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Supermicro X11DAi-N Server Motherboard Review (Page 3)

By Steven Bassiri from Mar 30, 2018 @ 6:00 CDT
TweakTown Rating: 91%Manufacturer: Supermicro

Circuit Analysis

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X11DAI-Nhas a simple block diagram showing what is connected to what.

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Both CPU VRMs are identical and use 6+1 phase VRM using high-quality Texas Instruments parts that are VR13 ready. The CPU VRM uses NexFETs, the 70A CSD95480 for the six phases and 50A CSD95495 for the one phase and memory phases.

We find that the CPU VRM utilizes the 6+1 phase TPS53679 D-CAP+ digital PWM controller. We also find the TPS53622 (2+0 or 2+1) PWM and TPS53659 (4+1 or 3+2) used around the memory area to control memory rails.

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The memory VRMs use TPS53622 and two 50A NexFETs for power. All the Pulse inductors you see are rated for 70A.

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