gas gauge maximum capacity
Dear TI team,I am trying to design a battery monitor for high capacity 1-cell battery, i am using bq28550-R1 gas gauge IC. in IC's data sheet, maximum capacity has been set to 8AH, can I use this IC...
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BQ77908 High Altitude Balloon Mission - Recovery from Single Event Upset
I will be flying a BQ77908 battery pack on a high altitude balloon mission where a single event upset may latch up the device. Where is the best place to put a MOSFET switch in order to cycle the...
View ArticleBQ34Z100 setting DOD0
I have been using the BQ34Z100 on a recent application and I am struggling to get the fuel gauge to learn correctly. After discharge the OCVTAKEN flag eventually sets. At this point I want to send the...
View ArticleBQ27510 device is not come out from the ROM mode
Hi SIr / Madam ,This is vengad here from Avnet , one of my customer has completed the BQ27510 Fuel gauge proto board for Medical applcaition .They need to do command line approach to program the fuel...
View Articlebq27421- conditions for Qmax update?
I am cycling a Li-Poly cell with a bq27421 -G1A EVM, and am yet to see QMAX_Up or RES_UP flags set after several charge/discharge and relax cycles.Looking through user guide, I see:"After the initial...
View ArticleProgram bq2754x DFI under HDQ protocol
I can program the DFI under I2C protocol correctly.but, I change the commands from I2C to HDQ. Always got error checksum value return by 0x66 command and the result is 0x01.How can i program the DFI...
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bq27530-G1 / EV2300 Issue updating battery parameters
I have designed in the bq27530-G1 into my product and need to update the battery capacity, taper, etc parameters but everytime i try to program it i get an error. See attached. Im using a windows 7...
View ArticleBQ34Z110 pulling P4/SCL low
Hello,We have had a PCB made incorporating a BQ34Z110 with an implementation more or less as per Figure 8 (p32 of the datasheet) but without the SN74HC/LED's, without HDQ. The chip supply is also...
View Articlebq78350 product
I don't found the bq78350_xxxx.srec firmware file for bq78350...please help me
View ArticleBq27421-G1A Learning cycle
Hi,I have a specific question regarding the learning cycle of the Bq27421-G1A when trying to do the initial charge from relaxed.I have set the following configuration:Design capacity = 1800Design...
View ArticleUse TI-27621-G1 gauge but can not get correct info via Control() command pair?
Need TI expert to answer this question,I am now develop TI 27621-G1 gauge on our system.I am confused with Control() (0x00 and 0x01) 2 pair- command and I try to read out device type(0x0621)by...
View ArticleBq27510 Golden Image Programming over firmware
Hello,if I have created a golden image.dfi file explained like in slua544.pdf it´s possible to write this file into flash without connecting with extern tools like bq Evaluation Software? I will to do...
View Articlesystem side gauge
For a system side gauge, how does the gauge perform the SOC estimation when the batter attaches?especially for a un-relaxed battery, how to ensure the SOC accuracy at the beginning?
View ArticleImproper behavior of DSG PIN in Bq34Z950
HelloI used BQ34Z950 IC to develop protection circuit for lithium ion battery pack 4s3p.But facing problem regarding discharge Mosfet Drive Pin (DSG) of IC. This pin goes high (to 16v) whenever...
View ArticlebqEASY doesn't save DFI-file to HDD
Hi there,I am using bqEVSW (version0.9.92) with EV2300 on Windows 7 to generate a golden image for my bq27500 gas gauge.So far, everything works fine and the golden image is generated after the cycling...
View ArticleBQ27541-G1 hibernate mode
Hi,We are planning to use BQ27541-G1 chip in out design and we have doubt regarding the different power modes this chip can support.We want to use SE pin in the chip to cut off power from battery to...
View Articlebq27500 Golden Image Programming
Hi all,I've got a bq27500-v130 designed into a product. I've already gone and generated my golden image file by calibrating 20-30 boards, averaging values, and using bqEASY. However, my question is...
View ArticleDifference in single cell gas gauges
Hello There,Does anyone know the difference between bq 26200 and bq26201?And the difference between bq 26500 and bq26501 ?Not much difference when reading datasheets...Thanks.MI
View ArticleGetting started with bq27541-G1
Hi there!In our future product we plan to use the bq27541-G1 gas gauges. The IC will reside on the system PCB since the cell will be non-removable (by the end user).We tried to figure out how to...
View Articlebq29209 cell balancer
I am having a problem understanding the cell balancing IC datasheet. specifically the Recommended Cell Balancing Configuration table listed on page 5 of the datasheet. It lists the ICB values with a...
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