According to the Jetson Orin NX/Nano Thermal Design Guide more power is dissipated when supplying 20V, presumably due to the 5V regulator/inductor. The only benefit I can imagine is that running the modules at 5V won’t result in the advertised maximum performance. Is this accurate? If not, what’s the advantage of supplying 20V vs. 5V?
Advantages of Running Orin Nano/NX at 20V
As you see in guide: 20V input power for each use case will be higher due to a lower regulator efficiency up to a maximum of 25 W total board power.
5V input can reach same performance as 20V input. The 20V/5V difference is due to module internal power design.
So what’s the advantage of supplying more than 5V? It seems like designing a carrier board with a variable supply is just added complexity and results in lower efficiency.
It is for different modules, legacy and advanced ones.
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