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SMBus BQ3060 hung
Hello all, it's me again with SMBus problems.I have 3 pictures in which it can be seen that BQ3060 stops acknowledging my messages and I have no idea why.This happens randomly, one in 100 times when...
View ArticleBQStudio and Learning phase
My goal is to use the BQ27421 and BQStudio to characterize several batteries and create a "golden image" to eventually program the chip in our design.BQStudio has a lot of capability but apparently no...
View Articlebq 34z100-G1 in Battery pack > 290Ah
Hi all,i have the need to use this product in lead acid 48V battery pack untill 500-600Ah; maximum current system is around 130A. I know that i can scale current reading as i want, and this is not a...
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Using BQ34Z100-G1 with single LiIon battery...
Hi,I am planning to use BQ34Z100-G1 for fuel guaging. I got the sample and when I tried to read throgh the data sheet/ application note - I was not able to figure out how do I connect this guage to...
View ArticleBQ27GDK000EVM to Programmable load not working, always pulling load
I am using a BQ27GDK000EVM board to try to profile a battery for a fuel guage chip. I am connected to an external EVM board through the I2C bus, and also connected to the EXT_Load/Charger. The...
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Current = 0 although battery is being charged/discharged ,BQ3060
Hello all.I was testing my charger, which has SMBus and noticed that it's reading 0 current although battery is being charged with 10A, voltage is rising and temperature too. I checked with EV2300...
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BQ40Z50-R1 SMBUS NACK
HelloSometimes, when I'm doing an smb block read to 0x44, I get a nack on the smbus address. Why ? IIRC, smbus protocol does not allow a device to nack its address.Here is an oscilloscope capture of...
View Articlebq27532EVM-656 and bqstudio
Hi all,I have recently purchased the EVM for the fuel gauge bq27532 which combines also the battery charger bq24250 so far i haven't been able to communicate with the board:I have tried to download the...
View ArticleBQ76940EVM data logging issue when probe TS1 pin & Gnd Pins using Multimeter
Hello Everyone,We wanted to remove RESET switch from bq76940EVM and connect mosfet there with gate signal from another controller to reset the bq IC.So before doing that we probed TS1 pin & Gnd...
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BQ34Z100-G1 Spec SLUSB5A error on example ground layout???
Hello,I am in the process of laying out a printed circuit board (PCB) for the BQ34Z100-G1.I am adhering as closely as possible to the design guidelines but I seem to have discovered a discrepancy with...
View Articlebq40z50 3d model
I'd like to get a step file for the RSM (S-PVQFN-N32) package for the bq40z50.Thanks.tom
View ArticleBQ3060- Use of FETControl(0x46) for control of CHG FET
I have a requirement for a charger/gas gauge combination that provides a means of enabling/disabling battery charging over the I2C bus. I received a "customized" charger board that uses the BQ3060 for...
View ArticleFind Chem ID and programming bq34z100-G1 for Lead crystal batteries.
Hi.We use the bq34z100-G1 to monitor a block of two 6cell Lead crystal batteries (24V 22Ah).To start with, I used Chem ID from another leas - acid battery in the database: ID 0804. - tried to get all...
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BQ78350-R1 display LEDs not lighting up
We are currently testing a first design iteration of a battery management and gas gauge PCB having implemented the BQ76930 analog front end combined with the BQ78350-R1 host controller. We are testing...
View ArticleAbout TTF(Time To Full)command of BQ27542-G1
Hello, The BQ27541-G1 has Time To Full(0x18/0x19) command. However, the BQ27542-G1 doesn't have Time To Full command. 1, Why does bq27542-G1 is deleted that command? 2, Does the BQ27542-G1 have another...
View ArticleBQ34z100 CHG bit never gets set
Hi AllI'm running a bq34z100g1. For some reason the charge bit never get set in the FLAGS register.The DSG does get set when I discharge.Running LION 5200mAh pack at 11.1V Samsung packKind regardsBen
View ArticleSOH in bq27425
Hello,I'm testing a bq27425 with a Li/Ion 4800mAh capacity battery. I wrote in the NVM in 'DesignCapacity' the value of 4800mAh. I then let running the system for around two days. Everything works...
View ArticleCEDV or IT?
In general terms and with perhaps some examples:Which is better CEDV or IT?If a customer asked for IT but we were to offer CEDV (You guessed it bq78350). What are the pros and cons of either please?
View ArticleHow to use GPC Packager?
Hello,According to the SLVA725, I am able to use GPC Packager, which is a TI's bqStudio software utility. I downloaded the latest version of bqStudio but I couldn't find the utility.Also, the report...
View ArticleCalibrating bq27421-G1B on custom board
I have designed a custom board running Linux with the bq27421G1B gas gauge. I am able to read parameters correctly from the device, however I have not done any calibration for it. I do not have...
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