bq27425 and bqSTUDIO
Hi all, I have designed in a bq27425 and am looking to use bqSTUDIO to configure the part (Design Capacity, Term Voltage, Op Config, etc). To try this out, I bought the bq27425 EVM and the...
View ArticleBQ20Z655-R1 ALERT on temperature?
Hello,In the BQ20Z655-R1 datasheet (rev Aug '15), the ALERT pin is defined as "Alert output. In case of short circuit condition, overload condition and watchdog time out this pin will be triggered."Can...
View ArticleBQ24250 is giving continuous "no battery connected error"
I have a BQ24250 with 4.99V in, and a single cell connected. It is being driven in I2C mode at 100Khz.Single cell is at 3.65V.EN1 and EN2 are at GND536ohm resistor on ILIMI think this should be...
View ArticleBattery Management Studio & Chemistry Update ("target bqz container is old")
Hello all,I have Battery Management Studio 1.3.45 connected to a bq27541-G1 device. After changing the chemistry (Chemistry Programming tab, clicking on "Update Chemistry from Database") I get the...
View ArticleChemistry Data (with Battery Management Studio)
Hello all,I have a few questions regarding the chemistry IDs / database:- May I assume that chemistry data referred to by an ID stays the same? E.g. is the same data programmed into a device if I do...
View Articlechem file for bq78pl116
Hello,I have a bq78pl116 with LG18650-MH1. I haven't the 2064.chem file who is the chemistry file for the LG18650-MH1. I search into TI website and with a search into google but I don't find the...
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BQ20Z655 R1 V0.03 RSOC and Capacity Bug
We recently migrated a stable BQ20Z65 design to the BQ20Z655 R1, made the appropriate changes to the GG file, and are disapointed by the results.In particular, we are seeing major problems with the...
View Articlebq27532 Learning Cycle and use DesignCapacity
Good day.How should I run Learning Cycle and use DesignCapacity to obtain proper values of RemainingCapacity, FullChargeCapacity( ), StateOfHealth( ), StateOfCharge, etc. ?
View ArticleSubmit primary cells for ChemID characterization
I would like to send a set of cells to TI for characterization for eventual use with a bq27520G4. Is this possible?Thanks,Chris Casebeer
View Articlebq76PL536 TS formula
Dear Support Team I have question about formula in datasheet 16P. RTS=(REGMSB×256+REGLSB)/16548 About constant value of 16,548, normally it becomes 16.383 (=2^14), because resolution of ADC is 14...
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Some questions about Bq34z110 _I2C Write
Hi,I use STM32F215XX chip communicate with Bq34z110 chip through i2c.I follow the step in page 28 of slusb55b.pdfAnd I follow ,here is the step.1.Read PackConfiguration() : 0x961 .2.Write 0x00 to...
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bq40z60 gauge - cell balance time
It appears the TRM (SLUUA04B Revised August 2015) incorrectly defines gaugeStatus3. Only 24 bytes are returned, TRM says 32 bytes are returned. I need access to Cell Balance Time, where/how do I get...
View Articlebq27425-G2A EVM questions
Hi all, In general, besides Design Capacity, Design Energy, Terminate Voltage and Taper Current, are there any other registers I should be concerned with if I was to switch battery type in the GDK/EVM...
View ArticleBQ78350 LEDs current.
We are implementing the readout LEDs as in the evaluation module, in that schematic the LEDs are tied in the anode to a common node which is the emitter of a bipolar transistor in common base...
View ArticleProduction with TI fuel gauges
I'm evaluating several TI fuel gauges for a mobile product, including the bq27742, bq27441, system-side gauges, and bq27542 pack-side gauge. My questions regard what is necessary in production to use...
View ArticleBQ40Z60 4S pack bringup
I've designed a custom PCB with a BQ40Z60 for a 4 cell pack, and I'm having some trouble with the bringup and connection procedure. My schematic is nearly a direct copy of the suggested application...
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Please help. Some questions about Bq34z110 _ I2C Write
Hi,I use STM32F215XX chip communicate with Bq34z110 chip through i2c.I follow the step in page 28 of slusb55b.pdfAnd I follow ,here is the step.I get different datas from ' step (A) ' , ' step (B) ' ,...
View ArticleBMS manufacturer using bq40z50-r1
I'm trying to find a BMS manufacturer that uses this component in customizable BMSes. Can TI make a suitable recommendation?Thanks,Karl
View ArticleBQ27541-G1 Golden Image Programming
I am working on support to flash the Golden Image on a BQ27541-G1 for production. I am assuming that this app note slua504a.pdf, "Going to Production With the bq2754x", is the guide to accomplish...
View ArticleChoosing a ROM gauge to match Lithium Battery Chemistry
I am developing a product with a 3350 mAh Panasonic NCR18650B Lithium-ion battery (Chem ID 2012), and am trying to pair that with a gas gauge. I'd really like to avoid having a production fixture...
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