Other Parts Discussed in Thread: BQ77915
Hi, I have the Evaluation Board to check the BQ77915.
I´m interested in the develop one BMS to 3 cells (LiFePo4), but with this evaluation board (first check the evaluation board and next desing a PCB with the part BQ77915), when one of the cells voltage above 3.8V i cant see tha balancing (LED dont turn on). The BMS continues working until the voltage of this cells arrives to 4.2V, then the BMS turns off, until, it has a discharge.
I dont know if i´m doing something wrong or not.
I have to say that I configure the evaluation board to 3 cells. The power supply voltage is around to 20V and the charge current 30mA (the BQ77915 internal dicharge current limit is 50mA, perfect for me, to make the balancing well).
Could you help me, please?
Thanks and regards.