bq40z50 VCC pin connection
In the bq40z50 design app guide (SLUA660a), section 4.3 the text discusses the use of a diode at the VCC pin and a 100 ohm resistor at the Pack pin, but the diagram below it shows a 100 ohm resistor at...
View ArticleWhere can I download bq20z40EVM firmware
Can anyone direct me to where I can find bq20z40 firmware. I purchased a EV2300 and bq20z40EVM but I can not find a firmware available to flash the Gas Gauge.Regards,Troyaaamills@gmail.com
View Article[BQ40z50] Manufacturing Status - read CAL_EN
Hello,for a fully automated test and calibration sequence I want to check the CAL_EN bit in 'Manufacturing Status' register.How can I access this register?For 'Manufacturing Status Init' I found the...
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[BQ40z60] discharge termination without apparent fault and cell balancing
Hello all,I try to do a learning cycle, but the discharge is stopped automatically before the threshold I choose, do you have any clues?All the flag not show are 0 except ITEN, on the last line.The...
View ArticleBQSTUDIO and bq27541-G1
Hello,I am trying to change the value of CC Gain and CC Delta in the calibration section of data memory on a bq27541-G1 in a battery pack. I am using BQSTUDIO and EV2400. After I send the...
View ArticleCycle count Bq34z100-G1
Hi all,Do you know what is the difference between parameters "Cycle count" founded in Configuration Class/ Data subClass AND "Cycle count" founded in Gas Gauging Class/ State subClass ?Regards,Loïc
View ArticleBQ27542-G1 , can I use this for Primary lithium-thionyl chloride (Li-SOCl2)
HiCan I use BQ27542-G1 , for Primary lithium-thionyl chloride (Li-SOCl2) for power management. I want to use 2 battery in parallel. how can I get the model for (Li-SOCl2).Thanks
View Articlebq40z50 r1 test mode
I am using now bq40z50 R1 in a configuration of 3 cells series (3*4.2=12.6 volts) (5400mAh cell), one thermistor (TS1), 2mOhm shunt resistor, communication with EV2300 over SMB; PRES pin is tied to...
View ArticleBest programmable gas gauge (for my application)
I have been wandering about the TI website, and youtube video channel, trying to wrap my head around battery management concepts, and I have come so far. We need a battery fuel gauge evaluation module,...
View ArticleBQ40Z60 New hardware: CHG_FET on, DSG_FET off so no battery action
My new hardware design is identical to the EVM and recommended application circuit in the BQ40Z60 data sheet. Specifically, the battery pack output feeds the CHG_FET and DSG_FET and then it's off to...
View ArticleBQ27621-G1 SCA/SCL/GPOUT pulled up to Vbat?
I am working on a project that has the BQ27621-G1 SCA/SCL and GPOUT pins pulled up via 10K resistors to Vbat (single cell 3.7-4.2V). We see the chip overcurrent/fail if Vbat connected to the board....
View Article[BQ40Z60] VOK error at the end of learning cycle
Hello all,I have this message at the end of the learning cycle, after the 2h relaxation time: Error: [VOK: Not Clear] The VOK flag is set and the Qmax values were not update...I use LiFePo4 battery and...
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bq40z60 stopped charging at 4.0V ?
Hi, Tom,My board using bq40z60 (designed based on EVM) will stop charging the battery before battery is full. I tested 3 times, all of them were stopped at around 3.9V or 4.0V. When the charging...
View ArticleDeveloping bq27510G3 in a simple system
Hi all,I am planning in integrating a bq27510g3 in a system that uses a single cell Lithium polymer battery. I have no experience with fuel gauge before so this is all new to me. I have an evaluation...
View ArticleBQ40z50 Production Programming
For mass production programming, there used to be (with the BQ20zXX devices) a need to load the binary rom file, rather than just the gg file, to ensure that various hidden constants were set.Is this...
View ArticleCoulomb Counter Integral Non-linearity
On the bq40z50 datasheet, the Coulomb Counter Integral nonlinearity is stated to be +/-5.2 (typ) and +/-22.3 (max) LSB.Two questions:1) Would it be accurate to say that the +/-22.3LSB error occurs...
View ArticleBQ34Z100-G1 Single Li-Ion standalone advice
Hello All,I am trying to build a single Li-Ion battery charger, and fuel gauge, that is totally standalone. I have 2600mAh batteries that I would like to use with random projects. I am looking at the...
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Based on BQ40Z60 connect to EV2400 test issue
Hi TI Supporter ,I have use TI EV2400 connect bq40z60 for test , I meet below issue .1. I want to know what's the means of the end of the Byte ? pls help to explain the spectrum show , I guess that...
View ArticleBq34Z100 : CC Delta limitation
Hi all,I have a problem, I'm using a high current system with I > 32.767A. So I have a Shunt resistor with 3.3mOhms value. After current calibration I have CC Gain = 2.827 and CC Delta = 2.822.After...
View ArticleBQ34Z100 to BQ34Z100-G1 conversion
Hello AllOne of our customers has an issue"Some information to begin the migration procedure towards the -G1 version. 1- It seems that the FlashStream tool needs to reprogram the Flash memory....
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