bq20z90 shutdown mode
I am having a problem for which I cannot find information in the TI documentation. Our customer has an application where his equipment shuts down when the pack charge level drops below a certain...
View Articlebq20z75 Problem Setting Cell Chemistry
I'm following the steps I've read here for creating a golden pack. I have cycled the pack and let it rest for more than 5 hours. I downloaded the gg file, reset Cycle Count to 00 and Update Status to...
View ArticleBQ28550 - reading & writing Flash
Dear TI,we use BQ28550 in a 1-Cell application.I wrote a Visual Basic program to read out the Golden Flash an write it to an other device.i use the function from BQ20z95 application notes.Here is the...
View Articlebq34z110 update status
Hi all,I've some questions regarding the optimization cycle in bq34z110. I'm using bq34z110 fuel gauge for 6V, 5Ah Lead acid battery.1. Is Cell BL Set Volt Threshold be changed during optimization...
View ArticleCell balancing with bq77908A
I am trying to understand the voltages and power ratings associated with the external resistors that connect to the VC1-9 pins of the bq77908A. The data sheet says balancing current must be held to...
View ArticleMay I reset during bq34z110 optimization cycle?
I am running the optimization cycle now for bq34z110 gauge to work with 12 V 7200 mAh Lead Acid battery. The optimization is a long process and there may be errors during it. I'd like to write some...
View ArticleDetermining Chemistry ID for lead Acid Pack
Dear Ti TeamI have reached the state where the Hardware and the I2C communication to the BQ34Z110 is functioning.I have a test vehicle with a lead acid battery pack and started to configure the Flash...
View Articlebq20z45 controlling the SMB-charger bq24707A or bq24725A.....
Dear all,I am testing a setup of bq20z45-R1 controlling the bq24707A - or the bq24725A charger which is meant to be a design where the gas gauge module are controlling the charger without a host. I...
View ArticleHow to get CHEM-ID and DFI with BQ27531??
Now I am using Bq27531 and Bq24192 chipset to control the battery in my project, duing the development, I have some questions :1, How can I get CHEM-ID use the Bq27531 EVSW?? There is no BYEASY button...
View ArticleBQ33100. connect more than 5 ultracapacitors
Hello, I will start to use the chip bq33100. i received 3 free samples of this chip.I know that I need the Super Capacitor Pack Manager EVM (BQ33100EVM-001) and the interface boardEV2300 EVM to...
View ArticleAbout BQ20Z95 INIT Flag
Hi all,I'm started to develop a gasgauge with BQ20Z95, but I don't have an EVM.So, I communicated with BQ20Z95 by micro controller, and communication is worked already.My question is a behavior about...
View ArticleBQ34Z100EVM Calibration
Hi,I'm using the BQ34Z100EVM with the EV2300 evaluation module to develop a battery monitoring system for a 12V, 40AH LiFePO4 battery. The BQ34Z100EVM board is set up for Multi Cell operation, with...
View Articlebq34z100 pin2 Ven weirdness
So after running an initial lot of a battery with bq34z100 fuel gauge I have one piece that is displaying some weirdness, I have 0V on pin 2 Ven, checking dataflash its showing a battlow, and measuring...
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Own BQ27510 not matching EVM
Hello,I am using the BQ27510 Evaluation module but also constructing my own prototype board board which is smaller and can be attached to another board. However I am experiencing difficulties in...
View Articleabout golden pack of BQ27500-V130
I am using BQ24032A& BQ27500-V130 at our product, BQ24032 for charge and BQ27500 for faul gauge . Now there are some questions:1. I need to make our golden pack , should I do it on our user board...
View ArticleBQ2084 V143 calibration
Hi,I would like to keep "CC Delta " and " Remaining Capacity" values after calibration.Currently, this values are reset after diconneting the battery from the gauge more than one minute.How to avoid...
View ArticleAbout BQ33100EVM
Hello,I bought two bq33100EVM to do a supcap balance project. I have few questions about it when dig it.1. How can I know my bq33100evm is sealed or unsealed package? Because I tried to read SMB...
View Articlebq20z45 evm blocks charging current
I have the bq20z45 evaluation module. I connected it to my battery pack and a DC voltage supply to see how much current will be drawn for charging the battery pack. The test points of the evm (2.5Vreg...
View Articlebq20z45-R1 OCA Not Setting when RSOCL = 1
HiI am having a problem getting the OCA to set on a BQ20z45-R1 based battery when RSOCL = 1. It seems that because the RM and RSOC are limited to 99% until a valid charge termination occurs that the...
View ArticleTime to wait for voltage calibration of bq20z65
Hi,In document SLUA409a (p.1), we can read : "Note that due to digital filter settling time, full accuracy of reported voltage is reached 5 minutes after calibration. Only after this time, comparisons...
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