GG import with errors
Hello,I use bq20z75-v180 with EVSW bq20z75 v1.81.After setting values in DF to appropriate and calibration, I exported DF to GG file. When I import the GG file to load data to another bq, I receive...
View ArticleBattery Gauging - Basic proceeding - chem ID
HelloI'm working with the BQ27510 (EVM and on a prototype System), EV2400 and the Gauge Studio.My System is working so far but I got some basic understanding problems.- I wrote the Chem ID of my Batt....
View ArticleBQ34Z950 BQEVSW
Hello,As the BQEVSW is not listed on the product page for the BQ34Z950, please provide a link for download.Thank you.
View ArticleI2C read only returns random data
HelloI try to read Voltage from a BQ27421, but it only returns random data it seems. I use address 0xAA for writing and 0xAB for reading. When I try to read the Voltage register I send 0xAA 0x04 over...
View Article.bqfs programming, set full access unseal key in bq27510-g2
Hi All,I had tried to program the FG using .bqfs. The unit is sen into ROM mode and then followed by the commands in the bqfs. We are using C# for the programming and the USB to I2C communication using...
View Articlereprogramming bq34z100 without board-level calibration
We're using the bq34z100 to monitor a third-party battery pack. The battery has its own charging and protection circuit, so the primary value of the gas gauge is determining the remaining battery...
View ArticleBQ783xx
Hello,In the BQ76920 datasheet a Companion Controller IC BQ783xx  is mentioned.I cannot find this product family (BQ783xx) in the catalogue.Please provide a link to the aforementioned device.Thanks!
View ArticleHow to set BQ33100 design capacitance?
Hi all,The datasheet doesn't introduce the usage of this parameter. The documentbq33100 Super Capacitor Manager - Top 10 Design Considerations just tell us to set this register to the same as the value...
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Are the I2C signals SDA/SCL powered by the 1.8V LDO on the BQ27621?
I would hate to assume they are powered on 1.8V and then need a voltage translator.
View ArticleEV2400 Custom software
Hello,Our company is going to use EV2400 to interface bq34z100 gauge with PC computer (using as interfrace I2C-USB). As long BQ evaluation software works fine for configuring and monitoring, our clinet...
View ArticleBQ27421 I2C confusion
Hi everyone,Could someone please help me provide me a small code snippet on reading the Device Type using the Control command and its sub-command? Also for putting the device to Shutdown? or even a...
View ArticleI2C/SMBus commands for bq40z50
Hi community,I wanted to know about how to fetch data from the bq40z50 with I2C commands.At first, most important for me is, which slave address the bq40z50 has, to be addressed by a microcontroller. I...
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 does not respond to I2C
Hi TI experts,BQ76940 does not respond to any of the I2C commands. According to the oscilloscope traces, it does not generate ACK signal. (bus is not pulled down in the 9th clock cycle)I have double...
View ArticleBQ2040
Hi ,I am using the BQ2040 with a two cell Li-Ion battery. Recently we have had some problems with indication LEDs as they show incorrect information about the status of the cells:The following are the...
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bq27621-G1 gas gauge suitable for 50 mAh lithium polymer battery?
Hello,Can the bq27621-G1 be used as a gas gauge for a 50 mAh capacity lithium polymer battery? If not, can you recommend a gas gauge that can?The parametric search shows all gas gauges having a minimum...
View Articlebq27510-G3 downgrade to G2 firmware
All,We are proceeding with the manufacturing of our product and initially, we had bq27510-G2 however, due to the time schedule and the availability of G2(out of stock) from our supplier, we had decided...
View ArticleBQ34Z110 optimization at less than C/10
Hello,We have a large battery bank (110Ah 24V) which will see a typical load of 2.5A, max of 4A and our shunt is designed for 5A.To run an optimisation cycle, everything says we should use C/10 which...
View ArticleTesting bq20z65 R1
Hi,I'm developing a test bench for PCBs using bq20z65 and I apply a constant voltage and a separate current for simulating a battery. I have a test to simulate overvoltage and undervoltage : I apply a...
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