BQ24610: VFB > VLOWV detection when pre-charge timer expired

Hello Jakub,

I'm confused my your question.

Please refer to section 9.3.4 Precharge of the datasheet

 In order for the charger to enter precharge it has to compare VFB voltage and VLOWV threshold.

Best Regards,

Christian.

Hello Christian, 

my question was that after pre-charge period (after 30 minutes timer expired) voltage VFB is compared under pre-chagre current - charger is ON (like on chart figure NO.14 above) or VFB is compared under zero current - chagred is OFF? Because VBF voltage under pre-charge current can be higher than under zero current. I am thinking how to set pre-charge current. Do you understand my question now?

Thank you

BR

Jakub

Hello Jakub,

If the 30 minutes of precharging timer is expired the charger wll turn off, and a FAULT is indicated on the status pins.

Here is what will happen if the timer has expired 

 Best Regards

Christian.

Hello Christian, 

thank you, but I will try to place my question again:

During per-charge phase the voltage VFB is compared under pre-chagre current? or not? the voltage VFB is compared under zero current? or the voltage VFB is compared under some specific current?

Thank you

BR

Jakub

Hello Christian, 

thank you for your answer.

BR

Jakub