what is different of bq27510 & bq27426?
Hi!I am looking for system side fuel gauge IC for Li-ply battery.what is different of bq27510 & bq27426 on battery monitor?What is adv. & disadv. of higher side & lower side current...
View ArticleWriting a golden image file to bq27742 without using TI software
Hello,I want to write a golden image file to the bq27742. However I cannot use TI software because the device is only accessible through another device.Is there any documentation of the protocol for...
View ArticleBQ27GDK000EVM User "Guide"?
Ok I have the two user guides for the BQ27GDK000EVM: SLUUB24 and SLUUAO1A. But neither really walks a customer through what is necessary to use BQStudio with it and characterize a battery well enough...
View ArticleBQ2060A as HDQ test device?
Hello,We are developing a test PCB / fixture for a device that includes an HDQ interface to a battery that contains the BQ2060A gas gauge. We would like to design into the test PCB a method for testing...
View ArticleBQ27010 Initialization
Hi How to initialize bq27010?is there any sequence of commads?Thanks in advanceJoseph.D
View Articlebq20z75 V.1.60 - does differences in cell voltage affects the shutdown...
Dear all,We are still using the bq20z75 V.1.60 in a 4S4P LiFePo4 battery appilcation and it works OK. During the last year I have noticed some faulty battery packs where some of the cells are...
View ArticleRecommended charger to partner with BQ76930 & BQ78350 - LiCoO2 8S3P
I think I got most of my question in the subject line.Essentially I'm looking for a charger that can accept charge parameters from bq78350 and set charge current / voltage as appropriate. Does TI make...
View Articlebq40z60 - Chemistry ID selection
Hi,I need to know how I can determine the Chemistry ID for thew bq40z60 of a custom Li-Ion high discharge current battery.The Battery is not in the Database so I will most likely have to characterize...
View ArticleBQ27421 production process and initial capacity estimation
Hi,I have design where BQ27421 is used for FG purpose. Could you please describe optimal production process in order to skip lengthy learning cycle?Twenty hours per device is not acceptable for our...
View Articlebq27742 calibration
Hi,what steps are required in order to calibrate a bq27742 in production?In the technical manual, it says:1. Perform CC Offset. 2. Perform Board Offset. 3. Perform Current Calibration. 4. Perform...
View ArticleBQ27530-G1 Update Status doesn't go to 1
Hello,i do the learning cycle for the Fuel Gauge BQ27530-G1. The Update Status doesn't go to 1 and Qmax doesn't updated.I discharge the battery to 3.5V (Terminate Voltage). Then i wait for 5 hours, at...
View ArticleBQ34Z100-G1 Optimization Cycle
Hello,I am using BQ34Z100-G1 to monitor the state of charge of a bus battery. The battery is 225Ah with max current of 1200A, although in practice it does not go beyond 300A. It is a 12-cell lead acid...
View ArticlePanasonic NCR18650BF, which chemistry ID?
Hello,we want to use a Panasonic NCR18650BF in our battery pack. However I noticed there are two chemistry IDs for this cell: 2039 and 2050.Does it matter, which one we use? Are we required to use the...
View Articlebq40z50 / how to update tobq40z50
Hi all.I installed update to bq40z50-r1 file(.srec file) using EV2300,but I couldn't program bq40z50-r1 srec file to bq40z50 EVM.Please tell me how to update.If you have the document, please give me.I...
View ArticleBQ274xx Linux driver Default Design Capacity register?
Hi,Default Linux driver updates Design Capacity register(offset 10) and Default Design Capacity (offset 14) remains unchanged. To me seems logical that both register should be initialized to same...
View Articlebq27421-g1 (remaining capacity and full charge capacity errors)
Dear contributors,We have currently an issue with this following gauge meter : bq27421-g1. We observed a strange behavior on these 2 parameters:RemainingCapacityFullChargeCapacity See example below by...
View Articlebq34z100EVM - Setup
HiI want to use an eq34z100evm with an 6-cell li-po battery. Nominal voltage is 22.2V and capacity 6200mAh. what do i have to consider to setup de evalboard? How do i have to configure the settings, to...
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Battery Charger and Fuel Gauge
Hi, .For our project, we decided the below requirements:Battery Type: Lithium IonBattery Dimensions: 18650 (18mm Diameter, 65mm Length)Topology - Parallel (1s2p, 1s3p or higher)Requirements- Since...
View Articlebq20z75 v160 shows improper SOC
Hello,I have created a Golden File for a 4S Li-Ion pack using Molicel ICR18650M with Chem ID 208. When I program the Golden file in to a fresh pack which is known to be about 35% SOC, the bqEval SOC...
View ArticleBQ78350 ManufacturerAccess() command and response format?
Hi, I am working on BQ78350 and trying to interface it with an SMBus host microcontroller. What is the command format and response format for ManufacturerAccess() and ManufacturerBlockAccess()...
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