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BQ76PL455A-Q1: BQ76PL455ATQ1 query

Star Xu
Genius 9645 points
Part Number: BQ76PL455A-Q1

Hi

My customer have query about BQ76PL455A-Q1. They use 3 BQ76PL455A-Q1 chips to collect a total of 48 string monomers. The problems occurred in the process of use are as follows:

1. When doing the high and low temperature experiment, the high temperature is 85 ° c and the low temperature is -30 ° c. It is found that some single voltage jumps, as shown in the figure below:

2.  Use VP power supply VIO of BQ76PL455A-Q1. Measure 3 BQ76PL455A-Q1s batteries cell_top. The power consumption of the first 455 is 13ma, the power consumption of the second 455 is 6.2ma, and the power consumption of the second 455 is 5.7ma. BMS runs for a long time.

3. During battery collection, sometimes the voltage of the first battery is low.

Waiting for your reply.

Thanks

Star

  • 0
    TI__Genius 17370 points

    Hi Star,

    Since I am assuming this is a custom hardware build, we will need to examine much more information in order to understand these issues. Can you provide the full schematics to start? And please clarify question 3), is the accuracy error low or is the cell itself low?

    Regards,

    Taylor