Forum Post: gas gauge for 2 li - ion batteries
hi I need some help in selecting the right gas gauge for my application.I am using 2 li - ion batteries connected in series (i need 7V) but charged separately (because I want to be able to cahrge it...
View ArticleForum Post: RE: BQ77910A recovery from OC (Over Current) and SCD (Short...
Dear WM5295,I examined your comment about the voltage over Vgs.that seems to be the problem!I replaced R41 and R48 to 2 x 200K resistors. which placing a steady ~6V on Vgs.this is a solution for this...
View ArticleForum Post: RE: Not able to change the qmax cell 0 value in bq34z1xx
Thanks Thomas. The device was gone bad, replaced it.I have facing another issue.I am trying to configure the BQ device through the microcontroller. I am able to configure a sublcass with out any...
View ArticleForum Post: bq78pl114 firmware update calibration
if performing firmware-update with bqWizard from bq78pl114 to ...114s12, the voltage calibration has to be explicitly preserved ("... click the Preserve Calibration check box"...).If uploading the...
View ArticleForum Post: RE: BQ20Z75 high current consumption issue
Hi Shirley,I am afraid that's not possible. That current is required for the proper functionality of the gauge.To detect the device is in sleep mode, you need to connect an ammeter to measure the...
View ArticleForum Post: bq3050 / Capacitor on BAT pin
Hi Everyone,I would like to know the impact on the operation of bq3050 if the smaller capacitance than 1uF will be used on BAT pin. I know that the BAT pin will supply power to LDO in bq3050 when...
View ArticleForum Post: BQ24192 charger IC charging current issue ?
Dear All, We are using BQ24192 in our design. By default charging current should be 2.036mA but when i connect Li-Ion 3800mAh completely discharged battery for charging its taking only 730mA....
View ArticleForum Post: RE: Not able to change the qmax cell 0 value in bq34z1xx
The device does not support switch switching subclasses in the same transmission. You will have to issue a STOP bit and start a new transmission.
View ArticleForum Post: RE: bq3050 / Capacitor on BAT pin
Hi Tom-san,Thank you for your quick response. I understood the purpose of this capacitor. I will request our customer to evaluate by using the capacitance they want to use with their system load.Best...
View ArticleForum Post: CPCKN pulldown design
Hi guys,in bq77908a's datasheet its written down that there are recommended application circuits for the CPCKN pulldown (page 7), when series FETs are used.Can you please send them to me or give me a...
View ArticleForum Post: RE: Bad HF Dynamic Impedance values leading to cell balancing...
Hi Tom,Yes we are working together, but there are some points i want answered.What I don't understand is why are OCV values still approximated/calculated even though the cell has been in a relaxed...
View ArticleForum Post: RE: BQ20Z75 high current consumption issue
Hi Onyx,I see, I'm not too sure on how to perform it. According to the manual of bq20z75, it seems something has to be done with the configuration of NR and NRCHG bits. When NR = 1, upon entering sleep...
View ArticleForum Post: BQ77910A Constantly drain (balancing) issue
Dear all,I´m running the BQ77910AEVM together with a Li-Ion battery pack which consists of 10 cells connected in series. I got one big issue: When I´m charging or discharging the pack a continuously...
View ArticleForum Post: RE: BQ77910A recovery from OC (Over Current) and SCD (Short...
Glad you found it. It should not be the Vgs while on that is the issue, but the speed of turn off.The DSG output is a roughly regulated (12V) signal within the Vgs range of common power FETs.R48 and...
View ArticleForum Post: BQ25504 (OK_HYST and OK_PROG pins)
Hello,According to recommendations (http://e2e.ti.com/support/power_management/battery_management/f/179/p/166934/610955.aspx#610955) read in this forum, we have made a BQ25504 electronic design, tying...
View ArticleForum Post: RE: BQ34Z100 - Capacity goes to zero with no load after a day or two
Hi Tom,We were able to capture the data on the problem we are seeing. I attached the log file with line 5435 going from 100% capacity to 0%. We didn't have IT set so that might be part of the problem?...
View ArticleForum Post: RE: BQ77910a stacking - BQ shows Short Circuit Charge flag every...
I noticed that Short Circuit Charge flag appears on both '910a when balancing is on. It doesn't matter which type of balancing is set. Flag appears even when there is no current flowing. (only CHGST...
View ArticleForum Post: RE: Advanced BQMtester HPA495 TIbqMultiStationNB2.18Setup.exe...
To extract the file, I have to put in "ti" as pw. So now everything is fine. I will try the sourcecode tomorrow. Again thank you for your quick response.Regards Max
View ArticleForum Post: RE: The difference of BQ27510-G2 and BQ27510-G3
The change-list is still under development for the bq27510-G3, but it is very similar to the bq27520-G4.I recommend that you look at the bq27520-G4 change list and the bq27520-G4 TRM for more details...
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