sharing the thermistor between gas gauge and charger
Hello- We plan to use the BQ24050 charger with the BQ27200 gas gauge (system side). Is there a way there two device can share the thermistor in the battery? Thanks!-Tim Starr on behalf of VC@AR
View Articledistributed BMS
We are looking to develop a new distributed BMS for long strings of batteries, upto 200 cells. as used in EVs. Each cell will use a module with A/D capability and a unique ID , this will be available...
View Articlebq34z100 minimum sense resistor
Does anyone know what the minimum supported sense resistor is for the BQ34z100?Calculations based on the data flash show CCDelta can only be as small as 4 mOhms, but this is giving me issues. The TI...
View ArticleMinimum drive current out of the BQ29330 n-channel FET driver pins (chg,dsg)
What is the minimum drive current rating out of the n-channel FET drivers (chg,dsg) in the BQ29330?My interpretation of datasheet spec for max rise time to ≥18V of ≤ 1000µs into 4700pF. By calculation...
View ArticleBQ26500
I am Working on BQ26500 Which is a Coulomb Counter IC.Using it for 2s Li-ion battery in pos application. I am using a 2s IC S8242 AAY i.e SEIKO IC and a protection fet S6968 with it. I am facing...
View ArticleBQ20Z95 EVAL KIT
Hello, I am working with a BQ20Z95 eval kit. I was getting a USB time out and thru driver re-installs, that has now changed to BQEasy reporting it does not recognize the device. It does acknowledge the...
View Articlebq34z100 Alert pin problem
I am working with the bq34z100 demo board and I believe I have discovered a problem with using the alert pin.The trouble is that the alert pin will only go low for some of the alert flags but not...
View Articleis it possible to disable 1st level protection in the bq20z45
I have an application where the customer wants us to not implement a discharge FET. I've tried to disuade them but they are adamant.Since there is no discharge FET I would rather not have any discharge...
View ArticleOver Current Charge protection, BQ20Z95 V1.50
Hi all,I have a problem with Over Current Charge protection and would need help from you. The device I use is BQ20Z95 V.150.I set the OC (2nd tier) Chg to 7000 mA and OC (2nd tier) Chg time to 2...
View ArticlebqEVSW will not recognize my EV2400
Brief summary of my problem: the bqEVSW I am using will not recognize my EV2400.I have already been able to successfully use an EV2300 that I am borrowing from a coworker and have tried, as many of the...
View Articlehow to measure alkaline battery capacity and voltage
hello. everyoneI want to determine alkaline battery capacity and voltage using TI's gas gauge ICs.But I don't see which gas gauge IC appropriate for my purpose.pls show me that ICs.thank you very much!
View Articlebq34z100 problem with bqChem in evaluation software - will not show chemistry...
Hi there,I've looked at other posts about this, but my problem appears to be slightly different. Within the bq34z100 evalution software, the bqChem tab tells me it cannot find the bqCHEM.ini file,...
View ArticleError code 2 when programming .bqfs file to BQ27500
Hello,I'm trying to write .bqfs file to BQ27500 gauge. It seems that I can read values in ROM mode. Unfortunately writing is blowing up all over the place. So I manually did all the startup writes and...
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BQ34Z100 GG Mode Error
I have a bq34z100 chip in an original board design and am experiencing issues with the gas gauge mode. The chip calibrates correctly for voltage and temperature, but gives me an error when I try to...
View ArticleUsing Labview with the EV2300 and BQ80XRW.dll
Greetings all, I'm trying to replace VB6 test programs with Labview based test programs, but I'm having difficulty getting the software to communicate with the packs. I'm using Labview 8.5 for the time...
View ArticleBQ2060 - Wrong Remaining Capacitance counting while charging but OK while...
Hello all,I'm working with a battery pack 4 cells lithium in series and total capacity 3000mAh.Pack is controlled by BQ2060 IC and the problem I see is the Remaining Capacity estimation while charging...
View Articlebq78PL114 and LiFePO4
We designed 2 years ago a LiFePO4 battery pack (10Ah/3.2V/12 cell). We did several third party tests (CE, FCC, UL, UN tests) on it and got the correct approvals.However, under some occasions we noticed...
View ArticlebqEVSW 0.9.88 has no bqEASY button
I want to try the bq27541 with the new G1 version (V2.22 chem file)At the bqEVSW version 0.9.88 there is no bqEASY button on the left side.Can you check it and tell me the result?
View ArticleGauge Studio
Hi,the Gauge Studio is not communicating with my gauge.I use:EV2300-002The Gauge Studio read: EV2300a Version: 3.1r.When I connect the Interface without the gauge.If I connect the gauge over I2C then...
View ArticleNeed Battery protection IC for Lithium phosphate
Hi,customer is using BQ24620 for charging Li phosphate , also they are looking for battery protection ICs.i have proposed BQ77190A , As it is mention in BQ77190(obsolete) as all li ion systems...
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