I am working on a project where I am trying to use a mobile battery power bank as a supply to my system. The battery power bank can provide 5 V @ 2.4 A. The output of this power bank goes into 2.1 mm DC Jack installed on my platform. At the input of my platform, I have a boost converter to transform 5 V (from battery power bank) to 6 V which is used by other circuits in my system.
I see that the input 5 V gets discharged in a periodic manner approximately with 2 s period which causes the output of my boost converter to also vary periodically and reset the other circuits. I have verified that this behaviour occurs even when the boost converter is not loaded and not connected to any other circuits.
However, everything works correctly if I supply my system with a bench top power supply instead of a power bank.
So coming to question, do you guys know what might be really happening here with power bank supply?