BQ25120AEVM: No load current consumption

Hello Agusta,

Does any activity occur when you see the current spike? Does the device go into Active BAT mode? what is the voltage on /CD?

Hi Raheem,

I don't have anything connected to the EVM (no - load). the jumper is pulled off of CD - VSYS pin. I see 0v on the CD pin.

Hi - bumping this thread!

Hello,

Is VSYS and PMID disconnected from everything on the EVM. Including the VINLS, LED pull ups, I2C pull ups?

Hello,

Is there any update on this?

Hi Raheem - There was nothing connected to VSYS, PMID. I removed user led jumper and i2c pull-up jumper. Batt with ammeter connected to the eval board.

I can re-check or share setup via PM

Hello Agusta,

Are you able to reproduce the current spikes? How often do they occur and can you measure the time between the spikes. Also can you show a plot of the SW pin of the DCDC converter  along with the load current.

Hi Raheem, I have every jumper disconnected on the evm, the pulses seems to be about 600ms apart - 

When measuring SW with dmm, the pulse frequency jumps, seen in the graph below. SW measures 1.816V on my dmm. 

Do you observe any such behavior on the units you have? 

Hi, Just checking in to see if the information I provided earlier was useful/reproducible.