Battery Management
Options

Forums

Why bq20Z95 can't communication and SBS show "SMB terminated" ?

This question is answered
Suren zhou
Posted by
on Oct 21 2010 04:37 AM
Intellectual275 points

Hello Everyone,

 We have a puzzle question need your help.

Recently, we have some field return battery pack (GG: bq20Z95), symptom is no communication and SBS show "SMB terminated".

1) Could you please tell me why the SBS show "SMB terminated" and what condition maybe the root cause?

2)Whether it can recover? Need what operation?

Thanks & regards,

Suren

bq20z80 bq20z70 bq20z90 bq20z95 bq20z75 bq20z40 EV2300 dll EV2300 USB Driver Battery Management BQ20Z45 BZ20Z45-R1 PRES
Report Abuse
All Replies
  • Mike_chute
    Posted by
    on Oct 22 2010 16:04 PM
    Intellectual825 points

    You Can measure the REG33 on pin 8 to see if you have 3.30vdc. That will tell you if the chip is alive. If the pack voltage gets too low it will go to sleep or shutdown. All smb communicaation will stop. The second concern is the SMB pins 18 and 19. With the EV2300 connected those pins should have 2.79 vdc. A low voltage could mean a damaged IC. 

     

    Hope that helps.

     

    Report Abuse
  • Suren zhou
    Posted by
    on May 11 2012 04:03 AM
    Verified Answer
    Verified by
    Intellectual275 points

    Dear Mike,

     

    Thanks for your reply.

    1. Voltage of key (REG and SMBD/C) pin and resistance of each pin are good.

    2. Maybe these issue caused by dataflash corruption issue.

     

    Suren

    Thanks & regards,

    Report Abuse

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.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile 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.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use