BQ27510DRZR-G3 diagnostic
We have the BQ27510DRZR-G3 in our handheld devices. It appears some of the chips were not flashed correctly or are otherwise corrupt. The meter seems to give the incorrect power remaining levels which...
View Articleresistor divider
Hello,As we see for bq78350 the BAT pin can selectively connects to different divided voltages in tida schematic. Different divider network results in different measurement, but how to configure this...
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BQ28Z610 acting as I2C master?
Hello,I am seeing something very strange with the BQ28Z610. I held our system microcontroller (the I2C master) in reset but I noticed the BQ28Z610 every 15 seconds or so generates 9 clock pulses and is...
View ArticleBQ28Z610 SOH COMMAND STATUS COMMAND 0x3F
In the datasheet for the bq28z610 there is a command called SOH status (0x3F). What is the difference between the read values of 0x01 (instant SOH value read), 0x02 (initial SOH value ready), and 0x03...
View ArticleBQ28z610 battery data needed
I am in a hurry to use the BQ28z610 chip and could uses a sample of LiPo 1 cell data to place in our processor firmware. Our processor will (IIC) program the BQ with the parameters on power up. Is...
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BQ40Z60 application question
Hi Ti experts,This is a small UPS usage.May we use BQ40Z60 for this?Thanks,Mark
View Articlebq40z60 SMBD Issues
Hello，I am using the chip bq40z60 to design a 3-cell management PCB according to the Typical Application Schematic in the datasheet of bq40z60.I have some questions about this chip.1.The bq40z60 board...
View ArticleStruggle of optimization cycle for NiMH ( BQ34z100g1)
Hi AllStruggle to get my bq34z100g1 to go less then 100% max errorI have used the SLUA334B document to the letter.I have set QMAX at 2500Enabled IT (command 21)Did a full charge , waited 2 hours did a...
View Articlebq78350 SAFE pin for SUV
Hi,I'm having difficulties trying to confirm a permanent error on a safety undervoltage condition. I am using a bq78350 with the companion bq76920.I have been able to reproduce a normal undervoltage...
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BQ27421-Qmax And Ra table When to update
Hi,Quick start page 81)When should i copy the nvram( qmax and ra table ) data to the ram.2)What all data should i store in nvram.Thanks,Likhitha
View ArticleData Flash verification
Hi, As per the DFI write flow chart(Doc:SLUA449F(Going to Production with the bq275xx),Page no:10), By reading the flash register 0x66,we can check the data integrity. So this command can used to...
View Articleis there a bq tester for bq30z554
Hi to all.I am looking for the software bq tester for the device bq30z554.I need this for a project.Thank you.
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the Format of FlashStream
Hi, I used Battery Management Studio to export the bq.fs and df.fs files for doing reverse engineering of how to program it via MCU.Below is a piece of data section. Could anyone help me to check if my...
View ArticleBQ27GDK000EVM discharging problem
Hello,Our client has problem with BQ27GDK000EVM, we already replaced the board, but they are still experiencing problems.Please see description below:We have some problems with the bq27gdk000evm (and...
View ArticleBQ27621 reverse voltage protection?
Hello,We are evaluating the BQ27621 for replacing a competitor's product in our application. We have a device powered by external dumb battery packs that can be hot-swapped, and use the fuel gauge for...
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HPA 495
Hi ,We have build a JIG HPA495+EV2300 setup with BQ20Z90 and the connection is follow as per below picture.The question is that we are taking a few production board run with (bqMultiStationTester), we...
View ArticleBQ studio: BQ76930
Hi Support,Customer is using MCU to control the AFE BQ76930.Is there a BQ studio profile that allows reading off the battery information via EV2400 off the above architecture?Currently, am using...
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BQ34Z100 sets wrong full charge capacity during operation
Hello everyone,we have successfully set up a 24V LiFePo4 battery pack with the BQ34Z100 chip, i.e. charged, recharged, got Qmax updates, update status = 0x06.Now here's the problem: During setup, we...
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bq34z100 - reported Full Charge Capacity Less than expected
After doing the proper learning cycle, the capacity reported seems to be less than what I would expect.The reported full charge is about 2780 - 2850mAh after several charge-discharge cycle. I am...
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