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BQ25150EVM: Bq25150

suraj nagulamalyala
Prodigy 130 points
Part Number: BQ25150EVM
Other Parts Discussed in Thread: BQ25150

   Hi,
Am currently working on bq25150 battery controller, i have small issue with timers and watchdog timer,
1.Watchdog timer is getting reset, even though am disabling in CHARGERCTRL0 Register ,how can i disable it permanently, what is the configuration need to be done..?
2.I want to charge an external LI-ION battery 3.7 v,using my bq25150,am getting 1.9v at my BAT terminals,how to set battery regulation voltage for charging external battery..
3.How to enable ADC ,if i want to read ICHRG,PRECHRGE,ITERM through ADC measurements,is it done internally by MCU,or we need to do it EXTERNALLY through ADCIN pin.

thankyou
suraj.N

  • 0
    TI__Mastermind 19195 points

    Hi Suraj,

    1. To disable the watchdog timer you should set bit 4 in CHARGERCTRL0. If it is still resetting you may want to verify this bit is being correctly set.
    2. You should configure the VBAT_CTRL register. How are you testing in this case? Can you give more details?
    3. Section 8.3.3.3 of d/s lists the pins that are available for ADC readings. With ADC_READ_EN register you can select which channel are enabled

    Thanks,

    Nick