VDD_IN voltage issue about Orin nx 16g with Super mode

[bbear953308023]

I am so happy that the Jetson release the super mode for Orin series.
And I flash it into my Orin nx 16g with custom carrier board from seeed’s J4012.
I test it with MAXN_SUPER mode with both CPU and GPU full loaded. And the total system power reached 40W.

But when I look into the Product Design Guide from Jetson Orin NX Series and Jetson Orin Nano Series Product Design Guide. I find it require minimum 8V to the VDD_IN.

And I the current voltage of my carrier board’s VDD_IN is 5V.
But it seems that the system works fine till now.
I am wondering about the reason why we need to change the voltage of VDD_IN to 8V if we work with Orin nx 16g in Super mode.

Looking forward to you reply~

[Trumany]

Hi, the module can not bear current more than 5A. So it must be higher than 8V for VDD_IN for super mode with 40W power consumption.

[chrisvsbender]

Can someone explain more about the device tree changes for the new super mode? I can see in the super mode device tree sources for the Orin NX modules (SKU0-4) that the VDD_IN regulator is still limited to 5V, so how does NVIDIA allow the devkits to reach higher voltages on the VDD_IN line with this new version? Does it have to do with the adjustments to oc_throttle or bjt_offsets in the soctherm of the bpmp dtb?

[WayneWWW]

HI @chrisvsbender please file a new topic. And we can discuss your question there.