BQ27421EVM Documentation and BQ27421 Ref Manual Data Memory Discussions Don't...
The bq27421 Data Memory descriptions in these two documents are inconsistent. As an example, the EVM document includes parameters Min Taper Capacity and Current Taper Window for the Charge Termination...
View ArticleUsing bq34z100 on a 12V AGM VRLA Battery
Hello,I recently performed the ChemID procedure as outlined in sluc138 and would appreciate a confirmation on which ChemID to use. Please find the log file attached. The battery I ran this test on has...
View Articlebq40z50 BAL_EN flag
What mechanism sets and clears the BAL_EN (1 = Cell balancing is possible if enabled) flag in the GaugingStatus register?Thanks.Tom
View ArticleI Have a Lithium Polymer Cell (8000mah) That I need to enter into the BQ...
Good Day!,I am currently using the BQ78PL1116 and I can not find a Lithium Polymer 8000 mAh cell file for that chemistry type. The Cell chemistry is a LiCoO2 which is very common but most of what I...
View Articlebq34z100 20% led never turns off
Hi,We are using bq34z100 gas gauge IC for 4s2p liion cells. I am facing a problem that 20% LED never turns off even when SOC becomes 0% and BAT-LO gets set. I have done the optimization cycle and gas...
View ArticleBQ34Z100-G1 voltage limitations
Dear all,it is written in the BQ34Z100-G1 product features and datasheet that the limitation of this IC is 65V.since the voltage sense is from a resistor divider, what is the reason for this...
View ArticleSM Bus Device Address of BQ40Z60
Hi,We would like to communicate from an external micro with the TI BQ40Z60 chip using SMBus.What is the SMBus device address of the TI Chip to access the remaining charge register?Regards,Vasanth
View Articlebq34z100-g1 - Optimization Cycle
We plan to use the bq34z100-g1 with a lead acid battery . We followed the 9.2.2.1 Step-By-Step Design procedure (Bq34z100-G1 datasheet) and run an optimization Cycle (9.2.2.1.8) as described in...
View Articlebq34z100-g1 - IT_ENABLE
We plan to use the bq34z100-g1 and are running optimization cycles using the bqStudio software. The SLUA334B (optimize manual) describes to send the IT enable command (0021). We noticed that after...
View Articlebq34z100-g1 - Chemical ID
At 9.2.2.1.6 in the bq34z100-g1 datasheet the Chemical ID must be set, we used 0805 as ID.1) Which Data Flash registers are set by selecting a Chemical ID?2) Must/Can the Device Chemistry register...
View ArticleBQ27541/542 for 2 cell batteries
Dear Sirs,Need your experience sharing !May I know how could BQ27541/542 used in 2 cell 8.4V (2S1P) ? Many thanks !
View ArticleBQ20z45 Calibration
I am currently using the BQ20Z45DBT-R1 IC for management of a 4-cell battery pack. As we near production of the product this is on, I am going over what will be necessary for test and calibration of...
View Articlebq40z50 VOK set and clear conditions
Trying to do a learning cycle on a new PCB and new cells. VOK never got cleared after fully charging. What are the conditions for VOK to be cleared? Log shows it relaxed for over 18 hours.Thanks.Tom
View Articlebq40z50 BatteryMode()
Bit 0 in the BatteryMode register is ICC, Internal Charge Controller. Is this used in conjunction with bit 14, CHARGER Mode? What effect would it have if it's set, but CHARGER Mode is set (disabling...
View Articlebq34z100-g1 - Chemical ID Change
Hi,How do I change the chemical ID from default "li-ion" to default "LIFEPO4"ThanksNick
View Articlebq3060 Sleep Mode
Hello!Can anybody talk me how I can set [NR] =1, to leave CHG FET working in Sleep Mode.In Datasheet says:The bq3060 device enters SLEEP mode when the following conditions exist:• If [NR] bit is set to...
View ArticleMax current limitation - bq40z60EVM
I'm going to design some Battery Management System (my first BMS project) for 4 cell, 14.8V, Li-Ion pack and decide to use bq40z60. I would like to use bq40z60EVM schematics and PCB layout but in the...
View ArticleEvaluation Software for BQ34Z100-G1
Hi all,We are using battery monitor IC BQ34Z100-G1 in one of our designs.We want to do the calibration and optimization of this fuel gauge. There are Evaluation softwares available for other versions...
View ArticleHow do I set BATLOWEN on the BQ27441-G1?
I'm having some trouble setting the BATLOWEN bit. I find that I get the expected default value of 0x25F8 for OpConfig when I read registers 0x3A and 0x3B. When I try to set the BATLOWEN bit (bit 2)...
View ArticleBq20z Software - BQwizard
Hi, Is it possible to use TI SW (BQwizard) at two different Windows at the same PC? BR, Rotem
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