Tool/software:
I am using the BQ7695204, utilizing the REG1 3V3 output to power a microcontroller and some sub-circuits. Every 5 seconds, I observe 24 voltage drops of approximately ±100 mV with a interval of about 3 ms.
I noticed in another post that the BQ device performs an open wire check every 5 seconds with a 3 ms interval, which seems to be causing this issue.
When R705 is disconnected (removing the 3V3 load), I only see one voltage drop every 5 seconds.
I measured the VCx pins and observed the same intervals, suggesting that the dips are likely caused by the charging of the cell capacitors.
Interestingly, these voltage dips are only present on the REG1 LDO output and not on REG2 or REG18. Adding additional capacitance to the REG1 pin does not resolve the issue.
My question is: Is there any way to prevent this?
