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BQ30Z55 VCT flag set but MCHG is not set in charging status ,FC is not set in battery status and gauging status ,when RSOC=100%,charging in 0℃。

ke huang
Intellectual 310 points
Other Parts Discussed in Thread: BQ30Z55

BQ30Z55 VCT flag set but MCHG is not set in charging status ,FC is not set in battery status and gauging status ,when RSOC=100%,charging in 0℃。

SBS config0-15=0X8C，SBS config16-31=8C

attached files are gg.file and log data.

gg.doclog data.xlsx

  • 0
    TI__Guru* 76230 points
    Hi ke,
    pls ensure your charger taper current is set to a lower value than the taper current programmed in the gauge. This will allow FC flag to set since your SBS data config flag is set to 0C8C... This means FC is configured to be set on valid charge termination given FCSETVCT flag is set to 1. Pls see the valid charge termination section of your TRM.. current has to be less (this doesn't include "0" ) than taper current for 2 consecutive 40s window...

    thanks
    Onyx