmotejero · ‎05-22-2018

Hi everyone,

I am working with the VC707 evaluation kit. I need to measure the power consumption of the Virtex-7 XC7VX485T FPGA (VCC_INT only) using different designs. For that purpose, I intend to use the Digital PWM Controller from TI UCD9248 (U25 in the schematics). From what I see in the VC707 schematics, the power consumption of the VCC_INT can be measured using the input CS-1A from U25.

How can I get the measurement using the PMBUS?

Moreover, from my understanding the UCD9248 is sampling the power consumption from four different sources at 1.25 kHz. Is it possible to configure the UCD9248 in a way that it measures only the source I am interested in (VCC_INT ßà CS-1A) at 5 kHz?

Best regards,

Luis.

gnarahar · ‎05-22-2018

@luisengelmotejero You can use a TI USB Interface Adapter and use TI Fusion Digital Power Designer software to read the various voltage rails for voltage and current. Check the below AR's

TI Power Solutions: https://www.xilinx.com/support/answers/39037.html

TI USB Adapter: https://www.xilinx.com/support/answers/54022.html

- Giri
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