Hi,
I made my own BQ40Z60 PCB based on original TI's EVM. Everything works great except charging current control. It looks there is no control.
I'm using 4-cells of US18650V3 in 4S configuration. Device connected to VSYS generates about 2000mA constant load. I changed "Rec Temp Charging" current values to 2800mA.
Everything works great when battery pack is fully charged. After start using battery pack energy, when discharge current exceeds 2800mA (+/-30% state of charge) plugging back adapter only reduces current from pack but BQ40Z60 doesn't want to start charging it. If I increase "Rec Temp Charging" current values i.e. to 4000mA charger works good up to the moment when system load reaches i.e. 0mA (no load), then batt. pack charging current exceeds max continous charging current (from cell's datasheet = 2150mA).
Is it possible to set Charging Current on enough high level i.e. 4000mA, and separatelly max charging current for batt. pack, i.e. 2150mA or lower?? How to resolve this problem?