Part Number:BQ27742-G1
Dear TI Experts,
Is there a easy way to enter HDQ? BQstudio don't have I2C to HDQ button for BQ27742. In another post suggested using EVSW to enter HDQ mode, however, I only found EVSW for BQ30Z554-R1 on TI website. Thanks a lot.
Part Number:BQ4050
Hi, Team.
After 4050 CEDV to 7%, the power will almost never fall again (or drop very slowly) until it is close to over-discharge. Before 7%, it fell by one percentage point in 1 minute and a half. When it reached 7%, and lasted for 19 minutes, did not drop to 6%. After that, it went straight to the over-discharge.
This is a 51.2 ampere capacity, which is done in 1/2 ratio.
Below is the configure information. Thanks
Hi, Team:
Here is an issue from E2Echina:
The ChemID noticed: successfully program the chemistry. The high frequency resistance parameter of this chemical ID is not available and is not programmed.
What does it mean? What is the impact on the performance of the fuel gauge? Will low capacity be inaccurate and jump?
Is there any suggests or solution?
And I'm trying to contact the customer and find out detailed product he used.
Part Number:BQ40Z50-R1
Hi,
When using BQ40Z50, the activation condition after shut down according to the datasheet is that, the Pack pin voltage should higher than 2.05V~2.45V, then to activate the device after shutdown.
Is there any requirements about the voltage duration and current? Here is a concern that after plugging in the charger, if voltage power up last for short time or the current is too small, is there any chance to make it does not work to activate?
Best Regards
Gene
Part Number:BQ40Z50-R2
Hi,
For the pack voltage after using 11471mv calibration, then turn off the discharging MOS, the BQstudio still shows 200mV, but in real multimeter it measures 0V, how to deal with the low voltage calibration, what can I do to adjust?
Best Regards,
Gene
Part Number:BQ40Z50-R2
now i want use a gpio from msp430 to control the pres pin of bq40z50R2. dataflash NR bit = 0. now i can control the bq CHG DSG MOS on or off use the pres pin
but when i output a high level use a weak pull up to pres pin, the bq DSG CHG off , why i measure the vol at two ends of resistor（100R） ,the vol is very low?
void battery_remove(void)
{
P3REN |= PRES_N_MCU;
P3DIR &= ~PRES_N_MCU;
P3OUT |= PRES_N_MCU; //input and out = 1, high , pull up, remove
}
and i see the pres pin have a internal pullup resistor, so i remove the 100R , and measure the pres pin leave it floating,, the vol also very low , i found a pluse per sec, 0.02V and 0.0V toggle.
i can't get measure a high level , so i feel this not stable , tell me why? thank you very much!!
Part Number:BQ34Z100EVM
Hi,
Since BQ34Z100 is NRND, but we don't have BQ34Z100-G1 EVM. Can we use BQ34Z100EVM and replace BQ34Z100 with BQ34Z100-G1 to do the evaluation?
Is the software the same for these two devices?
Hello,
Would you have any C sample code (in user space) showing how to use these linux drivers for BQ27XXX battery ?
http://www.ti.com/tool/BQ27XXXSW-LINUX#descriptionArea
I would like to use HDQ but I dcan't figure out where I can specify the GPIO used to this driver...
Thank you for your help.
Julien
Part Number:BQ27542-G1
Tool/software: Linux
Hello
the seal key is 20180101. I try to unseal bq27542 by commands write them by i2c code. fist I send 0x0101 to 0x0000 and then send 0x2018 to 0x0000, 0xffff to 0x0000, , oxffff to 0x0000. after finish all these, read out the 0x0000, the value is 0x608b, still be sealed. Did I miss any more steps ?
Part Number:BQ34Z100EVM
Hi, I got some problem on bqstudio again.
Here's my setup
Battery Samsung ICR18650-30B (8*3000=24000mAH) (Connected in parallel)
I tried to charge and discharge several time, do as the reference manual suggested.
But i can't update the status at all.
I definitely have enough rest time, charge to full and discharge to empty.
Is there any possible factor that can affect learned status update?
Part Number:BQ4050EVM-561
Hello,
I am trying to interface BQ4050EVM-561 with STM32F7 and fetch Batt. Pack Vtg and display on STM32F7 UART.
How should I proceed in this.
The device address is 0x17 ?
And the register address of battery pack vtg is mentioned as 0x09 on 
Any specific tips?
Thank You,
Ameya
Part Number:BQ34110
The TRM does not mention needing to wait after writing to data flash (4.1.1 Write to DF Example).
Is it true that one can write to a DF location and then immediately read it back?
Or do we need to delay for the write to complete?
If so, how long?
Part Number:BQ34Z100-G1
My customer is looking for an explanation on how “Terminate Voltage” is qualified with the impedance track algorithm. Specifically they want to know for how long the battery voltage has to remain below the Termination Voltage setting before Remaining Capacity is set to zero. They’re unable to find any information in our literature regarding this.
Part Number:EV2400
TI webpage has the following note for the BQ76940EVM eval board:
"Due to a temporary driver incompatibility issue with the EV2400, the EV2300 EVM is currently required to install the bq78350 firmware SREC on to this EVM."
Does anybody know if there is any solution for this TEMPORARY Driver incompatibility issue?
I am trying to avoid to buy a EV2300 due to:
"EV2300 is not supported for new designs and is replaced by EV2400 for new designs. EV2300 is not supported for 64-bit Windows (Windows 7 and newer). This product continues to be in production to support existing customers."
Part Number:BQ78PL116
Hi
iam using 14s32p battery pack. but while performing the short circuit test the various flags are ON mentioned below:
EUV
CUV
PV
cell 1 voltage 2000mV
cell 2 voltage 2000mV
But actual voltage of cell 1 and cell 2 is 3982mV & 3978mV. the remaining cell voltage is correct.
still i am able to communicate with the IC.
This is happens 4th times when due to short circuit test iam getting 2000mV then i need to change the IC.
But i am failed to understand why bq78pl116 unable to provide short circuit protection.
Even failed to achieve short circuit at 32 amps.
Part Number:BQ27742-G1
Dear TI Expert,
My customer is using BQ27742, their plan is doing learning cycle and configration via I2C, and last step to change to HDQ mode and seal. Now they finish above process with BQStuido.
They want to know if there is way to pack all process to a single image, so they can make mass production with this image in another customized equipment? Thanks a lot.
Part Number:BQ34Z100-G1
Goodmorning,
I need to properly select the CHEMID in BQ34Z100-G1 I used for my new design. The last revision of TI database contains exactely the cell model I'm using, but the version 1.3.54.1 of BQSTUDIO doesn't allow the update to such CHEMID (6118) because it is necessary to use the BQSTUDIOTEST for managing such recent CHEMID (see this post: https://e2e.ti.com/support/power_management/battery_management/f/180/t/707989?BQ34Z100-G1-BQ-Studio-Chemistry-Updater-Error-1484 )
So I've installed the BQSTUDIOTEST on my Win7-64 pc, but it doesn't work: when I launch the program with the EV2400 and target board (with BQ34Z100-G1) connected, some issues occour:
Everything works well if I switch back to the previous version of BQSTUDIO.
How can I fix this issue? I need that for updating the CHEMID in my project!
Thank you very much and best regards
Matteo
Part Number:BQ34Z100-G1
Tool/software: WEBENCH® Design Tools
Hello
I connected the bq34z100-evm to msp430 launchpad, I written the code to read the flash parameters of bq34z100-g1, i able to read flash parameters , by connecting the bq34z100evm to ev2400 and studio software able to read flash parameters , and immediately connected to the our launchpad able to read flash parameters at that time , but problem is after resetting the msp430 launchpad and bq34z100evm not able to read and
I am trying to saying that My code is working , i able to read the flash parameters , when the i2c pins of ev2400 removed and connected to msp430 launchpad ,at that i able to read flash parameters .
my code fomat is :i2c_wite(0x61,0x00)
:i2c_wite(0x3E,0x68)
i2c_wite(0x3F,0x00)
for(i0;i<32;i++)
{
readdata[i]=i2c_read();
}
what thing to be add extra , so that i able to read even after restiing device also.
Part Number:BQ78350
I design my gauge board refering to document tidrqy7.
In my design, I dIdn't use the precharge function， and I only use Q1 and Q5 to control discharging and charging.
When I apply a load to PACK+ and PACK-， the out voltage of PACK+ of PACK- drops down to 9V， while the the voltage is 20V before I apply the road.
The waveform of Vg of Q1 and Q5 is showed as follows.
When I removed Q1 and Q5，Vgs of Q1 and Q5 are all 10V.
I can't find the reason of the drop of voltage and the reason of the waveform of Vg.
Could you find out the reason causing the problems?
