• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 375 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

BQ27510: Lost USB connection while PWR568 ( BQ27QDK000EVM) was in idle

Yunfa Yang
Intellectual 515 points
Part Number: BQ27510
Other Parts Discussed in Thread: EV2400, BQSTUDIO

Hello,

I am using PWR568 Rev. A ( BQ27QDK000EVM) and Battery Management Studio (1.3.54.1) to exercise battery gauged by BA271510G3.  Everything seemed working fine till task completed or auto cycle was in relax phase, then USB connection would be lost, PC warned "USB device not recognized". I didn't run any script, I am wondering whether micontroller (MSP430) on EVM board hibernated in this condition, if so, how can I change configuration to avoid it?  Autocycle is supposed to be automatic, EVM board should not lost connection with BQ studio on PC,  I am confused.

BTW, all powers were good, 6V adapter is the one recommended in EVM manual.

Thanks,

Yunfa

  • 0
    TI__Guru* 76230 points

    Yunfa

    i would recommend you update the firwmare on your msp430 and the ev2400 firmware. pls see the post below for updating the gdk firmware.

    The link for the ev2400 firmware update is on the product device page.

    thanks

    Onyx

  • 0 in reply to Onyx Ahiakwo
    Intellectual 515 points

    Thanks Onyx, after firmware updated, USB connection issue seemed fixed.

    I have a question about SOH in BQ271510G3, currently I am running autocycle (BQstudio), but somehow SOH is always below 90% with my battery pack, and SOH status was updated to 03, auto cylce completed successfully. I am wondering if the reason could be that my battery pack is 1S2P ( 2 Samsung INR18650-30Q in parallel, chemistry ID 2085); I could change design capacity in bqstudio page Data Memory, am not sure what and how other configurations/settings should be changed for this 1S2P pack. Except battery cell configuration, what else could impact SOH?

    Regards,

    Yunfa

  • 0 in reply to Yunfa Yang
    TI__Guru* 76230 points
    You need to adjust your design capacity to be closer in value to what your FCC is to be able to get 100%
    thanks
    Onyx