2 cell li-ion protection
hiiI am working on BQ28550 which is a Single cell Gas Gauging ic I Want a Circuit for 2 Li-ion Cells Gas Gauging circuitRegardsTanvi
View ArticleLiSoCl2 gauging
Hello,I am looking for a fuel gauge for my batteries. They are primary single-cell and have a max. capacity of 19000 mAh. The cell chemistry is LiSoCl2. I have done some research and the one that seems...
View ArticleSource Code for BQMTESTER
Hi all,Please help me to get the source code for BQMTESTER software.Thank youThanh Phan
View ArticleBQ20z65-R1 Data Flash Write Problem
HI,I am trying to write to the data flash on a new battery design using the BQ20z65-R1 v1.05, but the aval software does not seem to be able to update the data flash. When I write to any of the...
View Articlebq20z45 current drawn when should be shutdown.
We have some interest in preserving cells in a pack that has been discharged and left for a bit of time. We discharged a pack of three LIFePo cells, that has one low capacity cell. After hitting the...
View Articlebq20z95 accuracy at different discharge rates
I am forwarding an inquiry from my customer. >>>> One of our battery packs uses a bq20z95 for fuel gauge. When we generate golden image file, we always use 0.2C rate to cycle the battery....
View Articlebq20z45 v 1.05 will not shutdown with command current is less than zero
The shutdown command is not working all the time for us. voltage is below charger present. current is below zero. We always have -3ma showing even after CC offset calibration and after fixing our...
View ArticleBQ34Z110 CHG Flag
HiI am using bq Gas Gauge Eval s/w bq34z110 v0.04Is it normal that, during a "Step 8 Optimization Cycle" on a 12V 7Ah Yuasa PbA battery, a few minutes after the Flags.DSG bit is set, the Flags.CHG bit...
View Articlebq78PL116 SMbus MCU programming
Hi Sir, I am designing a bq78PL116 based Battery management system. I want to use a microprocessor to control the BQ78PL116 by SMBus.Base on the reference...
View ArticleBQ20z65-R1 shutdown mode while PF
Hi,is there a way that the BQ20z65-R1 goes into shutdown mode although PF?Problem: after a permanent fail (e.g. CIM_A) occours, the bq20z65 does not go into shutdown mode and discharges the cellpack...
View ArticleThermistor multiplexing for multi-cell applications
I plan on using battery cell thermistor temperature monitoring as provided by many of TI's fuel gauges. However, I have a seemingly unique design where the cells (wired in parallel) will not...
View Articlebq27530 questions
In the bq27530 datasheet there is mention of the bq27530-G1 Technical Reference Manual. Where can I find that document? It looks like the BQ27530EVM comes with a EV2300 interface board, is that...
View Articlebq20z45 cannot command shutdown due to small indicated current draw.
We are not able to get a good shutdown with the shutdown command (x10) every time. The voltage is below charger present and the current is less than or equal to zero. Current is often -3mA. but it...
View Articlebq20z75 V160 DFI files......
Dear all,Are there any differences between the .DFI file that results from bqEasy - Setup - Read Dataflash (.DFI) and bqEasy- Calibrate - Review / Read .DFI except that the latter has the extension...
View ArticleBQ34Z100 & Primary Li-ion Batteries
Can the BQ34Z100 be used with 8S2P primary, non-rechargeable, Li-ion AA batteries (12 V @ 6 A) ?Will the Impedance Track S/W work with Primary batteries ?
View Articlebq34z100 and ev3200 communication error during battery charging
Hello,I am developing a 8 cell LiFePo4 battery pack using the bq34z100 evaluation module and are communicating with it over I2C using the EV2300 USB - I2C converter. The only modification I have made...
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BQ34Z100 Host System Calibration
Hi,I have a few questions regarding bq34z100 host system calibration. I would like to use host system calibration on BQ34Z100 instead of bq evaluation software in accordance to my project requirement...
View ArticleBQ24032A decoupling
Hi,Q1: Do I need any decoupling on the LDO output (PIN1) if I do not use it?Q2: Do I need any decoupling on the USB input (PIN20) if I use AC input (PIN4) only?thanks for help.best regardsBen
View Articlebq34z100
Hello,I am attempting to programatically configure settings on the bq34z100, and am running into a bit of a problem. I am using the subclass id's and offset values listed in Table 20 of the SLUSAU1A...
View ArticleBq20z80 Wake Up state
HiCan anyone explain what the "wake up " state is? And how can it be cleared, slua380 shows it on table 11 "state code manufacture status" but that is it. The battery is fine but I don't get the usual...
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