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re-program the ROM file
Hi ,For the bq20z90+ bq29330 board, we found an issue that when after we charge and discharge a few time , the bq evaluation show that the CHG and DSG column have been turn it to green and it have no...
View Articlebq34z100-G1 State Of Health configuration/calculation
Hi,since we want to tell the user when the lead acid batteries should be exchanged we rely on a good state of health value.SLUSBZ5A says:8.3.2.10 StateOfHealth(): 0x2E/0x2FThis read-only command pair...
View ArticleBQ40Z60 adapter voltage during charging
Hey guys,i am using the eval board of the BQ40Z60 with two LiIon cells (DA configuration = 0x11, Minimum Voltage Output = 4350, Voltage Resolution = 17).I turned down the current values for charging,...
View ArticleCC offset and CC Auto offset in bq40z50
Hi Team,Could you kindly give a clear description for CC offset and CC Auto offset? I have a little confused in TRM.CC offset : Used for Current() and AverageCurrent();CC Auto offset: Used for cell...
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bq40z60EVM dead after upload *.srec file
I uploaded a *.srec file into my bq40z60EVM, unfortunately the upload hung somewhere at the end and now the EVM is no longer found by bqstudio.The *.srec file from a previous project was once...
View ArticleBQ studio v1.3.52
Dear allI would like to find out if there are some good startup documentations on the BQ studio. I would like to find out how to write my own chemistry for a battery i use ??If you have an idea on how...
View ArticleBQ27621 operation
Can some one help me with the following questions:How critical OCV (Open Circuit Voltage) to be measured accurately; i.e. suppose that after coming from Shutdown, the load is not zero (not really OCV...
View ArticleApproach of Programming bq34z100-G1 the Golden File with MCU
Hi,We are designing a MSP430F5419 MCU based power management board using bq34z100-G1.Now we are facing two problems (1) For mass production, of course we need to programming the bq34z100-g1, but it's...
View ArticleBQ34Z100-G1 discharge only with SOC remains 0%
Hello,I use the BQ34Z100-G1 with a lead battery 12V 20AH.I want to use the BQ34Z100 only discharge, recharging will be done outside. (Normaly it's possible:...
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Having trouble configuring BQ27520-G4
Hello,We're using the BQ27520YZFT-G4 in our design and are having trouble configuring it properly to work with our 1700mAh cell.The cell is LiPo but the chemistry is unknown (the manufacturer won't...
View Articlebq34z100-g1 terms
Hello My customer have several questions about terms and also usage of BQ34z100-G1.Would you please let me know? Q1 RFACTSTEPRFACTSTEP : We see RFACTSTEP is used to enable resistance update range set...
View ArticleRecover bq34z100g1
Hi AllI have unplugged my bq34z100g1 while I was uploading a default golden file. Now I can not talk to It.How can I recover the device. (running I2C)Kind regardsBen
View ArticleCell imbalance when using reference design for BQ40z50
I've got a dozen packs that all have low voltage on cell 1. Every single pack has ~2700mV for cell 1 and ~3200mV for cells 2, 3 and 4. The packs are Lithium Iron Phosphate cells, four cells each....
View ArticleNiMH Golden File
HiThe process of creating a golden file for NiMH.... IS that the same as for LION?Kind regardsBen
View ArticleGas Gauge tps27510G3 and charger tps24618
Hello,I have a issue using fuel gauge TPS27510G3 and Charger TPS24618 together, when charger completes and stops charging, SOC of TPS27510 is not 100% yet, e.g. 92%, what should I do to fix this issue,...
View ArticleBQ20Z75 - Change Security Keys 0x60 0x61
Hello,I am struggling to change the security keys in BQ20Z75 using commands 0x60 and 0x61.I recently posted asking the similar question with BQ40Z25 so you can see I am struggling with changing keys...
View ArticlePrimary Lithium-ion monitor solution
Hi,My customer is considering to develop the primary lithium-ion monitor system by impedance tracking.Which device is suitable?I found the BQ2052, however it is NRND.Or could you show me any solution...
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Issue of Generating Golden Image using Battery Management Studio
Hi, I want to use Battery Management Studio (1.3.52) to export the golden images(df.fs and bq.fs). I'm using bq34z100EVM with EV2300.However, I 'm facing two issues(the two issue remain even if I...
View ArticleHPA 495 (Advanced BQMTester)
I have just finished making a jig with an HPA495. I have it all wired up and it mostly works, however the current calibration isn't very accurate. When I turn off the current, my fuel gauge thinks...
View ArticleBQ34Z100-G1 or BQ27520-G4
I want to design a host-side gas gauge. The CPU will be TMS320F28335.The battery wil connect to gas gauge when discharge, but disconnect when charge.The battery pack I used is Tracer 12V 22Ah.Type...
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