Self-defined carrier board for Xavier about auto power on

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

Hi,

Here i have some question about auto power on for xavier in self-defined carrier board

1, without MCU and power button, how can i achieve the auto power on like TX2 ?(In tx2 design, i connect A49 CHARGER_PRSNT# to GND)
2, I want to use 12V as the SYS_VIN_HV power, how much current should i design for it ?
3, As similar above, how much current should i design for SYS_VIN_MV ?

2

Hi,
Q1 please refer to the OEM DG section “4.4.1 Power-On - No MCU”, ACOK_L pulled to GND.
https://developer.nvidia.com/embedded/dlc/jetson-xavier-oem-product-designguide
Q2 SYS_VIN_HV power = 20V*5.4A = 108W, when 12V, current = 108W/12V = 9A.
Q3 same calc way.

3

Hi,
I have got you replay, and i am now analyzing the OEM DG section “4.4.1 Power-On - No MCU”.

And if I use the the mcu EFM8SB10F8G-A the same as NVIDIA JETSON AGX XAVIER DEVELOPER KIT, can NVIDIA provide the code for MCU?

4

Hi,

Do you have detail analysis about OEM DG section “4.4.1 Power-On - No MCU”, and in that section it says the way to achieve the Auto-power on, But the timing sequence is not described, and I cannot fully understand it.
Can you provide the detail and help me?

5

You can also refer to reference schematic for more info about No MCU design. All doc we can provide are in DLC, if you have questions, please describe in detail.