BQ20Z95 with LTC4100-Ringing at the end of charge
Hi all,We are using bq20Z95 fuel gauge for a 4S3P battery, I noted there is a ringing (ON and OFF) charging at the end of charge (please see the picture attached for more detail). We use LTC4100 to...
View ArticleTest Automation for BQ20Z45-R1
Hi folks -I'd like to automate the testing of a product that includes BQ20Z45-R1DBTRWe have one of these:http://www.ti.com/tool/ev2300And our existing solution uses a manual process and BQEASY:...
View ArticleWriteSMBUSbytearray() function not working on BQ20z65-R1 for page 0x40
All, I'm trying to set the Permanent Fail CFG registers (1 and 2) to all 0xFFFF programatically using VB6. I'm following the appnote on the subject (SLUA379, rev D) almost verbatim except that instead...
View ArticleOutputting Individual Cell Voltages from the bq77910a to Monitor Cell Balancing
Hello!My team is working on cell balancing a 4-cell lithium ion and 4-cell lithium polymer pack with the bq77910a and was wondering if there was a way to output the individual cell voltages from the...
View Articlebq20Z45-R1 DSC Fet Drive Problems
Hi, I'm bringing up a new BMS design using a bq20Z24-R1. I am having problems with the FET drive. I can make the DSC FET turn on and off by writing SMBus Cmd 0x46 with the data 0x0002 to turn on and...
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Unseal Bq20z95
Hello,I currently work with the softwares BqMtester and the circuit Bq20z95When calibrating the BqMtester has sealed the circuit.Now what is normal, I can not read data from flash memory: I would...
View Articlebq208x and bq20zx unseal codes
please can you send me the unseal codes for bq2084;2083;20856/857 and bq20z45;20z40;20z60;20z65;20z70;20z75;20z80;20z85;20z90;20z95 gas gauge icsthank youreuben
View ArticleThe difference of BQ27510-G2 and BQ27510-G3
Hi Guys, I would like to know what is the difference between BQ27510-G2 and BQ27510-G3?Can anyone please help to advise.Regard'sJason.
View Articlebq32z110EVM PACK-, BAT- and system Ground connections
We're using the bq34z110EVM board.The I2C communication uses the Bat_minus as its reference point.At the load, only the Pack_minus is available, so that when using the communications at the load...
View Articlebq34z110EVM Design Steps procedure. Optimization Cycle problem.
Hello,I'm using the bq34z110.The battery is 24V, 12Ah Lead-Acid (12 cells).The chip correctly read the voltage and current of the pack. The number of series cells is programmed to 12.When I try to...
View Article"Non-host control" SMBus Charger System (w/ bq20z65-R1)
I've been using the bq20z65-R1 for quite some while as an in-system 3-cell LiPo protector - I am now however looking at adding an on-board charger to my design.After reading...
View ArticleFailing to write block data to NVM on BQ27425
I am having mostly great success with the BQ27425 on my board. The things I can do successfully include:- Read all of the RAM registers and get correct readings (e.g. battery voltage). I can also...
View ArticleBQ77908EVM Schematic
Do you have the schamatic available for the BQ77908EVM?What pins are recommended for programming the BQ77908?
View ArticleProblem! BQ34Z100 "Passed Charge" is resetting itself every 30 sec
Hello!I am on the step of Creating Pre-Learned Defaults in the document SLUA334B.I am trying to discharge LiFeYPO4 12V 60AH battery and following Data RAM changes. All looks OK, but after some reading...
View ArticleBQ29330 measuring individual series cell voltages
Hi,I am using the BQ29330 to manage a 3 cell Li-Ion Battery. I want to read out the individual cell voltages. In the datasheet it is recommended to calibarte the voltage monitor amplifier. I did that...
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BQ76PL536 EVM : false measurement result
Hello,I'm trying to implement a bq76pl536 solution on a 15s pack. I'm quite surprise to see that the result in the last chip are wrong with the evaluation software, like you can see below.Tensions...
View ArticleBQ34Z100 chem ID
I have been unable to match the chem ID for the cells I am using from Kokam. What is the process to get cells added to the database? I have factory fresh cells i can provide.
View ArticleBQ20z45 V500
Hello,We are designing a battery project using the BQ20z45R1 and have heard from our customer that there is or will be a new version 500 of the same fuel gauge. The V500 has an interrupt on pin4 which...
View ArticleBQ20Z75 Remaining Capacity, Remaining time to Empaty and Battery Voltage...
Hi AllI have very specific question Regarding BQ20Z75 Battery Management IC.Required Battery Pack Term Volatge is 7V. Which I have set in Term Voltage register.But when I discharged my battery using...
View ArticleError while calibrating bq20z65EVM with the bqEVSW program
I have the bq20z65EVM gas gauge and tried to use the bqEVSW program to perform the necessary calibrations. However, after I enter the measured values and hiot "calibrate" I get an error message. The...
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