This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: BQ76925EVM
I am having voltage reading problems on my BQ76925EVM. I am using the example code and just converting the ADC values to voltages as explained in the datasheet. I am measuring the voltages of a 6 cell LiPo battery. I have found that Cell 1 is consistently measuring lower when compared to a multimeter, measuring about 0.15V lower. The other five cells measurements match up to the multimeter. This has occurred over multiple batteries.
Is there any explanation to why this is happening?
"Please click "This resolved my issue" button if this post answers your question"
TI provides design resources and design advice (including technical, schematic, code and/or system review) “as is” and with all faults. All information in this or related correspondence is provided subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to WM5295:
To follow up:
There was no voltage drop between BATT- and Cell 0. Also, I have several of these chips and each one acts differently. One might have cell 5 be off and another cell 6. What could be the cause?
I know there is offsets that are set at the factory. I am trying to calibrate those to see if they better match the multimeter. Could the factory set offsets need to be changed depending on the battery used, or for any other reason etc? It is a 12000mAh LiPo.
In reply to Travis Miller34:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.