BQ27541-G1 Behavior in low temperature
Hello, I have a PCB with the BQ27541-G1 gauge and encountered a strange problem with low temperature operation.At -20C, the fuel gauge decreased the LiPo cell's remaining capacity, as expected....
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bq27510-G3 relaxation mode
I'm looking to use the bQ27510-g3 in a design in which the target circuit spends a lot of time in a low power state. When this occurs, I need the gas gauge to still accurately report the battery.My...
View ArticleBQ20Z95 smbus communication failure
Hi, During flashing dfi programmatically from vb code dfi became corrupt and smbus communication has stopped. Doing some search on the forum, I checked if it was stuck at rom mode but it did not...
View ArticleBqTester Code Request
Dear TI,Please provide a copy of the source code for bqTester.exe.-Misra
View ArticleObserving Incorrect percentage in battery management using bq34z950
Hello,I am using bq34z950 IC for Lithium ion battery management, The IC is giving correct value of voltage and current for charging and discharging cycle, but I am not getting correct battery...
View ArticleLED display error with display button
I am using the BQ76930EVM and currently evaluating the BQ78350 fuel gauge chip using bqstudio. If I hold down the DISPLAY push-button for a time greater than 'LED Hold time', the display no longer...
View ArticlePush-Pull Output on BAT_GD on a bq27505-j5
The data sheet for the bq27505-j5 indicates that the BAT_GD pin is a push-pull configuration. However, I am measuring only a high output of 0.9V. I was planning to connect the BAT_GD output to the CE...
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BQ78350 Register Info Missing in Datasheet - Help Needed
I finally have built the I2C communication library for the micro processor I'm using with the BQ78350 for 4 cell LiFe battery packs. I have one last thing that I'm having trouble with due to the...
View ArticleBQ40z50 Datasheet Operating Conditions
The BQ40z50 Datasheet was apparently revised in Dec 2014. The revision changes list the addition of various tables but they do no mention the changes to the recommended operating conditions table.The...
View ArticleBQ27421 SRX Pin To System Power Rail Connection
I'm confused that where the SRX pin should be connected to. The data sheet says it should be connected to system power rail (Vsys). Would please tell me what does the system power rail represents? I...
View Articleover discharge protection ic
Hi !I want to protect my battery form over discharging .In my current project i am using Li-Po Battery of 4.2V,which i have to protect from over discharging .I found some ic which contain this feature...
View Articlebq78350 - Avaliable SMBus Commands in SEALED Mode
Hey guys I'm pulling data from the following registers when the BQ78350 is in Unsealed mode. As soon as I sealed the chip which I did by accident I saw that the registers below stopped returning the...
View ArticleReplace with TI device(gas gauge)
Hi Team,My customer currently uses MAX17048 for mobile phone and I'd like to replace with TI device for next model.http://datasheets.maximintegrated.com/en/ds/MAX17048-MAX17049.pdfThe lower cost is...
View ArticleC Driver or header files for BQ40Z50?
Hi everyone! I'll be accessing some basic functions for this device from Linux. I was just wondering if there has already been a driver or at least header files for this device so we don't have to...
View ArticleManually writing flash setup to bq34z100 over I2C?
Hello,I am developing a custom pcb with the bq34z200 IC as the gas gauging method for our main battery bank. To allow for us to tweak the parameters in the IC / read out the variables it is connected...
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bq78350 - Does Manufacturer_Block_Read require PEC?
Hi, I'm trying to communicate with the BQ78350 after its sealed so I can read the available registers like x0050 Safety Alert via the Manufacturer Block Read 0x44 command.Its not working and the only...
View Articlebq78pl116 Run Time To Empty
Hello,I am currently using the bq78pl116 with the bq78pl114 for a 6S1P Li-Po and I would like to know why the Run Time To Empty, Average Time To Empty and Average Time To Full (in bqWizard) are not...
View ArticleBQ76930 - high current (2A) balancing circuit
I am designing 8 cell LiFePO 20Ah battery management system, where speed of charging is one of the major points. Therefore, I am in need of pretty decent balancing current of at least 1-2A.Devices...
View ArticleBQ27510DRZR-G2 vs. BQ27510DRZR-G3
Hi, We are using the BQ27510DRZR-G2 in a current design and it appears it is going EOL. The replacement is BQ27510DRZR-G3 and I have been told the only differences are additional pin 12 functionality...
View ArticleBQ76PL536A errors reset
Hi,I have a question regarding the way to reset an error in ALERT_STATUS & FAULT_STATUS registers? If we detect an error via DEVICE_STATUS_REGISTER, we have a function that writes all bits of...
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