Part Number:BQ27541
Tool/software: Starterware
Hi TI,
BQ27541 There is inquiry about IC.
Is 1-wire communication (HDQ) possible?
If possible, I will also ask if there is something I need to set up separately.
Is it possible to replace the BQ27542-G1 product further?
BQ27541 The product is NRND.
Part Number:BQ78350-R1
Hello,
I'm a university student working on a 10-series BMS using the BQ78350-R1 and the BQ769300.
I did some research and looked at other forums to get started with SMBus using an I2C Interface (BLE113).
This is what I have so far, but I can't figure out what is or isn't happening correctly. I have here attached code, examples, and the Logic Analyzer.
Any help would be appreciated!
-------------------------------------------------------------
Based off of the TI I2C Compatibility Worksheet...
Block Write = SMBus Address // Command // N Bytes (Write) // Data
Block Read = SMBus Address (Write) // Command // Restart // SMBus Address (Read) // N Bytes (Read) // Data
The example DF Write and Read from the Fuel Gauge Technical:
Image may be NSFW.
Clik here to view.
This is my code in IAR to write. The TRUE parameter is simply the repeated start.
I am attempting to write to the address 0x4466 the value 0x00 then read that value back.
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Here is the response:
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As far as I am aware, the 0x0B is just the 0x16/0x17 write/read shifted for my I2C implementation?
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Thanks,
Part Number:BQ27441EVM-G1A
Hi:
My steps：
connect battery
open BatteryManagementStudio
soc = 45
charging
... wait...
soc = 55
stop charging
remove battery
close BatteryManagementStudio
and then...
connect battery
open BatteryManagementStudio
soc = 65
SOC is unstable.
I did not change any Setting，just use the default setting.
Why? It changes from 55 to 65.
Part Number:BQ20Z95
Hi TI,
I will send you a technical request for the BQ20Z95 V150.
1. CELL TYPE: 3 CELL
2. Phenomenon (Refer to attached document)
-. After calibrating the voltage, it is calibrated 30 ~ 40mV higher than the reference voltage and the voltage is gradually lowered to the reference voltage.
-. Term Voltage This phenomenon occurs at 9000mV but not at Term Voltage 10000mV.
(We know that 3cell is set to 9000mV.)
Thank you.
Part Number:BQ20Z95
Hi TI,
BQ27541 There is inquiry about IC.
Is 1-wire communication (HDQ) possible?
If possible, I will also ask if there is something I need to set up separately.
Is it possible to replace the BQ27542-G1 product further?
BQ27541 The product is NRND.
Part Number:BQ28Z610
Hi ,
I am(Please visit the site to view this file) planning to use Bq28z610 for Gauging LiFePo4 based A123 system battery , Kindly let me know if i can use this . I am open for any other simpler solution.
Part Number:BQ40Z50-R1
Hi,
We are using BQ40Z50-R1 in our design, (attached schematic for reference). while testing we connected it to 3S1p Li-on Battery pack and found that cell-1 have 5512mV readout, cell-2 have 0mV readout , cell-3 5495mV and Battery Pin voltage have 11069mV readout (attached registers screenshot ). Voltage measured across VC1 & GND is 5.51 V , VC1 & VC2 is 0 V, VC3 &VC2 is 5.49 V . But the voltage measured across the cells are 3.69V and across the pack is 11.08V .
We also observed the the following alerts in bqstudio (attached screenshot )
Safety status() [COV]=1,
Safety status() [CUV]=1,
Safety status() [CUVV]=1,
Battery Status ()[INIT]=1
Battery Status ()[DSG]=1
Battery Status ()[FD]=1
what could be the reason for 0V readout across VC1 & VC2. Any help is appreciated .
Thanks & Regards
Chandrasekar S
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Part Number:BQ40Z60
Dear TI & E2E community.
We have a custom board based 100% off the EVM board (same components used etc.) our board is a 4S4P configuration with 16pcs INR18650-30Q Samsung cells 3000mAh.
We are applying 24VDC from a 100W Meanwell SP100-24 24VDC power supply however the "AC Adapter voltage" is reported in BQStudio 1.3.52 as being 17558mV which doesn't make sense
When we discharge with our electronic DC load set to constant 3A (verified with a Fluke 189 True RMS meter) BqStudio reports about 3.6A discharge which doesn't make much sense either.
I tried running the Calibration command for current calibration by setting our electronic load to 2A (across the +PACK) and typing -2000 in the applied current box and trying to calibrate but it always fails then I tried putting +2000 in which messed it all up so I uploaded the Revision 15 firmware back to the device again in hope that would clear those settings ...
Am I missing something?
Part Number:BQ40Z50-R1
I recently received battery packs and have started charging them on the BQ40Z50-R1 for the first time. The charging process seems to work as expected, but once charged I see a pulsing into/out of the charging state. I have an LED on Stat1 and it flashes once every second or so constantly. Is this normal behavior? If so, what it it doing, and if not, what are the likely issues causing it? Thanks!
Part Number:BQ27441-G1
Hello Team,
We are working on one project and we selected bq27441-G1 fuel gauge for measurement of battery health & BQ24095 Charge controller for charging battery.
kindly review the attached schematic of both, and give your valuable suggestion on it.
Battery Specification - Li-ion, 3.7V DC, 1050-MAh
Input From USB or DC jack - 5V DC, Max-1.5A
Dear Texas instrument,
I brought this instrument several days ago. I went through all the procedure to start my instrument and it got started but is not responding.
Instrument details:
EV2300, HPA002
The problem I am facing is that whenever I attach the battery with my PC board all the sections aren't filling. Sections such as standby current, average power and so on. I am not able to test my battery.
Regards,
Naman.
Part Number:BQ27742-G1
Hello Team,
I have a problem with the bq27742-g1 fuel gauge.
As suggested in Forum, to enable bq27742-g1 fuel gauge sort the CELL+ & PACK+ terminals together for a moment, after sorting that both terminals fuel gauge is working fine
but after disconnected a battery from the system BQ27742-G1 fuel gauge is not worked, every time gauge is working after sorting the CELL+ & PACK+ terminals.
What should I do to working it permanently after battery disconnect?
Thanks in advance,
Mitul Tank
Can BqStudio with EV2300 act like smbus slave? I work about smart battery system. Smart battery becomes SMBus host in some cases. For example sending AlarmWarning. I could use bqStduio when Smart Battery was SMBus slave. But I couldn't use bqStdudio when Smart Battery was SMBus master. Can I use like master ? What should I do?
Part Number:BQ27520-G4
Hi Team,
Since my customers is using external NTC TH11-4H104F, we should calculate new temp model for this.
Please kindly teach us how to get the new coeff. Attachment is NTC spec. (Please visit the site to view this file)
-Ake
Part Number:BQ27426
Hello,
Using bq27426 and current setting is as below.
Temp Source[01]: External Thermistor 설정.
Subclass ID: 82, Offset: 6 (Design Capacity) 2300mAh
Subclass ID: 82, Offset: 8 (Design Energy) 8800mWh
What I want to know is
1. what means of this equation for Subclass ID: 82, Offset: 0(Qmax Cell 0). Please let me clarify it.
Qmax (mAh) = Qmax Cell 0 × Design Capacity/2^14
2. Set Design Capacity to 2300mAh, but FullChargeCapacity(0x0e,0x0f) value is 2200.
Why its value is 2200 not 2300?
3. Is there any other registers which has to be set?
Could you let me get your answer about above questions?
Regards,
Nicky
In battery studio management tool->settings-> Gas gauging. What is the difference between set voltage threshold & clear voltage threshold? what is difference between FC, FD & TC, TD?
Part Number:BQ27441-G1
Hi
Im working with the freescale K53 tower and the bq27441-G1, Im new with this chip so I began to program the bq27441-G1 based on a arduino example from sparkfun, it didnt work for me.
Right now I can only read the ID register (0x0001) and the chemical id register (0x0008), but I can't modify the Design Capacity register (0x3C and 0x3D). When I try to read the default Design Capacity, the chip return a senseless value.
1) Is there any explanation for that?
2)Is there any C lenguage example available to compare with my code?
Regards.
Part Number:BQ34Z100-G1
Hello!
I have a doubte!
When you communicate with I2C with the integrated, if you haven't programmed any parameters in the BQ34Z100-G1, the values it gets are real? Or can it give totally weird things?
For example the voltage I have is 11V, an the integrated give mi 564....
