MAXREFDES1238: Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform

Size, cost and complexity are some issues facing Power Electronics Engineers when it comes to designing a power solution for high power FPGAs. The Mulltiphase Controller, Multiphase Powerstage and MAX77812 are just some of the Maxim ICs which eliminate these issues when completing a high power, multiple output design. The combination of the highly integrated Multiphase Controller with the Multiphase Powerstage ICs eliminates the need for many external components when designing for a high current rail. While our highly efficient MAX77812 PMIC easily manages the lower power rail requirements.

In this design a single 12V input supplies a circuit which outputs 6 separate rails ranging from 500mW to 130W.

The design is specified to meet the XILINX Versal ACAP AI Core Series UC1/3 requirements. The design layout is also optimized for the Versal ACAP IC.

Power Solutions for Xilinx Versal, Artix-7, Spartan-7, and Zynq US+ MPSoC FPGAs ›

MAXREFDES1238 Board Enlarge+

There are 16 ICs used in total:

Other features include the following:

  • Single 12V supply
  • X% Efficiency
  • Optimized layout for Versal ACAP IC
  • Small solution size
  • Highly scalable


CAD Layout

Test Results


20A User-Configurable Quad-Phase Buck Converter

  • 20A Maximum Output Current (5A per Phase)
  • VIN Range: 2.5V to 5.5V
  • VOUT Range: 0.250V to 1.525V with 5mV Steps