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LTC6804-1 balancing

Category: Hardware
Product Number: LTC6804-1

Hello, we have been designing BMS circuit, however we have faced with some problems. Firstly we can't do balancing ,why? what could problem be?.And secondly, when we are doing circuit tests during voltage reading, we try it with 6 cell,but interestingly get 12 cell values. I can't understand why? Could anybody explain? Thanks in advance.



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[edited by: GenevaCooper at 1:53 PM (GMT -4) on 19 Apr 2023]
  • Firstly we can't do balancing ,why? what could problem be?

    Are you trying Balancing with Internal MOSFETs or using external MOSFETs? Are you reading back the DCC bits of the Configuration register the same as what you have written into the register to enable Discharging? 


    And secondly, when we are doing circuit tests during voltage reading, we try it with 6 cell,but interestingly get 12 cell values. I can't understand why? Could anybody explain?

    LTC6804-1 has 12 Cell Input channels for the measurement; accordingly, you have 12 cell voltage results in the result registers. Irrespective of whether you sample/convert those channels using the ADCV command, you will be able to read back all 12 Result voltage values from the last conversion of the channel or at least the default values from the result registers.