bq20z65 cell balancing
Dear Sir,I am developing a battery pack - Li Ion 14V8 8800 mAh - which uses a bq20z65 gas gauge ic. Actually, I am updating the product from the bq2040.I understand the cell balancing function can...
View ArticleBQ27510-G3 calibration and Golden Image Generation
Hi allWe are using BQ27510-G2 in our existing product. I already taken Calibration for 20 Boards using BQ27510-G2 and generated Golden File.Now we are changing to BQ27510-G3 for that we are going...
View Articlebq34z110 NTC alternative
Hi All,Can I use an analog temp sensor, such as LMT87, in place of NTC thermistor network to save BOM cost?would bq34z110 accept such linear input behavior?
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bq28400
In the datasheet for the bq28400 gas gauge, figures 3 and 4 appear to have the order of the CHG and DSG FETs reversed. Figure 4 seems to be correct as it matches an earlier block diagram.Can someone at...
View ArticleCell PTC vs BMS voltage violation
Hi folks,Consider a 10S pack with 3V per cells.Each cell has a builtin PTC with a lower trip current than what the BMS overcurrent protection is set to.Apply a short between pack+ and pack-.One PTC...
View Articlebq40z50 - how to start
Hi,we will use the bq40z50 for an 2-Cell Li-Ion battery pack in an microcontroller driven device.I've read the thread "Introduction to Multi-Cell Gas Gauges" on top of this forum and some other...
View Articlebq76940 EVM: 5 missing schottkys?
In bq76940 EVM, there are 12 schottky diodes(D16-21,32-37) used to prevent polarity reversal at the AFE inputs upon a batt short circuit (explanation is on p.30).Why are there no schottky on VC0 to VC5...
View ArticleCreate VOUT on the EV2300 HDQ port to program bq26500
We're writing production software to test and program the bq26500 gas gauge using the EV2300 HDQ port. To program the bq26500 EEprom you need to create a pulse on the VOUT, which the bq26500 Monitor...
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BQ3060 + EV2300 data flash writing problem
Hi,I'm using the TI BQ gas gauge evaluation software with EV2300 tool and with a BMS based on BQ3060 supplied by a manufacturer .I have a problem then I want to change the values in the Data flash...
View ArticleBQ27510-g2 programming using bqfs
Hi,We were programming BQ27510 with bqfs file using custom USB to I2C kit and we’re encountering errors during the Read and Compare Data command. USB to I2C communication is working as we were able to...
View ArticleBQ27410 toolchain issues and power mode selection.
I have a battery-powered product for which I am developing firmware, and the HW design team have designed this with a BQ27410 fuel gauge. I am having some issues with getting everything to run properly...
View ArticleWriting in the Manufacturer Info Block of bq27510-G2
Hi,I had done multiple dfis before and was able to parse the bqfs to be included in the C# code for the programming at production phase.As a last minute request of the client, they would want to redo...
View Articlebq27541-G1 to be used with 4S battery packs
Hello ;-),I just want to use the bq27541-G1 in an 4S battery pack, when I read the datasheet I found a Power Supply Pin and a Battery Pin, also an LDO- so far so good , but I did not find any...
View Articlebq20z655
We are using the bq20z655EVM and bq20z655-R1 for developing. The SW sends MAC (SMB ox00) followed by SMB extended words ox0007. In the SLUU493 (bq20z655 Reference) document we couldn't find...
View Articlebq40z50 Creating & using a golden data flash image
Assuming you've done a successful learning cycle on your pack, is this the sequence to create a golden data flash image for the bq40z50?1. Start Battery Management Studio.2. Go to the Data Memory tab...
View Articlebq40z50 high current application
I'm attempting to use a bq40z50 in a high current application (2-3C discharge). I did the IT calibration as described, with a C/5 discharge, and the gauge seems to be tracking capacity well at low...
View ArticleBE34Z110 - Using a Hall Effect Current Sensor + Wireless Connectivity
Dear Sir/Madam,We are considering incorporating the BQ34Z110 into a lead acid battery monitoring system, however the battery system is an existing one (consisting of several bats in a string) and we do...
View ArticleBattery Fuel Gauge Requirement for BQ24650
Hi TI,We are using the Battery Charger part BQ24650 in one of our upcoming proto modules.The battery pack planned is 3.7V, 2000mAh rating.We are in need of a battery fuel gauge part that supports...
View ArticleSMBus single Cell Fuel Gauge?
Team-After reviewing the selection guide, it appears that we do not have an SMBus compatible fuel gauge for single-cell (1S1P) applications- please confirm this.The only device that will come up under...
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Optimization cycle in BQ34Z110 ; VOK flag not set
Hi all,We are using BQ34Z110 fuel gauge in one of our designs to operate with a 12V 7AH lead acid battery. We have completed the configuration,calibration part & now want to run a optimization...
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