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BQ33100 capacitance measurement more than 10 times capacitance
Hi,I used bq33100 EVK board and EV2300 to measure super capacitor stack's capacitance ( 5 pcs 22F/2.7V super capacitors series). In thoery, its capacitance should be 4.4F.But, I got below value: 43.5F...
View Articlebq20z65: Wrong RSOC after wakeup from shipping mode
Dear expertsWe just produced new battery packs with bq20z65All BMS boards are programmed with DFI File which contains learning gg-file and all other values like keys and so on.Also calibration was done...
View Articleli-ion battery parallel cell fuel gauge
Hi, I'm designing a Li-ion battery charger and its fuel gauge for robots in a company.The Li-ion battery consists of 4 of 2600mAh Li-ion battery cells. I mean 4 in parallel.I found a charger for it and...
View ArticleBQ20Z95 Control FET (OC 1st dsg)
hello,My question concernsthe control of thedischargeFETwhen the conditionsOC1STTIERDSGoccures.On my boardwhenthe discharge currentexceeds thethresholdOC1tierdsg, we observe something like acapacitor...
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Bad capacity prediction and rough temperature/current correction with bq34z100
Hello. I trying use bq34z100 with 4-parallel NCR18650 Panasonic (2900ma) battery set, but after testing got very bad results. Please check my records, maybe you can give me recommendation for improving...
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bq34z100 evaluation software for sending commands
Hello!I need to send specific commands to the bq34z100 accordingly to tables 2 and 3 of the datasheet. I'm trying to do that by using the I2C PRO page of the "Texas Instruments bq Gas Gauge Evaluation...
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bq20z95 I2C arbitration problem
Hi,it seems that the bq20z95 in my system generates a START condition in the middle of a transfer conducted by another master.In this example, my i.MX6 CPU tries to address slave device 0xD0 register...
View ArticleChemID Suggestion for Sony 2.49Ah cell
Hello,I have a new project that would use the Sony 2.49Ah Li-ion cell US434197H3. I searched the Chem Updater Excel sheet and couldn't find a close Sony match.Is there a Chem ID available?
View ArticleUnseal bq33100
What is the unseal key for the bq33100? I've read the 0x60 address and I have what I think is the default key. However when I write both words to 0x00 the SS flag does not toggle.EDIT: I'm able to...
View ArticleBQ20Z95: how to implement SMB with I2C?
Hello everybody,suppose you have a Cortex-M4 micro that you want to connect with a TI BQ20Z95 fuel gauge. I could use the I2C port to establish the communication, but have no idea of how to implement...
View ArticleDifference between BQ2013H and BQ34Z110
Hi, I was wandering what was the best chip between the BQ2013H and the BQ34Z110 for lead acid battery use. I am working on UPS (un-interruptible power supplies) applications.I get the feeling that the...
View ArticleBQ28Z560EVM. J8 (USB Connector purpose)
Hello, everyone!Please, clarify which purposes has J8 on BQ28Z560EVM?Thanks in advance/
View ArticleBQEasy SW des not detect EV2300
I just installed the BQEasy software for bq20z75 chip set. When I run the app, I get "The EV2300 connection could not be initiated! Please close program and try again".I have the ev2300 connected to a...
View ArticleProblem connecting EV2300 on Windows 8 OS.
It does not work, period.What I do not understand is how is TI selling this machine, knowing that there is a problem with this unit. I scanned numerous post, not a single time, there was a solution...
View Articlebq40z50 external cell balancing
In Fast Cell Balancing Using External MOSFET (SLUA420), the example uses a bq29330, showing a connection for Cell 1 negative going through an Resistor/Capacitor filter to a pin on the 29330.The 40z50...
View ArticlebQ34Z100 Alertpin Type , Is this open drain or CMOS spec at Alertpin mode ??
Hi I have some question for BQ34Z100 pin spec.This device has P5 as Alertpin ( *same as HDQ line). Question Is this Open drain or CMOS at Alrertpin fuction?? ( Mode3 P5 ) RegardMarch...
View ArticleEV2300 Compatibility
Need to test the TI fuel gauge IC, bq27541, and plan to use the EV2300.Is the EV2300 compatible with Win7 (x32 and x64)?
View Articlebq3060 sealed by mistake
Hello,while learning step by step the bq3060 TechRef, I entered 0x20 in SBS Manufacturer Access and hit "Refresh".It works, FAS and SS flags are set: Bravo! The gauge is sealed. No way to unseal it by...
View ArticleChemistry Identification - appended log files
Hello everybody,I'm using bq20z95EVM to evaluate the right chemistry ID for my LiPoly, 1p3s, 2000mAh, 3.7V battery pack.1) I've tried to modify the entire log (book1.xlsx)(Please visit the site to view...
View ArticleSystem side gas gauge for user programmable chemistries and capacities
Hello Everybody,I am designing a new DC-UPS with external batteries, and I'd like to keep track of their SOC. Some of those batteries (LiFePO4, LiCoO2) will have a BMS with integrated bq40z50 (IT +...
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