Other Parts Discussed in Thread: BQ34Z100
Hello,
In the process of creating the Chemical ID of our battery cells, our company is following the technical reference SLVA725A untitled "Simple Guide to Chemical ID Selection tool (GPC)".
For better accuracy, it as been decided to measure the process using the evaluation board calibrated by Texas Instrument.
In this process, it is said: "4. Discharge the battery at C/10 rate until the minimal voltage (as specified by the cell manufacturer) is reached". (SLVA725A 3.2.4)
The cell is a LifePO4 that has a capacity of 105AH. Therefore, the discharge current shall be no less than 105/10=10.5A.
Here is our problem: the evaluation board used for better accuracy specifies a maximum current of 7A.
knowing that the sens resistor of the evaluation board is described as follow: R30: .010 Ω Resistor, chip, 1/2W, 1%, ±75 ppm/C°.
knowing the the adc range of the BQ34Z100-G1is +-125mV.
We understand that the current limit of the evaluation board is due to the maximum power of the sens resistor and not the current limit of the bq34z100 ( adc Range = +-125mV)
Our solution is to change that resistor for a stronger one that as the same value: WFMA2010R0100FEA
is it possible to do so?
