Part Number: BQ27750
during development of a new product which includes the TI BQ27750 chip we were facing that the device performs an autocalibration for the "cc auto offset" parameter from time to time. From the BQ27750 technical reference document we now know that this autocalibration will be performed on entry to sleep mode. The question is if the following parameters behaves equal to the "cc auto offset":
"cell gain", "pack gain", "cc gain", "capacity gain"
I want to check if these parameters will be more or less dynamic changed via auto calibration when customer use our product or if these parameters are fixed and will only be calibrated one time during development?
If you need more informations to answer my question please feel free to ask me.
Many thanks in advance and with best regards,
The calibration is for the offset. The gain parameters are using the calibration GUI.
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 Kang Kang:
Hello Kang Kang,
many thanks for your reply.
We already know that the calibration will be performed for the offset.
But the question is if those parameters described above behaves like the "cc auto offset" paramerter which will be calibrated automatically when device entry to sleep mode or under any other conditions.
Let me try to frame my question another way:
Will the values of the parameters described above be changed during product lifetime automatically (due to auto-calibration or something else) or are these fix values and only be configured one time at the beginning "by hand".
In reply to Marcel Fischer:
The autocalibration only occurs for cc offset. The rest of the paramaters you listed stay constant and do not get automatically updated. Are you seeing them automatically updated without you running a calibration routine?
In reply to Onyx Ahiakwo:
short question, short answer - many thanks! :-)
I don't see any troubles at the moment it was more a general question which you have fully answered.
Thank you and best regards,
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.