• Join
  • Sign In with my.TI Login
Texas Instruments
  • Products
  • Applications
  • Tools & Software
  • Support & Community
  • Sample & Buy
  • About TI
Sample & Purchase Cart Sample & Purchase Cart
  • Search
  • Advanced
TI E2E™ Community
  • Support Forums
  • Blogs
  • Groups
  • Videos
  • 简体中文
  • More ...
TI Home » TI E2E Community » Support Forums » Power Management » Battery Management » Battery Management - Gas Gauge Forum » bq78PL116 PowerPump purpose
Share
Battery Management
  • Forums
  • Announcements
  • Files
  • E2E Wiki
Options
  • Subscribe via RSS

Forums

bq78PL116 PowerPump purpose

This question is answered
Bob White
Posted by Bob White
on May 08 2012 12:01 PM
Intellectual660 points

In the battery packs that I have tried so far on my bq78PL116EVM, the power pump just barely keeps the weakest cell alive to the end of discharge.  This weakest cell is the one that terminates the discharge.  This makes me think that I need a more powerful PowerPump circuit.

On the other hand, it has always been cell # 2 that is the weakest.  Is it just coincidence that this is the cell that powers the bq78PL116, or is the PowerPump really only needed to make up for the power used by the '116?

Bob

 

Powerpump bq78PL116
Report Abuse
  • Reply
You have posted to a forum that requires a moderator to approve posts before they are publicly available.
All Replies
  • ThomasCosby
    Posted by ThomasCosby
    on May 08 2012 15:21 PM
    Verified Answer
    Verified by Bob White
    Genius13630 points

    Bob,

    Cell 2 does provide the current for the internal regulator that powers the PL116 device, but it is a coincidence that this cell has most of the pumping action on your pack. I work with a lot of packs and have found cell balancing across all of the cells.

    Regards

    Tom

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
TI E2E™ Community
  • Support Forums
  • Blogs
  • Videos
  • Groups
  • Site Support & Feedback
  • Settings
TI E2E™ Community Groups
  • TI University Program
  • Make the Switch
  • Microcontroller Projects
  • Motor Drive & Control
Other Communities
  • Deyisupport
  • Designsomething.org
  • beagleboard.org
  • TI on Element 14
  • TI on TechXchangeSM
Other Technical & Support Resources
  • WEBENCH® Design Center
  • Product Information Centers
  • Technical Documents
  • TI Design Network
  • TI Technical Articles
  • TI Training

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.

Follow Us Texas Instruments on Facebook Texas Instruments on Twitter Texas Instruments on LinkedIn Texas Instruments on Google+
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