Reduce orin nano idle power

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

I have a orin nano dev kit board(8G), just flash the default Jetpack 5.1.1. When power on the system(utuntu 20.04 desktop), I can see the idle power data is below.

CPU GPU 360mW
SOC 1.5W
VDD_IN 4.7W

The CPU and GPU only take about 360mW, SOC is 1.5W. Why does VDD_IN take so much power 4.7W? Is there any ways for me to reduce the idle power?

2
  1. RAM consumes much power.
  2. The module’s step-down voltage converters are less efficient at low power. Peak efficiency is at about 80% load.
  3. Jetson is not specifically designed for super low power. If the idle power is a problem you may need to implement power-on/power-off mechanisms on your custom baseboard.
3

Hi,
For Orin Nano, we have the 7W mode:
Jetson Orin Nano Series, Jetson Orin NX Series and Jetson AGX Orin Series — Jetson Linux Developer Guide documentation

We would suggest have at least 7W for the system.

4

If some HW modules like ethernet/SPI/UART etc wont be used, can I turn off them to save the power for them?

5

On Orin Nano you won’t notice the difference for SPI/I2C/UART. You can’t turn off the Ethernet PHY chip.

6

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