Problem with powering via DC barrel jack

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi!

I have a problem with my Jetson Nano Carrier Board. I connect my barrel jack power supply, but jetson doesn’t start. The device powers up fine via uUSB or GPIO header. It is the very first version of the carrier board.

  • J48 is in place
  • TPS25944L VIN is 5.25V
  • TPS25944L VOUT is 0V
  • Enable pin of TPS25944L (DC_EN_UVLO) is at 1.2V
  1. Is it possible that I have a board with a faulty TPS25944L chip? The board worked fine for over a year, but that’s the first time I’m connecting it using the DC jack.
  2. Perhaps the VIN of 5.25 is tripping the over-voltage protection?
3

Hi

Looks power mux IC TPS25944L doesn’t work, Please make sure the surrounding resistor and cap no damage.

4

All the components around it look as good as new. Does that mean that the TPS25944L is faulty?

5

It could be TPS25944L faulty if everything else is good.