BQ34Z100 - Writing Golden .gg file
Good morning all, I am working with a bq34z100 evm and am attempting to write the golden image file to the board in order to correct a calibration error. After importing the file and writing it does...
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BQ76940: Power supply and REGSRC pin
Hi, I would like to use BQ76940 for 12 cell battery with:- Cell nominal voltage 4.2V, Pack nominal voltage 48V (for 12 cell).- Cell maximum voltage is 4.7V and Pack maximum voltage is 56.4V.But in the...
View ArticleBq40z60
I am designing with the BQ40z60 but not using the cell balancing feature. I am concerned about the VCC on the chip (using an buck regulator off the 24V Adapter). If we don’t use the cell balancing, how...
View Articlebq27510-g3 Design Capacity at 4,1V
Hi everybody,I use 9600 mAh pack charged at 4,1V with bq27510-g3. I get a golden image with learning cycle at 4,2V and a second at 4,1V. This worked fine until SOH and TTE dramatically...
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BQ26220 Battery Manager RS232 Communication Lost
Hello,I actually use a BQ26220 to know the capacity of a non rechargeable battery.My problem is that the software use to evaluate the BQ26220 don't understand the answer of the BQ26220. I have a...
View ArticleBQ769X0EVM with EV2300: unable to detect a connected device
Hello,I tried to connect via I2c to the BQ76920EVM and BQ76940EVM boards through the EV2300 interface, but I always get the "unable to detect a connected device" error from the bq76940 evaluation...
View ArticleBQ78350 - Current calibration
We are trying to calibrate the current according to paragraph 11.2.5 in TRM. However, there seems to be some errors in this paragraph. Could you help me figure out how the calibration algorithm should be?
View Articlebq40z50: Advanced Charging Algorithms settings, if not used
Let me start by stating that I am NOT using the Advanced Charging Algorithm function for our product. But...For the Low, Standard, High, and Recommended temperature ranges, I've set the voltages to the...
View ArticleBQ2052 or equivalent for 9V Primary Lithium Cell
The only component I've found that appears to be appropriate for fuel gauging Lithium Primary single cells is the BQ2052. The absolute maximum VCC for the device is 7V. I need to gauge an Energizer...
View ArticleUnderstanding "Charge" and "Discharge" function of BQ76930EVM
Hello,I am brand new to the TI battery chipsets, and have been looking at schematic for the BQ76930EVM. I'm having trouble understanding how the charge and discharge FETs are meant to operate. To my...
View ArticleSuitability of BQ34Z110 for a small solar off-grid inverter
Hello,We are designing a small off-grid solar power system for single homes in rural areas. I'm considering using the BQ34Z110 for battery SOC monitoring, and I have several questions regarding its...
View ArticleInquiries regarding remained battery information on BQ27500-V120
Hello, allNow we have some inquiries regarding remained battery information on BQ27500-V120 from our customer.Please refer to the item below, and feedback us with your comment.We released our...
View ArticleNo acknowledge New SMBus Slave Address BQ78350
Hi,I use the configuration bq76940 + bq78350 for my battery management system. I have used the the optional resistor programmable SMBus Slave Address with R1=39K and R2=100K for REGOUT=2,5V, I get...
View ArticleActive Balancing using the BQ40z50
In looking through the technical reference, it references a document (SLUA420) for a circuit for Fast Balancing. This shows the circuit (roughly) to be used to increase the bypass current and speed up...
View ArticleCell Balancing Lines (VCxx) on BQ76930EVM
Hello,Looking at the BQ76930EVM, (Page45) I have a question.I understand that the VC lines switch between measuring the voltage (presumably presenting a high impedance input to the external balancing...
View Article2 x bq76930 stacking
hi, can i have 2 separate bq76930 to measure 20 cell battery ?i am designing bq76930 + mcu in single module which is able to log 10 hours of cell information, and export to pc with csv format, how if i...
View Articlebq34z100 DFI (Data Flash Image) locations
Hi.I'm currently working on bq34z100 and DFI. I've been able to successfully dump and flash a DFI using a uC.If possible, it would be great to have a "DFI to parameter" mapping, so that quick changes...
View ArticleBQ34Z100 Learning Cycle, FC not registering, single stage charger
HiWe are using the BQ34Z100 with 2 series Li-Ion cells (2900mAh).The charger we are using (I don't think it can be changed) is a single stage charger that cuts off the charge at 8.4V and does not do...
View Articlebq27421 - proper manufacturing process?
What is a suggested process for bringing a bq27421 design to production? It appears there are many ways to get there.1. Minimal one would be to just set the four things (Design capacity, termination...
View ArticleStand-alone usage of BQ40Z60
Hi,I have checked possibility to use BQ40Z60 in one of our future applications. It, however, is still unclear to me if it could be used as stand-alone charger / gas gauge after programming the flash....
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