BQ3060 max error and learning cycle
Hi,I'm developing a product with BQ3060 and we are in stages of prototype production.One thing we found out is that the learning cycle is going to take too long to be performed on production pieces.How...
View ArticleClik here to view.
bq27621-G1 I2C Stuck
Hi there,I am using the bq27621-G1 and I have seen that when the battery level goes low or is discharged, the gauge returns always 0x00 for all requests and the SCK is always High. If I do a hardware...
View Articlebq40z50evm,why are "Remaining Capacity" and "Full Charge Capacity" always at...
I use em2400 to communicate with bq40z50evm by bqStudio,i have set GAUGE_EN to 1,set chem_id to 0x3102 and my pack is 2 cells.But the Remaining Capacity and Full Charge Capacity are always at...
View ArticleClik here to view.
Cell balancing at rest
Hi,I'm trying to use BQ40z60 chip, but the balancing function at rest doesn't work, as you can see in the attached figures. Do you know why?Thanks for your help.
View ArticleClik here to view.
BQ27421 routing
Hi All, We would like to have some support in the routing of BQ27421 fuel gauge. As per the datasheet, the BQ27421 fuel gauge supports an RMS current of 2 A through the sense resistors. In our case...
View Articlebq40z60 flash programming
Hi. I want to have an ability to reprogram firmware of bq40z60 in my custom hardware. In my custom hardware I have dm3730 processor with sd-card, where i can store *.srec file. As s-record format is...
View Articlebq40z60 VCC and AC FETpin
According to the bq40z60 datasheet's following quoted text, I have a question. "The AC FET (N-CH MOSFET) controls power input from the AC adaptor to the battery charging system by monitoring the...
View ArticleGDK can't connect to BQ40Z50EVM
Am trying to use BQ27GDK000EVMwith BQ40z50EVM-561. Have updated the EV2400 firmware in the GDK to version 0.18 in attempt to solve the problem.BQStudio is version 1.3.42.The GDK does not recognize the...
View Articlebq40z60 - Charge Overtemperature (COT)?
Hello,I am seeing COT and CTOS safety alerts on my bq40z60 charger. The reference manual states:The charger has an independent temperature comparator with a trip point defined by TSHUTDOWN in...
View Articlebq40z60 CHG FET description in datasheet
Refer below quoted text from Page 27 of SLUSAW3C bq40z60 datasheet."If the average discharge current is high, the system can turn ON the CHG FET for improved efficiency and minimized line losses during...
View ArticleManufacturer Block Access (0x44) in BQ40Z50 can't be read
HiI am using BQ40Z50 battery. In this i am trying to read the ManufacturerAccess(0x0035) using ManufacturerBlockAccess(), since these key values can be read from ManufacturerBlockAccess only. I am...
View ArticleBQ40Z60 without ev2300/ev2400
Hi guys.Is it possible to use the BQ40Z60 without an EV2300 or the like?By only programming it through the SMBus through, say a microcontroller or a linux gpio system?Also, is the BQ40Z60 supposed to...
View ArticleBQ34Z100: Positive current when no load
Hi,My customer is using the BQ34z100 in one of his projects and so far is going well. However, when there is no load connected, it is showing a positive current into the battery even when there is no...
View ArticleBQ40Z50 - SHA-1 Authentication
Hi all, I am using BQ40Z50 fuel gauge battery. In this i am planning to implement the SHA1 authentication with MSP40F5335. I am studying the technical reference manual SLUUA43–December 2013 section 10...
View ArticleBG34Z100-G1 with Lead acid battery
Hi,I want to use BG34Z100-G1 with a lead acid battery YUASA NP7-12L 12V, 7Ah. I use bqStudio and I read voltage, current and temperature but remaining capacity and state of charge % are not updated...
View Articlebq40z60 registers
Hi, everybody. I compared dump of registers from newly soldered bq40z60 and 2015.07.02_BMS modifiedTI.srec. I choose this file, because I have 2 cells battery too.I've got some questions:1) Where can I...
View ArticleBQ40Z60 BatteryMode()[CF]
Hi!I've not understand what is the meaning of the CF bit in the BatteryMode() word. The datasheet asserts "Conditioning needed if MaxError() > CF Max Error Limit", but nowhere in the datasheet there...
View ArticleGas Gauge Chemistry Updater
Hello,I want to have the latest chemistries for BqESW. However your site offers only the instalation of "bqStudio Chemistry Updater" (I can not find a download).And the update function of chemistry of...
View ArticleClik here to view.
XCHG e XDSG are active without any flag bit that could justify them
Here is a screenshot of the registers. Why both charge and discharge are inhibitedThank you
View ArticleQmax question
Hello,I am working with a Lead Acid 12V 18Ah battery. In order to put an initial value into Qmax Cell 0 field, what value should I use: 18000 or just 3000 (18000 / 6 (series cells))I've tried with...
View Article