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BQ34Z100: Inadvertent Charging
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BQ27220: BQ27220: Cannot generate GMSF File in bqStudio "Reading the data memory or flash image has failed"
Part Number:BQ27220
Hi Onyx
I'm having trouble creating a GMSF file in BqStudio for the BQ27220 (using EVM2400). I'm always getting "Reading the data memory or flash image has failed The golden image files could not be created".
Additional information:
- EVM2400
- bqStudio 1.3.52.1 (also tested with 1.3.86)
- When this happens, the "Progress Information Image Files" window says "Reading data memory: Address 0x9180".
- Maybe related: When go to "Data Memory" > "Read All" > "Write All" (without changing any default value) I get a red error message on the bottom "Value is beyond minimum value defined for parameter.:Calibration.Current.CC Gain"
- I can reproduce this just by starting up, going to Golden Image and then hitting "Create Image Files"
- OTFS files are created without problem
Thanks for your help!
Best,
Mark
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BQ2040: Charging Issue
Part Number:BQ2040
Hi.
My customer using BQ2040 until now.
They production battery pack using BQ2040 and 3S2P(5600mAH) Samsung battery (2800mAH)
The battery pack using the BQ2040 occasionally has a problem that it can not charging.
This is a symptom that can not charging when they try to charge (especially after discharging).
I attached the schematic, GG file and GUI screen shot.
Please check GG file and data flash setting.
I think data flash setting is strange.
Please let me know some debugging hint.
(Please visit the site to view this file)
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BQ78350-R1: Turn off the Alarm Broadcasting and the charger mode broadcasting
Part Number:BQ78350-R1
I would like to turn off the broadcasting of alarm and charger mode. May I know what is the bit position for Alarm Mode? It is written as Bit 13 on the Byte map but Bit 12 in the description. May I know which bit position is correct?
*Note: Please refer to SLUUBD3C page 120 and page 121 (SMS Commands)
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BQ34Z100-G1: Current Resistor Cacluations
Part Number:BQ34Z100-G1
Hi,
Can I just confirm I am calculating the power requirement for the Sense Resistor correctly.
* System running at 50A 24V DC
* Selected sense resistor 0.0025R
* Voltage drop across sense resistor 0.125V
* Therefore
(I = V / R) = (0.125V / 0.0025R = 50A)
(P = V * I ) = (0.125V * 50A = 6.25W)
So selecting a 10W, 0.0025R sense resistor should be ok for my design?
Thanks,
Rocketman46
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BQ34Z100-G1: Data Flash Checksum
Part Number:BQ34Z100-G1
Page 9 of SLUUBW5 indicates that when a Data Flash Checksum is generated by the chip, CSV is set.
Can the Data Flash Checksum be read - and on what command?
Thanks,
Larry
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BQ27220: Technical Reference Manual (sluubd4) is missing "Extended Data Commands" chapter
Part Number:BQ27220
There are alot of references in the TRM to extended data commands in chapter 5, but that chapter seems to be missing: 
If I look at a TRM for another gauge,e.g. bq27441-G1, the chapter is there:
Are they identical, i.e. can I look at the Extended Data Commands for the bq27441-G1?
Thanks,
Mark
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bqStudio Chem ID file
Hi Support team
My customer is looking for a chem ID file for LG INR18650 M26. Can you direct me to the correct location on where to find it?
Thanks
Jeff Coletti
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BQ30Z554-R1: Unseal Bq30z55 code
Part Number:BQ30Z554-R1
who knows bq30z55 unseal code？or，how can i read this unseal code，can you send me it，good man？please help me，my battery has been locked，cannot charge and discharge。。。my email ：tianyawuji@yeah.net。。。
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BQ27542-G1: Qualcomm chip msm8953‘s gpio sends Break and Break Recovery, then BQ27542 is not responding and can't communicate
Part Number:BQ27542-G1
Hi team,
According to the Timing Requirements of BQ27542 datasheet: HDQ Communication diagram (a) , I pulled the HDQ down by 500us, then pulled it up and delayed it by 60us. From the waveform diagram captured by the oscilloscope, I found that this IC is not responding, as shown in waveform (b).
The code I tested here is as shown below:
Could you please help analyse the reason?
Thanks & Best Regards,
Sherry
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BQ27441EVM-G1A: BQ27441-G1A ---AMARENDAR
Part Number:BQ27441EVM-G1A
Hi
We are using the BQ27441EVM-G1A .
By using EV2300 board i am trying to calibrate the my single cell (3.7V/5200mAh) battery.
When i open the Battery Management studio 1.3.54.1 version ...The device is in SEALED mode. LOCK symbol is able to see on IC as shown in image attached here. i tried to UNSEAL with 80008000 command.
But it is switching between SEALED and UNSEALED mode.(LOCK & UNLOCK). Unable to measure even battery parameters. Temperature register is also showing very high ...260 degrees.....
Please help any one. How to calibrate my battery.
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BQ40Z80EVM-020: Purpose of circuit around Q4? DSG FET not fully open up.
Part Number:BQ40Z80EVM-020
On the BQ40Z80EVM-020, what is the purpose of the circuit around Q4? And its relation to DSG FET Q3?
I build my own BMS circuit board based on P40Z80, which is mainly a copy of the BQ40Z80EVM-020 reference design. Everything works as expected, except the discharge FET (Q3 on the EVM) doesn't fully open up when commanded. I see a voltage drop of ~8V when pulling ~210mA and the FET is getting hot. Voltage at DSG test point is 16V in that case.
When I slightly touch the Q4 gate or remove Q4 entirely, then the DSG FET Q3 fully opens up, voltage drop is a few mV, output voltage and current as expected. Voltage at DSG test point is 21.6V then.
The BMS design is running from 6S Li-Io at nominal 21.6V. In all test cases the CHG FET is commanded open.
Any help appreciated, thanks.
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BQ34Z100: TI High Cell bqProduction SBB bq34z100 an error has occurred when launched
Part Number:BQ34Z100
Please see the log file. Original thread link: e2echina.ti.com/.../159160
!SESSION Sat Jul 28 10:52:56 CST 2018 ------------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2018-07-28 10:52:56.140
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.UnsupportedClassVersionError: org/eclipse/core/runtime/adaptor/EclipseStarter (Unsupported major.minor version 50.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:666)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
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BQ27510: Values of CC Gain and CC Delta
Part Number:BQ27510
Hi,
I am trying to write CC Gain and CC Offset values for bq27501 fuel gauge IC. As per the data flash summary, CC gain Data Flash to EVSW Conversion is EVSW=4.768/DF
So for example, I want EVSW value=10.021
My DF=4.768/010.021=0.4759
Hence I tried to write the 0.4759 using I2C mode and checked the same in bq evaluation software whether write was successful or not.
The software throws error as "The value you entered is not allowed because it results in code(decimal) 11 Division by zero."
Similar is the issue with the CC Offset. Kindly help if anything related to data types has to be taken care while writing.
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BQ27542-G1: What is the FID?
Part Number:BQ27542-G1
Could you please help to find out the fid of BQ27542-G1? Currently it always failed when the program ran to add_slave().
Original thread link: e2echina.ti.com/.../158314
/**
* struct w1_family - reference counted family structure.
* @family_entry: family linked list
* @fid: 8 bit family identifier
* @fops: operations for this family
* @refcnt: reference counter
*/
struct w1_family
{
struct list_head family_entry;
u8 fid;
struct w1_family_ops *fops;
atomic_t refcnt;
};
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BQ40Z50: Cell depleted to 2.1v after 2 days in CUV, is the device sinking current?
Part Number:BQ40Z50
Changed chemID and discharged the pack till CUV protection activated in Friday, load was removed. In Monday there was a cell depleted to 2.1v.
CUV SUV set to 2.9 and 2.5. Screenshot was captured in Monday. There were discharged current applied to all 3 cells after CUV was enabled.
It seems the cell was depleted because bq40z50 was sinking current from cells. Shutdown voltage was in default 1.75v.
PS shutdown voltage = 2.5, PWR_SAVE_VSHUT is not enabled.
Is this issue caused by the quiescent current from bq40z50? Will set PWR_SAVE_VSHUT =1 and increase shutdown volatage = 2.6 helps?
Original thread link: e2echina.ti.com/.../158277
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BQ34Z100-G1: Update status issue
Part Number:BQ34Z100-G1
BQ34Z100-G1 update status always stuck at 0x04. Monitored a 6mA current from computer after the pack was fully charged and VOK was not cleared after 2 hours, update status still in 0x04, How to fix this?
Original thread link:e2echina.ti.com/.../158236
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BQ40Z50: CHGFET or DSGFET doesn't turn ON/OFF when triggered from BQStudio
Part Number:BQ40Z50
Hi,
I'm here to ask about FET control on hardware. Why DSGFET or CHGFET doesn't turn ON/OFF while triggered from BQStudio ? When i toggled ON CHGFET, XCHG register shows green and CHG red. I measured on Vgate, the voltage is 12.38Volts. When i toggled OFF CHGFET, XCHG register shows red and CHG is green, but the voltage doesn't go down to near 0V. I measured it at 12.20 Volts. And it happened same on DSGFET. What is wrong with my design ? Because of grounding or something else ?
Here i attached my design in ZIP file document.
Kindly Please answer this question.
Thank you.
Best Regards
Aji Santoso(Please visit the site to view this file)
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BQ34Z100-G1: BQ34Z100-G1. FCC Changes
Part Number:BQ34Z100-G1
Hi,
I am using a BQ34z100-g1 with an 8s2p LiFePO4 batteries. The nominal capacity of the battery is 6400mAh.
I have obtained the golden image of the battery and load it in the bq24z100-g1. I have tested the bq34z100-g1 performance during two weeks in a laboratory functional prototype.
I was surprised to see the changes in FCC have been bigger than expected. Here I have a record of the evolution of different parameters.
First column is date of each record.
Second column is SoC of the battery
Third column is voltage battery at the moment of the record.
Fourth column is current battery at the moment of the record.
Fifth column is nominal capacity of the battery.
Sixth column is FCC of the battery.
Seventh column is max error in SoC stimate.
The temperature of the battery has been always between 20 and 27ºC.
As it can be seen, FCC values can vary in more than 5% (6458mAh on 13/7/2018 and 6081mAh on 24/07/2018) in only 2 weeks.
What can be those high variations due to?
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BQ40Z50-R2: Current measurements issue even after calibration
Part Number:BQ40Z50-R2
Hello,
We have strange issue with bq40z50-R2 BMS IC current measurement (Rsense=2mOhm).
Problem description:
1) Calibrated (through Battery management studio GUI) BMS shows current values with ~15% error after cell pack is disconnected and connected again, or if we copy *.srec and *.gg files from calibrated board to other (with same component values) prototype board and use same cell pack as in board #1.
2) If we calibrate BMS again, then current measurment accuracy is less than 1%, until we do p.1)
What could be the reason of such behavior?
If you need any further details (step-by-step problem description, Schematics, etc.) , please let me know.
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