bq76PL536 MSP430 - stack 2 EVMs - wrong data for devices - code
Hi,I am working on MSP430 Eval kit with 2 stacked bq76PL536 EVMs in my project.I have used slaa478 sample code from TI. I have got report of the cells from MSP430-EVM RS232 serial port.but I have...
View ArticleParallel Cells using the TI bq-series ICs
Hello All,I am new to the TI bq series of battery management ICs. I have prior battery management circuit & software design experience.I have a high-current 12 volt battery pack application in...
View Articlebq24735 multi-cell charging
Hi,I have a battery packs of 3 cells welded on a PCB which has the gas gauge chip bq20z65.I will use a smart charger using the chip bq24735. It's in a good way to work now.But I wonder if it's possible...
View ArticlebqMTesterS and the .NET environment
My customer is having difficulties with the BQ active X controls, please see below. What can we do to help her?Hi. I am having some problems compiling and running an application using the active x...
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bq20z95 extended SBS command timing, sealed mode
Hi all,I am trying to use extended SBS commands via manufacturer access in sealed mode, as described in section A.1.3 in the bq20Z95 technical reference manual. I am attempting to implement this...
View ArticleBQ29200 - Cell Balancing Circuit
Hi,I am planning to use BQ29200 mainly as a cell balancing chip for a BMS of 2-series Li cells. I am using another IC (Maxim's DS2777) as the battery monitor, gas gauge and protection. Will there be...
View ArticleBQ27530-G1 AUTHFAIL
I am using the BQ27530-G1 with BQ24160 charger. I am having an AUTHFAIL come up when I try to communicate with the charger using the gas gauge.I am referencing the BQ27531 TRM draft, and it points to...
View ArticleBQ27530-G1 Unseal/full-access codes
Where can I find the unseal codes for this device? I am developing on custom-built hardware and need access to change which charging IC I am using.
View ArticleBQ34Z100 VOK bit
hi,I'm using 6S1P battery with BQ34Z100 as fuel gauge. I'm sending IT_ENABLE command, now VOK bit is set. then i started charging. After charge relaxation OCVTAKEN bit is set and VOK bit is also set....
View ArticleGauge Studio
Hi,the Gauge Studio is not communicating with my gauge.I use:EV2300-002When I connect the Interface without the gauge.The Gauge Studio read: EV2300a Version: 3.1r.If I connect the gauge over I2C then...
View Articlebq27510-G2
HiWe are using bq27510-G2 fuel gauge in our design. The battery we are using is 1960mAH Lithium Ion from molicell (datasheet attached). I have referred calibration procedure from the document...
View ArticleBQ76PL536 drive low side N-channel MOSFET for charge discharge protection
I am developing BQ76PL536 for 18 cell li-po charge. discharge, balance and protection purpose, compared to BQ77910A the main benefit of 536 is it easy to stack up without level shift communication...
View Articlecan BQ76PL536A be switch off completely rather than sleep ?
can i shutdown BQ76PL536A by external switch ?now we can send 536A to sleep with uA level consumption, however to prevent the battery attached from being overdischarge after long period of time,...
View ArticleCapacity estimation BQ20z65-R1
The capacity estimation does not function correct when the ambient temperature changes, remaining capacity and fullcharge capacity are only updated if the start capacity-estimation-command (0x21) is...
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BQ77180x family 3-terminal fuse
In the datasheet of the BQ77180x family of parts, it shows that the 3-terminal fuse is attached to the pack+ signal line. The only manufacturer that can be found that suits this is Dexerials "self...
View Articlebq34z100 update status to 06 fail
Hihope someone can please give me a few pointers.my config is a 4 serial x 2 parallel LION battery of 4500mAh. my max voltage is 16.8 volts when charging.I have been for many long days now trying to...
View ArticleBq34z100 Control and Block commands
Hi ,I wanted to know about how control command and its subsequent 2byte sub commands retrieve data.We are considering a code to send command 1 byte at a time to fetch the data.So if suppose i want to...
View ArticleBQ76PL536A Converting TSn Result to Voltage
Hello,We are using the BQ76PL536A, but realized that the datasheet has changed since we first started looking at the device. In the "A" version, the formulas in the "Converting TSn Result to Voltage"...
View Articlebq20z65: EVM uses -R1 chip?
Hello,Does the bq20z65EVM use the -R1 version of the chip? The BOM in the user's guide lists the bq20z65 but its last update was in 2009 and I was hoping that the -R1 version was now being used.John
View ArticleBQ27531 Temperature Calibration
Does anyone know if the "Ext Temp Offset" is in degrees (as suggested by SLUUA96) or tenths of a degree (as suggested in SLUA640)?Thanks
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