Max Error when using bq20z80 and bq29312
Is any one familiar with what increases the Max Error, when using bq20z80 and bq29312? Or with what can reset/lower the Max Error?
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bq27421-G1 Maximum Charge Voltage
According to the Quickstart Guide for bq27421-G1 (Rev. B) on Page 2, it states the following:If our battery datasheet states that the charging voltage is 4.2V, but the absolute max charging voltage is...
View Articlebq76940 current measurment
hi team,my customer T is At the moment I´m working with the bq76940EVM and the Battery Management Studio, but I have problems with the current measurement.In the bq78350 technical manual (SLUUAN7A) I...
View ArticleBQ27742-G1 Data Flash Definition
We are using the BQ27742-G1 in our design and have used the BQStudio to set the chemistry information in one of our battery packs. After a few learning cycles with this pack we now would like to use...
View ArticleBQ27542 SE pin
Dear Sir,Is there more description about BQ27542 SE pin(shutdown enable) ?Can I disable charger IC's /CE pin by SE ? Many thanks !
View ArticleBQ3060 I2C interface with dsPIC33
Hi,I have just had a battery pack dumped on my desk with the instructions to get the data read from the batteries through SMbus. I was only given the datasheet of the BQ3060, which is the power...
View ArticleBQ40Z50 voltage calibration
Hi,I use the BQ40Z50, when I do the voltage calibration, the BqStudio shows me an error " Calibration - Raw calibration block size returned after command 0xF081 or 0xF082 is an incorrect...
View ArticleBQ30423 - Datasheet or any documentation
I am trying to replace one cells from a dell tablet (2 cell total), and BQ30423 is the PMIC.The voltages and capacity are similar, and this seems to be successful.However, I would like a datasheet to...
View ArticleBQ34Z100PWR Questions
My battery is 25.2V. Do I divide that down to 0.9V going to the BAT pin?In the example circuits there is a switch that connects REG25 to VEN though a 1K resistor. How does this switch connection enable...
View ArticlebqStudio invalid download link
Hi, I received a mail recently from TI on the update of bqStudio. I am using bqStudio v1.3.36 currently. Tried to download the installer for v1.3.35 from the link provided but it seems to be a broken...
View ArticleBQ34Z100EVM SOC
HelloI am using the bq34z100evm and the bq Evaluation Software. When I started the Gas Gauge, the Max Load Time to starts with 56min and 100% SOC. After a while the Gauge shows 80% for example and...
View ArticleBQ76930EVM Load Detection
Hi, we are using the Evaluation Board of the BQ76930 and we would use the Load Detection feature, but with or without a load on the P+/P- connectors, the LOAD_PRESENT bit in SYS_CTRL1 register is...
View Articlegoing against dsbga land pattern recommendation
Hi,In order to conform to PCB design rules I would like to go against dsbga land pattern recommendations. I'm using the bq27532-G1 and would like to route 0.09mm traces with 0.09mm clearance in...
View ArticleMathCad mcd conversion
Hi, I have downloaded MathCad Chemistry Selection tool from www.ti.com/.../sluc138and MathCad Express from www.ptc.com/.../free-downloadsWhen following the instructions on MathCad Chemistry Selection...
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bq40z60 TCA&TDA Bits set - can not enable Charge FET & Discharge FET
Hi,I am trying to charge a 3S battery pack (3,7V / 7200mAh) using self-designed hardware based on the bq40z60EVM SBS 1.1. The hardware is almost the same - i have just left out the components used for...
View ArticleBQ34Z65x dual I2C buffer topology
I am using a BQ34Z651 gas gauge, and I have two communication paths. I would like to use two 9517A type buffers. I see warnings in the datasheet that the B side isn't compatible with other B sides, and...
View ArticleBQ27421-G1A auto shutdown
Hi,We are observing a very weird behavior of BQ27421-G1A fuel gauge. Our battery operated device was working fine normally and fuel gauge was giving correct battery level. But after some time it starts...
View ArticleCan't see voltage reading on BQ34Z110
We're using the BQ34Z110 fuel gauge and circuit has been implemented as the EVM; We have the circuit working as We can communicate to our PCB using the Bq evaluation software, change registers, but...
View Articlebq40z60 - Learning Cycle not starting with bqStudio
I am attempting to initiate a Learning Cycle on a 4-cell Li-Ion pack with bqStudio 1.3.35 through an EV2400 interface. But I get an error message: "No Acknowledgement from Device." The bq40z60 on the...
View ArticleCan I read the golden file from bq27510-g2?
I have managed to perform a Learning cycle, but when I pressed "All Done" in bqEasy, the program crashed with two error dialogs: "File access error" and "Automation error".The Update Status is 02, so...
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