bq34z100-g1 I.T. learning charge cycle after discharge with OCVTAKEN set
Hi, I am near the end of a second charge cycle, and following instructions I will disconnect the charger for the battery to relax "until OCVTAKEN is set" but OCVTAKEN has been set during the entire...
View ArticlePrototyping mods for bq24z100-g1 EVM
(Please visit the site to view this file)Hi, I've attached the datasheet for our product battery shunt resistor. We use 2 in parallel for effective 0005 value @ 6W, our current from K-2 Energy...
View Articlebq34z100-g1 battery gauge accuracy
Hi,My questions to the battery gauge, bq34z100-g1 are as follows:1) TI FAE in Taiwan helped our CM to create golden image for the battery gauge. When we try to verify the golden image, we noticed that...
View Articlebq40z50-R1 [LEDRCA], LED Flash Alert?
In TRM, it saidIf [LEDRCA] = 1 and the BatteryStatus[RCA] change from 0 to 1, the LED display will also flash with LEDFlash Rate according to the CHG Flash Alarm or DSG Flash Alarm setting.I don't...
View ArticleBQ27621: I2C Rise Time
Hi,My customer had a few questions regarding the I2C lines on the BQ27621.1) It states that the max rise time of the I2C line is 300ns, will a larger rise time lead to potential bit errors?2) Is...
View Articlebq40z60 - Not charging - what is wrong?
Hi,I am using the bq40z60EVM and bqStudio to get an initial working configuration but it refuses to charge.I set the NR flag as the battery is not removable and also the number of cells to 2.I also use...
View Articlebq27421-G1 BIN connection when charger use thermistor
Can't we connect bq27421-G1 BIN pin with Battery pack thermistor when charger device use battery pack thermistor to monitor temperature?I think BIN pin doesn't become Low in this case. The charger...
View ArticleBQ27GDK000EVM-GDK FW Update
Hello,Where could I found "Firmware Update Image" for the MSP430 of the BQ27GDK000EVM board?ThanksChristophe
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A syntax highlighting solution for GDK scripts
For people on this board who write a lot of scripts for the GDK, I recommend using a syntax highlighter that will recognize the keywords in your script and make it more easily readable. I created one...
View ArticleBQ40z60 does not enter constant voltage phase during charging
Hi Tom,I had many problems with BQ40z60, which most of them I could tackle.one problem I had is that, during charging the constant voltage phase does not occur. The current is constant and the voltage...
View ArticleAbout Fuel Gauge type problem
Hi sir,May I know What difference about passive and active Fuel Gauge?what is type at TI ? thanks.
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About BQ34Z100 current displayed in GUI...
Dears,Is there anyone know what should I check since the current value I got in GUI is always negative!Thanks.
View ArticleNot able to identify chemistry using mathcad
Hello,I'm using a bq27510-g3 with a 9000mAh 1s2p pack of 18650 LiIon batteries. After cycling and producing a .log file, I was not able to identify chemistry ID using mathcad script.Could you please...
View Articlebq78350, reading wrong values
Hi,I am getting some false readings from the bq78350, I have enabled pec to avoid just that, however, sometimes when I request pack voltage (SBS CMD 0x09), I get 3600 . this is the answer of SBS CMD...
View Articlebqeasy cell chemistry selection
Hi,We are trying to use the following panasonic battery with BQ27520EVM. www.orbtronic.com/protected-3400mah-18650-li-ion-battery-panasonic-ncr18650B-orbtronicI am trying to generate the golden data...
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bq27520evm FC bit not set
Hi,We are trying to perform battery learning cycles with the BQ27520EVM. we are using the BQ27520EVM for the battery charging purpose. We are perform learning cycles on a single cell based on panasonic...
View ArticleBad reading of Full Charge Capacity, Remaining Capacity, and Cycle Count via...
Hi,I am using the BQ34Z100G1 Evaluation Board and MSP430F5247. I am using I2C to read the different registers from the fuel gauge. So far, I am able to correctly read TrueRC, TrueFCC, Voltage,...
View Articlebq40z60 - How to determine Chemistry ID using bqStudio
Hi,I am trying to use the bq40z60Eval board and bqStudio to determine the chemistry ID of a cell which is not in the predefined database.I need some help with the following topics:1. How do I set-up...
View Articlebq40z60 - How to determine Chemistry ID using bqStudio
Hi,I am trying to use the bq40z60Eval board and bqStudio to determine the chemistry ID of a cell which is not in the predefined database.I need some help with the following topics:1. How do I set-up...
View Articlebq27441 with bq24020 taper current
What taper current I take to calculate taper rate? In the datasheet for bq24020 charger there are 2 values for the taper current, depending what USB you are using. USB500 has 50mA taper current when...
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