Use case of power monitor on Jetson TX2


Why does Jetson use power monitor IC? (I was looking at OEM design guide.)
I think it is easier to detect power good signals than design the circuits for power monitoring if the purpose is to detect power failure.

But I also know that the IC generally provides the following benefits:

  1. Shutdown more properly during voltage drop
  2. Alert to system when voltage drop or current load increases
  3. Control fan and current safely when current load increases
  4. Enable the state of current control when debugging

Are there other reason for using the IC?

Thank you for your time.

Just detecting power good is not enough for system security. Power monitor is used to monitor several important power rails and report the voltage, current and power data to system so as to do the corresponding action, also it can generate interrupt when some rails reach the preset threshold.