Powering Jetson AGX Orin with plain 12v power source over USB-C

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

Hello guys,

I am trying to power the Jetson AGX Orin Dev kit with a plain 12v over USB-C Port. When I just connect the positive and negative terminals, nothing happens, pushing the power button does nothing as well, tried both the USB-C ports, same behaviour.

I remember reading about having to ground CC1 and CC2 here in the forum, (but cant find the post again) tried that as well and did not bring any luck. Also, I tried to power the Jetson with plain 5v over USB-C and it did momentarily light up the Power LED and went off immediately. This got me wondering if I need some USB PD voltage negotiation logic running behind my USB-C power supply. Is this necessary?

Does anyone have experience with driving the AGX Orin Dev kit with plain USB-C power? Are there any official recommendations for such an USB-C PD board? All I have is plain 10-20V available and I would like to use the USB-C plug to power my AGX Orin.

Thanks!

2

Hi,
Here are some suggestions for the common issues:

1. Performance

Please run the below command before benchmarking deep learning use case:

$ sudo nvpmodel -m 0
$ sudo jetson_clocks

2. Installation

Installation guide of deep learning frameworks on Jetson:

3. Tutorial

Startup deep learning tutorial:

4. Report issue

If these suggestions don’t help and you want to report an issue to us, please attach the model, command/step, and the customized app (if any) with us to reproduce locally.

Thanks!

3

Hello carolyuu, I think you misunderstood my problem. The issue is not related to performance issues on the Jetson but powering the Jetson over a 12v Supply.

4

The USB ports take 5V 3A input. You will destroy the board if you (attempt to) connect 12V to a USB connector. Use the barrel jack to provide 12V to the board.

6

There are two ways as below showing to power board. You can choose other supply based on the 19V adapter included or try DC Jack supply.

• 2× USB Type C (either for power input - 19V Adapter included)
• DC Jack: 7V to 20V (Alternative to Type C)

7

Thanks a lot for your response, I have the freedom of setting the dumb (no USB-PD) input voltage to anything between 10-20V and in terms of Current, I have upto 6 Amps available so that should cover the requirements of Orin very well.

I would like to use the USB-C plug and not the Barrel plug to connect because of issues we had with the barrel plug previously. The setup is for an RC car that is driving Off-road and has a lot of vibrations and USB-C has been better than the Barrel jack in terms of connector reliability. It is not possible to use the provided 19v adapter because of obvious reasons.

I tried to power the Jetson with plain 19v, 6 Amps peak bench power supply but could not manage to get it switched on.

My question is, with the 19v on the USB-C connector, why wont the AGX Orin power on? What am I missing?

8

the USB-C PD Standard allows for a voltage /amperage negotiation . I believe that this is done with a circuit embedded in the USB cable. There is more here. https://linustechtips.com/topic/1450488-how-does-usb-c-power-negotiation-protocol-works/

9

" dumb (no USB-PD) input voltage" is not supported.

10

Thanks a lot, this was exactly what I was apparently looking for. So technically, if there is a USB-PD power negotiator Board in between the Jetson AGX Orin and the “Dumb” input voltage, that would be the recipe for success, am I correct?

11

A correct cable is necessary. Please refer to USB Type-C specification for detail.

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