bqStudio Feature Request: Greater Log-Intervals
A simple feature request for bqStudio:Since the charge and discharge cycles are very long at my current project the Data Graph shows not much history because the greatest Log Interval is 5 seconds and...
View Articlesimple and clear bq40z60 manual or procedure?
Hello,Before posting an other (non-answered...) question on BQ40Z60 :Is there someone who wrote, and is ok to share, a procedure or manual for adapting default firmware for a custom board and batteries...
View Articlebq40z60 not charging, DSG = 1
Hello,I've made my own BQ40Z60 board, which is the same as BQ40Z60-EVM excepted the following change :- traditional fuse (no external burning)- no 2nd degree protection (BQ294700)- I want to charge at...
View ArticleBQ40Z60 application needs power when no cells are present
Hello, We are using the BQ40Z60 as the BMS for our portable application and we have some customers who would like to use our product with the power supply permanently attached. In this case we...
View ArticleBQ27425 Learning Cycle, Update Status = 0x34?
If I look at the data block summary for the BQ27425 it shows the Update Status register to have a default value of 0x34.I'm trying to go through a learning cycle of my battery and I'm finding that it's...
View Articlebq28z610 FETs Not Initializing
I have a bq28z610EVM board and I've been stepping through the setup procedure in the evaluation guidance document. The document says that the firmware is defaulted to a two cell configuration so I have...
View ArticleBQ78Z100 Spec 7.26 I2C and HDQ: pull down resistor
BQ78Z100 Spec 7.26 I2C and HDQ Interface I/O Parameter: Rpd=3.3K. Wondering about that, is there really a pull down resistor on Data or Clock port? Isn't that a typo?
View ArticleBQ78350-R1 - SMBus HostFETControl bytes are NAK'ed randomly
We are building a battery system which uses battery packs with a BQ78350-R1 controller. Accessing the SMBus registers in these batteries works fine except for the HostFETControl register (0x2b) which...
View ArticleBQ27426 configuration
Hi All,I'm using the BQ27426 in my new design. To understand what parameters i need to change i connected my BQ27426 to TI battery management studio.Im using a li-po 110mAh 3.7V battery. i have a few...
View ArticleBq27421 battery chemistry and fuel gauge chem id
Hi,What is the impact if i choose a wrong battery chemistry that doesn't fit with the chemical id of the fuel gauge.Thanks,likhitha
View ArticleFuel Gauge Part Suggestion - BQ27520-G4 a good choice?
I'm trying to pick a fuel gauge to replace my BQ24725. I need a part that is more flexible than this part that has a fixed CHEM_ID. I ran the Chem ID selection tool and found the BQ24725 has a 6%...
View ArticleBQ27621EVM detection.
We're doing some test and evaluation with the BQ27621EVM-G1 using Windows10 and EV2400.For the past two days everything was going fine and communication has been working. At end of day the EVM was all...
View ArticleNew CHEM_ID process and supported gauges
Is there a process to generate a new CHEM_ID for a custom battery?At the moment, I'm curious what fuel gauges would be able to support a custom chemistry?
View ArticleBQ78350 deadband setting
Hi,In battery pack based on BQ76930 and BQ78350, there are some current report under no load as below.Deadband setting is 3mA.1. What makes below current flow?2. if customer set deadband to 20mA, what...
View ArticleBQ34Z100-G1 reliability during long time without charging
Hi,We are currently studying fuel gauge solution suitable for important range (10Ah to 110Ah voltage 10V to 30V) of Li-Ion and lead acid battery et are very interested in BQ34Z100-G1 solution.I read...
View ArticleCHG & DSG pumps
Here are two “Pin Equivalent Diagram” in bq30z55 and bq40z50.– The former : CHG & DSG pumps are powered by PACK pin.– The latter: CHG & DSG pumps are powered by BAT pin.However, DSG pump of...
View ArticleADC resolution BQ34Z100-G1
Hi all!Do you know the ADC resolution of voltage measurement for BQ34Z100-G1?BRLoïc
View Articlebq34z100-g1EVM does not go to updateStatus 05 after 1st discharge in IT Enable
I want to complete a "clean" IT learning cycle. Knowing I had some incorrect params for my battery pack, I reprogrammed the bq w/ bq34z100_G1_v0_16_build_17.srec.Then:-> set the chemistry for...
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bq40z60 Charging stops at 3.2V (charging voltage 4.2V)
I'm using the bq40z60 on a bq40z60EVM-578 Evaluation Board to charge a 3300mAh Lithium Ion 2s1p battery pack.It stops charging at 6.4V (3.2V/cell) even though the charging voltage is 8.2V (4.1V/cell)....
View ArticleBQ34Z100-G1 EVM not acknowledging after flashing
Dear e2e team,I have been working with BQ34Z100-G1. We have a .srec file of already working BQ34Z100-G1. In that chip all the procedures and learning cycle is donesuccessfully.We exported that .srec...
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