BQ3060 SMB comms stops working

This question is not answered

Posted by anthony kahl

on Feb 23 2012 23:04 PM

I'm using a BQ3060 (V14) batt management IC in a circuit almost identical to the typical application schematic, it is integrated into a 4S LiFePO4 pack. I'm seeing pack communications die sporadically, full disconnection of the cells from the BQ seems to be the only way to recover it (obviously not practical). My controller only executes reads (no writes or commands) and otherwise the non-communicating BQ3060s seem to continue operating fine (charging current seen etc), so it seems it's the SMB front-end that has the problem. Under what conditions might this failure occur? Is it possible that a mis-configuration of the .gg file might cause this?

Thanks

Anthony

All Replies

Posted by Garry R Elder

on Feb 29 2012 15:34 PM

Intellectual2020 points

Hi Anthony,

We have not seen this kind if loss of comm requiring a power reset. Have you tried applying a charger to recover comms? Can you share your schematic and .gg file for review?

Thanks

Garry

TI E2E™ Community

TI E2E™ Community Groups

Other Communities

Other Technical & Support Resources

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. 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 respect to these materials. 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.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.