Other Parts Discussed in Thread: BQ25780, INA214, , INA114
Tool/software:
Hi,
I´m designing an PCB with the BQ25780 and have some strange behaviour with the current measurement.
In my first design I realized, that the measurement on SRN / SRP is lower than the charging current measured at the battery. As an example, when the BQ25780 register gives me 710mA, I measured with a DMM 810mA.
In a second PCB design I also connected an additional current sense amplifier (INA214) at the shunt. Some result! Also the INA214 gives me 710mA :-O
For me it´s absolutely strange where the 100mA are gone...
Any idea?
Best regards,
Achim