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Infineon’s Zynq UltraScale+ MPSoC multi-voltage power supply fits in tight spots, tailorable to your board’s specific needs

Xilinx Employee
Xilinx Employee
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Like any semiconductor device, designing with Xilinx All Programmable devices means dealing with their power-supply requirements—and like any FPGA or SoC, Xilinx devices do have their fair share of requirements in the power-supply department. They require several supply voltages, more or less depending on your I/O requirements, and they need to have these voltages ramped up and down in a certain sequence and with specific ramp rates if they’re to operate properly. On top of that, power-supply designs are board-specific—different for every unique pcb. Dealing with all of these supply specs is a challenging engineering problem, just due to the number of requirements, so you might like some help tackling it.


Here’s some help.


Infineon demonstrated a reference power supply design for Xilinx Zynq UltraScale+ MPSoCs based on its IRPS5401 Flexible Power Management Unit at APEC (the Applied Power Electronics Conference) last month. The reference design employs two IRPS5401 devices to manage and supply ten different power supplies. Here’s a block diagram of the reference design:



Infineon Zynq UltraScale Plus MPSoC Power Supply Reference Design.jpg


Infineon Power Supply Reference Design for the Zynq UltraScale+ MPSoC



This design is used on the Avnet UltraZed SOM, so you know that it’s already proven. (For more information about the Avnet UltraZed SOM, see “Avnet UltraZed-EG SOM based on 16nm Zynq UltraScale+ MPSoC: $599” and “Look! Up in the sky! Is it a board? Is it a kit? It’s… UltraZed! The Zynq UltraScale+ MPSoC Starter Kit from Avnet.”)


Now the UltraZed SOM measures only 2x3.5 inches (50.8x76.2mm) and the power supply consumes only a small fraction of the space on the SOM, so you know that the Infineon power supply design must be compact.


It needs to be.


Here’s a photo of the UltraZed SOM with the power supply section outlined in yellow:




Infineon Zynq UltraScale Plus MPSoC Power Supply.jpg 


Infineon Power Supply Design on the Avnet UltraZed SOM (outlined in yellow)




Even though this power supply design is clearly quite compact, the high integration level inside of Infineon’s IRPS5401 Flexible Power Management Unit means that you don’t need additional components to handle the power-supply sequencing or ramp rates. The IRPS5401s handle that for you.


However, every Zynq UltraScale+ MPSoC pcb is different because every pcb presents different loads, capacitances, and inductances to the power supply. So you will need to tailor the sequencing and ramp times for each board design. Sounds like a major pain, right?


Well, Infineon felt your pain and offers an antidote. It’s an Infineon software app called the PowIRCenter and it’s designed to reduce the time needed to develop the complex supply-voltage sequencing and ramp times to perhaps 15 minutes worth of work—which is how long it took, apparently, for an Avnet design engineer to set the timings for the UltraZed SOM.


Here’s a 4-minute video where Infineon’s Senior Product Marketing Manager Tony Ochoa walks you through the highlights of this power supply design and the company’s PowIRCenter software:







Just remember, the Infineon IRPS5401 Flexible Power Management Unit isn’t dedicated to the Zynq UltraScale+ MPSoC. You can use it to design power supplies for the full Xilinx device range.




Note: For more information about the IRPS5401 Flexible Power Management Unit, please contact Infineon directly.


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