T2 Telco Accelerator Card User Guide (UG1496)

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1.0 English

The power consumption of the Zynq® UltraScale+™ RFSoC XCZU48DR-2FSVG1517E device must be limited to a 40A maximum current draw on the combined VCCINT and SD-FEC rails. This limitation is rooted in the 0.85V POL powering these rails. It is expected that he 5G workload running on the Zynq UltraScale+ RFSoC can be accommodated well within this power limit.

The Xilinx® Power Estimator (XPE) tool must be used to ensure that this 40A maximum current limit for the combined VCCINT and SD-FEC rails is observed at the maximum operating junction temperature of 100°C. The card protection circuit initiates a fatal shutdown if the VCCINT and SD-FEC power consumption continues to exceed this threshold after the RF_CPU_RST signal has been asserted.

The T2 card is powered from the PCIe bus, with the following maximum current levels expected from each rail:

  • 12V at 4.5A
  • 3.3V at 2.5A

The total T2 maximum power consumption is expected to be ~62W.