Connecting Li-ion battery pack to bq20z40evm
Hi,I have a 3-cell and 4-cell Li-ion battery pack which is completely sealed and only 2 wires(positive & negative terminals) are provided. How do I connect this to BQ20Z40EVM board through the...
View Articlebq20zXX dfi programming - data erase - BootROM mode
Hello, I noticed the following:In the VB6 sample code TI is suggesting to erase all data rows in pairs with the 0x11 command.I logged the actual I2C communication and found that TI EV2300 with bq...
View Articlebq20z451 version 0511
Hi All !I have bq20z451 v.0511SEAL = ONQuestion: how to initiate the procedure UNSEAL?If someone knows - please write me an email: vvg@skyline.od.uaAny ideas - are welcome.Chip name: bq20z451 H/W...
View ArticleChemistry ID
Dear all In the Application Note SLUA372 "Support of Multiple LI-Ion Chemistries with impedance track ", the report decribes the process of selecting the correct chemistry ID for a particular...
View ArticleLearning cycle not initialized
Hello,I use bq27520evm (gauge), bq24172evm (charger), EV2300 and bqEASY. I can't complete learning cycle due to bad registers updates.After testing 520G4 with some errors during flash write in bqEASY...
View ArticleBq27505J5 DFI
I've written a program to load a DFI file into Bq27505J5. Program seems to run without error. Checksums and register 66 indicate all is well. The problem is after programming the DFI , I2C...
View ArticleValues of CC Gain and CC Delta
I am not using the evaluation software, but i am using a microcontroler with i2c to communicate with bq and I did already some writes and reads from flash I am using the bq34z100 and a I have a doubt...
View ArticleUpdate BQ27520-G4 firmware and bq27520_3_29.dfi file not found
My company is considering the use of the BQ27510-G3 Fuel gauge, and we bought the BQ27520EVM to evaluate the part.We received the EVM with BQ27520-G1 firmware, so I tried to update the firmware to G4....
View ArticleBQ27510 bqeasy error "Dataflash.GasGauging.State.UpdateStatus does NOT = 2"
Hello,I'm using the bqEasy Software for callibrating my Li-Ion pack. Wen done with the full training I get the following error:"Dataflash.GasGauging.State.UpdateStatus does NOT = 2. Impedance track...
View Articlebq27510 chemical selection and temperature measuring error
HelloI am trying create Golden file using bq27510 and BQ Evaluation Software ver.9.92, but had difficulties in several stages.Firstly I received message "Error: Could not find subclass and offset for...
View ArticleBq34z100 Control and Block commands
Hi ,I wanted to know about how control command and its subsequent 2byte sub commands retrieve data.We are considering a code to send command 1 byte at a time to fetch the data.So if suppose i want to...
View ArticleI2C Communication Confusion
Dear TII have a circuit board with the BQ34Z110 on board I can communicate with the BQ34 with the EV2300 and the TI software However I need to implement my own communication to the BQ with a host...
View ArticleParallel Cells using the TI bq-series ICs
Hello All,I am new to the TI bq series of battery management ICs. I have prior battery management circuit & software design experience.I have a high-current 12 volt battery pack application in...
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OCV value read
Hi,I'm testing bq27520G3EVM learning cycle with bqEASY. At the end of charge, FC bit is set. During relax, VOK is cleared but App Status never change to 01. Slua544 "Generate Golden Image" shows that...
View ArticleErrors in EVM GUI Software
Deat TeamI have installed the Bq EV software and it is communicating to the BQ34Z110 EV Board ,I can read the flash and the screen would update with the values in the device however when I click in a...
View ArticleLead-acid battery over-discharge protection - which IC to choose?
Could you advise me which of the TI's battery management ICs allow to do a simple lead-acid over-discharge circuit (6V, 1.2Ah one). For the charging control I plan to use BQ24450.
View Articlebq78PL116evm
HiI need a protector, balancer and fuel gauge for 12-16 Cells Li-Ion. bq78PL116 popped up when I searched for a chip on TI, but it seems that the evaluation module is not available neither on estore...
View ArticleBQ76925 EVM Calculating Offset and Gain correction
I'm having an issue with figuring out the gain and offset correction of the BQ76925 and how it's being calculated in the Evaluation Softtware. As far as I understand from the data-sheet the values are...
View ArticleBQ27425-G1, Is the CE Chip enable just for the LDO, or the whole device?
If I set the Chip Enable (CE) Low on the BQ27425-G1, will the rest of the device function? Does this just disable the LDO? Does it put the whole device into power saving mode?
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