MSP430 SW for BQ76925 calibration correction calculation
Team,Can you please provide me with calculation on how to compensate for gain and offset and take into account the 0.25ref and 0.75ref calibration? I found this...
View ArticleBQ34z110 Optimization cycle, OCVTAKEN after charging won't set
Hi,I am currently running a optimization cycle with a bq34z110 in combination with a 40Ah (current scale 1/2) sealed lead acid battery.-I started with a fully loaded and relaxed battery,-Send IT...
View Articlebq78350 communication error
We are experiencing SMBus Communication problems while connecting our BMS board to the Battery Management Studio GUI. When I try to use the scan tool in the GUI , the connection is not consistent and...
View ArticleBQ34Z100 chip revision
Hi,I would like to know is there any chip revision for BQ34Z100 recently? If there is what are the updates implemented?We have seen SOC jumping issue in our previous test and been informed there is...
View ArticleBq27421 State of Charge is always 100%
Using the EV2400 with a BQ27421EVM-G1A the state of charge is always 100%, or Remaining Capacity and Full Charge capacity are always the same. What could be wrong? The current and voltages and...
View ArticleBQ34Z100EVM and GDK(BQ27GDK000EVM) Connection
Hi.I have two questions.1>I want to use GDK (BQ27GDK000EVM) for BQ34Z100's accuracy.But Battery Management Studio can not detect BQ34Z100EVM.In this case, BQ27GDK000EVM is not supported...
View ArticleBQ2050 battery capacity indicator
Hi,I am using BQ2050 for showing Li-Ion battery capacity indicator as standalone device without any microcontroller. Battery capacity is 1300mAh and using 50mOhm sense resistor. Only first 3 LED's are...
View ArticleChanging from default chemistry in BQ3055
I'm using the BQ3055 in a 3000mAHr 4S LiFePO4 pack. As far as I can tell the only impact of using the default chem ID of 0x0100 is that the SOC at reset is not accurate, is this the case?I would still...
View ArticleBQ27742-MOSFET Control
Hi all,I use for the first time the BQ27742 and I not found in the technical reference manual the command for control the MOSFET for charge and discharge by host.In my application I need to put this 2...
View ArticleBQ27742-G1 MOSFET
Hi,I want to use the BQ27742-G1, but I cannot find instruction in the manual of BQ27742-G1, if the Host can controlled CHG and DSG Mosfet ?Thanks.
View ArticleResetting BQ3060
Is there a way to reset BQ3060 with a push button?Here is the problem I have:My PRES pin is tied low with pull down resistor.My battery has a 4 pin connector. When I insert the battery, BQ3060 enters...
View ArticleBQ33100 Flash Gas Guage image
For one of my customers , I need help on BQ33100I need your help on step-by-step document to flash the BQ33100 gas gauge image in .txt file into Supercap and generate the .gg file back again for...
View ArticleBattery Management Studio, EV2300 problem
Hello guys, I'm in trouble with Battery Management Studio, EV2300 for bq78350 + bq76920 system control. I set recovery delay time for bq78350 through EV2300 to 60 seconds.Then I checked actual delay...
View ArticleBQ34Z110 ALERT SIGNAL
Hello, I tried to set ALERT SIGNAL for bq34z110, but it did not work correctly. Maybe I made some mistake during setting. I set LED_Comm Configuration as 0x00 (Table 13. 0 = No LED, Table 14. Alert Pin...
View Articlebq40z50EVM Gerbers
Are the Gerber files for this EVM available? I know the layers are shown in the pdf, but Gerbers are so much easier to view!Thanks.Tom
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BQ769x0 - BQ78350 ALERT pin pull-down requirements
BQ76940 EVM has 499k // 470pF on ALERT pin.I though bq78350 would drive a 0 and that a PD was useless.I am wrong since our design needs something even stronger than 499k ( somewhere under 150k) to work...
View ArticleBQ78350 CHGIN charge inhibit understanding
Hi,We are currently developing using the BQ78350 and we are trying to configure the temperature threshold for charge inhibit.Section 5.6 of the TRM says that the BQ be in a normal status when the...
View ArticleSetting to turn FETs on BQ3060
Is there any setting to force BQ3060 to turn FETs off if cell voltage drops below a certain level?
View ArticleSLAA478 with BQ76PL536 and MSP 430
Hi,I am experimenting on connecting multi cell system with slaa478 solution.I connected 50 cells with 5 cells per bq76pl536. So there are 10 bq76pl536 devices in total connected with msp 430.for up to...
View ArticleBQ40Z50 thermal pad dimensions
The bq40z50 data sheet says that the thermal pad is 1.4 mm (55 mils) square and shows a board layout example with the PCB pad size the same as the package: 1.4 mm square. The Gerbers for the EVM...
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