

Xilinx® Virtex® UltraScale+ HBM VU37P Power and Timing
One of Xilinx® ’s latest families of FPGAs is the Virtex® UltraScale+™ HBM. This family is targeted for very high performance applications in computing, storage and networking. It features Xilinx® ’s highest on-chip memory density, with total on-chip integrated memory up to 500Mb, and high-bandwidth memory (HBM) up to 16GB. It also supports PCIe® Gen4 and transceivers up to 32.75Gb/s.
An FPGA with this level of performance demands a high-current power supply with tight regulation and extremely low jitter clock sources. This winning combination highlights the power devices that Xilinx® chose for their reference design called the VCU128 and recommends two clocking devices that would be an excellent fit for many designs.
Key Features
- Digital multi-phase power to deliver up to 125A at 0.85V while meeting the strict specs set forth by the Xilinx® VU37P
- Pre-programmed PMICs specifically designed to meet this use case
- FemtoClock®NG Universal Translator capable of 1GHz outputs with jitter specs in compliance with Ethernet standards up to 25G
Block Diagram

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