MAXREFDES1238: Scalable, single-input, 6-output, power supply solution for Version 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.

There are 16 ICs used in total:

• 1 Multiphase Controller IC
• 8 Multiphase Powerstage ICs (configurable from 1–8+ phases for an optimized solution)
• 2 9A POL switching regulator ICs
• 1 MAX77812 PMIC
• 1 MAXM17574 module IC
• 1 MAX15103 LDO IC
• 1 MAX15101 LDO IC
• 1 MAX40010 CSA IC

Other features include the following:

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