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About BQ76PL536 Automatiic Cell Balance

March Jasper
Expert 2340 points
Other Parts Discussed in Thread: BQ76PL536, BQ76PL536A

Hello

Now I thinking use PL536 for Cell Balance system.

But I have question, About this device,

This is my thinking control flow.

Step 1    Host side send sometiing Seting data to PL536.

Step 2  PL536 can possible start cell balance by self automaticaly each time without Host Control.  

My mean, after Host side send commnad , PL536 no need cell balance commnad each time.

Cell banace automatically doing by self  , no need  Command each time for Cell balane.

Is this correct ?  but , if can possbile automatically Cell balance , could you tell me this

automaticaly  cell banace without Host control each time?

Regard   Jasper

  • 0
    TI__Genius 10785 points

    Hi Jasper,

    You have to send commands to PL536 each time you start the cell balancing.

    cell balancing time is 1sec to 63mins. if you set cell balancing time to 10mins then it will balance for 10mins. You don't need issue another command for 10mins.

    When 10mins expires then you need to send another command to start the cell balancing again.

    Roger

     

     

     

  • 0 in reply to Roger Hwang
    Expert 2340 points

    Dear Roger

    Thanks for this replay.

    I have other questioin abot  this device.

    This device data sheet has Sample Schematic for   three   bq76PL536 connected. 

    For Instance Data Sheet Figure 16,17,18,19   with three bqPL536 on schematic.

     

     But I want to know  " What is each PL536 Device address? "

    Because of I want to control each PL536 with connected Battry.

     

    I red Figure 12  Simple Address Discovery and Assignment Algorithm.

    But I can not understnad about this mean by my  "Brain".

    Could you tell me about for easy find  Device address at several PL536 device connected.

    I want connect to   "Eight"  PL536 at Sysytem with 1 control Host System. 

    Thnaks and Regard

    Jasper

  • 0 in reply to March Jasper
    TI__Genius 10785 points

    HI Jasper,

    Get the Bq76PL536A datasheet. Goto Figure 13. This is newer version of Simple Address Discovery and Assignment Algorithm.

    I think you will find it much easier to understand. Let me know if you can't follow this flow then we need to have one to one 30min session.

    Take a look.

     

    Roger 

  • 0 in reply to Roger Hwang
    Expert 2340 points

    Hi Roger

    Thanks a lot meny help.

    Now I checked Figure 13 again.

    But I can not understand for this Unique Addressing Found System.....

    > Let me know if you can't follow this flow then we need to have one to one 30min session.

    About this one , Can possible provide to Software Engineers for  Sample Source Code

     "Automatic Address  Discovery  and Assignment Algrithm ? 

    I think other people has same question for this Address Discovery Algrithm.

    Thanks and Regard

    Jasper

     

  • 0 in reply to March Jasper
    TI__Genius 10785 points

    Jasper,

    http://focus.ti.com/analog/docs/litabsmultiplefilelist.tsp?literatureNumber=slaa478&docCategoryId=1&familyId=413

    Goto this link and you will find the MSP430 uC code for PL536. You will find actual code for addressing.

    Contact me again if you having problem with this.

     

    Roger

  • 0 in reply to Roger Hwang
    Expert 2340 points

    Hi Roger

    Very Thanks.!!   Customer understood about address.

    I have other question about PL536.

    Can possible Read /  Wrie internal EEPROM Area by user?

    Because of  Customer thinking write to PL536 internal EEPROM Data  as each battery ID.  

    Thanks and Regard

    Jasper

     

  • 0 in reply to March Jasper
    TI__Genius 10785 points

    PL536 has EPROM(OTP) not EEPROM.

    Goto Table3 Data and Control register Descriptions in the datasheet.  

    You will see GROUP3 and GROUP3 is eprom and mainly for 2nd level protections(OV, UV and OT).

    Customer can read/write(once) to these registers.