BQ3060: BQ3060 CHG_FET OFF when charge to SOC=100 and cannot reopen when SOC<100

Hi Andrew,

There may be something wrong with your configuration, can you attach .gg file. Also an image of the registers and bit registers.

Thanks,

Hi Nick,

I think BQ3060 enters into primary charging termination as shown in figure below. My question is how to control BQ3060 goes out of termination and go back to charger mode when SOC decreased？

Best Regards

Hi Andrew,

When is the CHG fet being reopen? From the image charging should still be allowed.

Can you attach logs showing this behavior.

Thanks.

Does it indicate that the CHG FET is off?

Hi Andrew,

CHG FET is off yes. 

Best regards,

Hi Nick,

So, in my system, if the CHG FET is off, the battery cannot be charged. So, at that time the SOC will decrease. In test, the CHG FET will open when SOC is about 95%. But I cannot find any reference in datasheet about their relationship. So my question is: 1. Could I control the CHG-FET open again at this status when CHG-FET off? 2. If not, what time the CHG-FET will re-open automatedly?

Hi Andrew,

I am trying to track down the EVM for this part, it looks like we are no longer selling it on ti.com

Will get back to your questions later today.

Best regards,

Hi Andrew,

Can you export the .gg and attach here.

Go to file-> export in the BQEVSW

Best regards,