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bq27541-V200: "SOH Status" = 0x00 and SOH not changing.
The datasheet (bq27541-v200.pdf, page 15) describes the parameter "SOH Status" at address 0x2f. When I read this parameter, its value is always 0x00. I believe I have properly configured the gauge.I...
View Articlebq27421- odd behavior
A few more questions related to bq27421:1. The gauge is in the design created a while back, before the datasheet and tech manual mentioned not to ground BIN pin directly on the gauge.So that pin is...
View Articlebq34z100 - Automatic offset calibration
Hello,I'm trying to understand how and when the automatic offset calibration will occur and I'm totally confused.According to SLUA664:the automatic calibration, Board Offset, is done the first time the...
View ArticleBQ78350 - PRECHG pin
I'm bringing up a new design using the BQ78350 + BQ76930 chips and having issues with the PRECHGb pin on the BQ78350. The datasheet (SLUSB48) states that the pin has an internal pull-up to 2.5V when it...
View ArticleLCD for BQ20Z655
Hello,do you have any suggestions about the LCD which i can use with BQ20Z655?it's very urgent for my ProjectBest regards
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bq76940 REGOUT problem while charging
Based on the bq76940EVM we have developed our own BMS, which works fine while discharging the battery. We are facing problems while charging the battery. The REGOUT from the AFE (2.5V) which powers the...
View ArticleBQ76940 short circuit results shut down
I have a question that when I test short circuit function with BQ76940EVM, it always results system shutdown which means the BQ76940 IC even cuts the communication and stop providing power to the...
View ArticleBQ34Z100-G1 RAC and masking alert
HiMy customer is using the BQ34Z100-G1, in the four LED format, led not always on (LED/COMM Configuration Bit 3 is clear)We are using the datasheet SLUSBZ5 –JANUARY 2015He would like to set-up the...
View ArticleBQ33100 Charging
Hi.I want to use BQ33100 for 5 Super Caps management.I check BQ33100 using EVM board, and 5 Super Cap voltage is 2.8 * 5 = 14VBut charging voltage is about 10V, so Super Cap can not be fully...
View ArticleIntermittent connection bqstudio with bq34z100 chip
I am having an issue with connecting to the bqstudio software with my bq34z100 chip. I'm using the circuit recommended on the datasheet and I'm having an issue with having a constant connection and my...
View ArticleBQ40Z60 Evaluation Board Max error - state of charge 100%
Hi,I am testing a BQ40Z60 evaluation board with 2s cells. I changed the jumper J4 to 2S and set DA Config (CC1 and CC0) and set the cell cemistry correct.I also did temperature and Voltage calibration....
View ArticleBQ77PL900 I2C to Arduino
Hello,I am struggling to set up I2C communications between an arduino and a bq77pl900evm-001 evaluation board.Is there any C example code for the sequence of data that should be transmitted and...
View ArticleLabVIEW Support for EV2200
We already have bq2040 to communicate with EV2200 using SMBus to extract data from our batteries here at Zoll Medical Systems.I am anxious to find out if you have any advice or links on how to do...
View ArticleNeed BQ769x0 Register Reference Manual
My customer is looking for the reference manual for the bq769x0 devices. They are planning to use their own microcontroller to drive it (option shown on the bq769x0 datasheet), but need to have the...
View ArticleBQ34Z100 FLASH CORRUPTION
Hi,I have faced an issue in BQ34Z100 after 7 cycles of complete calibration. At the 8th cycle the calibration is failed and in the Data flash CODES SECURITY section all the parameters RESET to 000000....
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BQ20z95EVM : No communication with EVM Gas gauge...
Previously I connected bq20z95evm with EV2300 and it worked. But now I have problem when I connect and start bqEVSW shown as following picture.I have no idea what wrong I've done, I just connect Them...
View ArticleFull Charge Capacity
Dear Tier,My customer used BQ20Z80+ICR18650-25F in the prior project.Currently she is designing a combination of BQ20Z90 + ICR18650-30A(Cell).I have two questions.1. Is it available to modify FCC or RC...
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BQ27520-G4 / incremental read
Hi All,Our customer evaluate bq27520-G4 and they plan to read register by using incremental read. Then can we read register through Temperature( ) to StateOfCharge( ) continuously? Please let me know...
View ArticleCan the BQ76930 be used only for voltage monitor & cell balancing?
Greetings, I like the look of the BQ76930 for voltage monitoring and balancing, however it won't work for me for overcurrent protection.Is it possible to use it only for these features and have an...
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