BQ24103 Status Bits

Hi Matt,

No, it is not suppose to flash if you are using bq24103. You can review your schematic by using the EVM as reference. Is it flashing at all times? please send me some scope plots to look and a description of the test set up to understand the issue better.   

 -Tahar

I am attaching my schematic.  I have seen units briefly flash STAT1 after charge is terminated and STAT2 is active.  I have also seen units flash STAT1 when the charge is first starting.

Matt,

 The schematic looks good. Make sure that the STAT and BAT pin are not getting noise. Probe them with scope and make sure they are clean and at the right level.

 -Tahar     

Hi matt,

I am just looking at your schematic again, I noticed that the power ground and the analog (or signal ground) are the same. This may cause some noise issue in the charger; can you please use the layout of the EVM as a reference?

 To exactly understand what happens during the start up and the termination, we need to look at the stat pin the battery pin voltages using a scope probes.

 Tahar  

Hello,

Did you solve this issue? We face it too.

Best regards

Michel

I having the same issue in BQ24103, STAT1 pin start blink once battery voltage reach more than 8.3V

here with we have enclosed scope image for your reference.

I charge - 1 Amps

Rset1 - 10k

Rset2 - 10K

Battery spec is 7.4V / 4400mAH

TTC - 150 nf and connected with ground

Rajasekaran

Let us work this one off line.