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BQ27520-G4: bq27520-G4 is damaged when BI/TOUT pin is shorted to VSS?
Part Number:BQ27520-G4Hi,Now my customer simulate failure case when each pins are shorted due to soldering failure. Specifically will bq27520-G4 be damaged when BI/TOUT pin is shorted to VSS? I know...
View ArticleBQ20Z75-V180: BQ20Z75-V180 shows incorrect SOC on a fresh pack
Part Number:BQ20Z75-V180I have a pack model using the BQ20Z75-V180 and Panasonic UR18650A cells. Packs in previous builds would "wake" at around 50% RSOC. Panasonic is now shipping these cells to be...
View ArticleBQ33100: BQ33100 with EV2300 firmware flashing
Part Number:BQ33100I would like to know the firmware flashing procedure when flashing a srec using the bq gas gauge evaluation software. When on the pro screen, I pick my file, hit program and receive...
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BQ34Z100EVM: bq34z100evm zero state of charge
Part Number:BQ34Z100EVMHello,I am running bqStudio (version 1.3.54) on a 64-bit Windows 7 PC. I have the PC connected to an EV2300 (version 3.1r) which is connected through I2C to a bq34z100evm...
View Articlesupply current of sleep mode in bq40z50r1
Hi, AllIn my case, the supply current of sleep mode is a little bigger the spec. Â When the Chg_FET=On % Dsg_FET = On, the current is about 120uA. Â In this situation, the typical value in spec is about...
View ArticleGPCCHEM: Accuracy Error - Are LiFePO4 chemistries included in the calculator?
Part Number:GPCCHEMMy company has been building a gas gauging circuit utilizing the bq34z100-G1 chip for the last year for our LiFePO4 battery. Early on I worked with Tom Cosby and based on our logged...
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BQ27421-G1: BQ27421-G1A: the warning messages in bqStudio
Part Number:BQ27421-G1About the TI BQ27421-G1A gauge IC on the PCB.A, we generated the golden image (*.gm.fs) based on the *.gg file with bqStudio.1) When we import the *.gg file, the bqStudio...
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BQ40Z50-R1: bq40z50-R1 / VSS pin connection
Part Number:BQ40Z50-R1Hi,This may be basic question about battery pack. Basically VSS pin is connected to cell -, but in this case, the supply current of bq40z50-R1 is not flowed sense resistor so...
View ArticleBQ27421-G1: BQ27421-G1A: the generation of golden image
Part Number:BQ27421-G1About the BQ27421-G1A, as we know, the procedures for the generation of golden image (*.gm.fs) are listed as follows:1) The procedures for the generation of golden image (*.gm.fs)...
View ArticleBQ27510-G3: DFI flash flow during production
Part Number:BQ27510-G3Hi everyone,I'm currently preparing the necessary steps for flashing the bq27510-g3 during production. We want to flash the derived DFI file from future learning cycles with our...
View ArticleBQ34Z100-G1: problem with optimization cycle
Part Number:BQ34Z100-G1Hello, I just ran my first test optimization cycle, but I noticed the OCVTAKEN bit in the Flags register did not set after the first charge cycle (see step 4 below). It was later...
View ArticleBQ27426: Clarification on BlockDataChecksum
Part Number:BQ27426Hello,I'm trying to get the RAM save/restore code for the BQ27426 working (in particular, I'm trying to store the State and Ra subclasses to nonvolatile memory, and then write them...
View ArticleBQ34Z100-G1 Learning Cycle - Learned Status won't update to 0x05
Part Number:BQ34Z100-G1We have been following the learning cycle as described in a previous post. We are able to fully charge our pack and the OCVTAKEN flag is set at which point we start the discharge...
View ArticleBQ27426: Inconsistencies on the TRM
Part Number:BQ27426Hello,I'm trying to set my custom values for certain fields, such as the Design Capacity, Design Energy, etc, but I just encountered an issue.On the Technical Reference Manual...
View ArticleBQ27421-G1: BQ27421-G1A: remove the checking of version in golden image
Part Number:BQ27421-G1We used the TI BQ27421-G1A gauge ICs in our product.And there are 2 F/W versions (0x0108 and 0x0109) of gauge ICs on the PCB.As now.Q-1) If we remove the checking of F/W version...
View ArticleBQ40Z60: Cycle count
Part Number:BQ40Z60Hi,In the BQ40Z60 the preset for the cycle count is 90%. Does this means it needs to see a delta of 90% in the learned capacity, for example charged up to 95% and discharged to 5%,...
View ArticleBQStudio shows incorrect cell voltages with Simulator off
Hello,i am trying to get BQStudio to work with my BQ76940EVM and EV2300. So far I am getting progress on how to communicate (boy, is this difficult...) with the board. Right now i am encountering the...
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BQ78350-R1: BQ78350-R1: Calibration Problem
Part Number:BQ78350-R1GreetingsSo, I'm trying to calibrate my BQ78350-R1 using Battery Managment Studio, but i've confronted problem.While reading ManufacturerData() I can't properly read any cell...
View ArticleBQ40Z60: What delays needed when writing to the Data Flash of BQ40Z60/BQ40Z50?
Part Number:BQ40Z60What delays (us/ms?) are needed between writes/reads to the data flash of the BQ40z60/BQ40Z50?I am using Linux I2C SMBus to access the Battery Manager. We are having issues reading...
View ArticleBQ27411-G1: Update of resistance in the field
Part Number:BQ27411-G1Our product uses a bq27411-g1a gas gauge to monitor a Li-Ion battery. I have set the gauge's parameter according to our application and successfully performed a learning cycle...
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