Other Parts Discussed in Thread: TPS65910, TPS65218
Hi ,
I am seeing an incomplete shutdown on Beagle Bone Black with the latest linux image. The console output reads " power down" and the I see that the BBB keeping VLDO4 high. As per Mathijs' answer to the question https://e2e.ti.com/support/power_management/pmu/f/200/t/651787 and https://e2e.ti.com/support/power_management/pmu/f/200/p/651787/2396232#2396232 it is understood that there is some leakage path. This is also mentioned by BB in reply to the question at https://e2e.ti.com/support/power_management/pmu/f/200/p/647421/2386027#2386027.
I am using a BeagleBone Black with Battery connected.. Here, it is noticed that in my BBB the Vsys is always high. Vsys = Vbatt at shutdown. ( I issued the linux shutdown command - "poweroff"). This is found to drain the battery.
Is this expected behavior ?
Will Vsys never be brought down to zero ?
How can I bring Vsys down ?