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BQ78PL116 16 serials POV Threshold Set 68000mV,Can't set

john xiao
Intellectual 470 points
Other Parts Discussed in Thread: BQ78PL116

Dear all:

         I have a question about BQ78PL116 16 serials POV Threshold setting.The Max voltage is 65535mV,but when I  set as 68000mV,system show value out of range.Please help me solve the problem,Thanks a lot.

         Johnxiao  2011.08.05

  • 0
    TI__Intellectual 1505 points

    Hi John,
    For Packs Above 65535mV use VScale=0001

    The following is a section from the TRM (http://focus.ti.com/lit/ug/sluu481/sluu481.pdf) Section 5.1.6

    5.1.6
    When the user elects to set the VScale bits in the SpecificationInfo(0x1A) Command to 0001 it means that
    the reported Voltage(0x09) is actual pack mV divided by ten. This allows pack voltages greater than
    65535mV to be reported. If VScale is set to 0000, then Voltage(0x09) is actual pack mV.
    It is the responsibility of the SMBus Host Controller to interpret this value correctly.

     

    Please let me know if you have tried the above and are still experiencing problems.

    Regards,

    Ben

     

  • 0 in reply to Benjamin Sarpong
    Intellectual 470 points

    Hi Ben:

               I have read what you said chapters,and I have set VScale is 0001,the reported Voltage(0x09) is actual pack mV divided by ten.Thanks a lot.

    Best Regards.

    john xiao