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BQ76920: Please help to confirm if the schematic diagram is OK.

Part Number: BQ76920

Please help to confirm if the schematic diagram is OK?

  • Hi Kevin,

    The schematic looks good. A few things to note:

    - A power filter capacitor is needed for the BAT pin. The EVM schematic uses a value of 2.2uF for this value, but it the datasheet range is from 1-10uF.

    - There is no diode needed on the BAT pin, but it is okay. Figure 12 in the datasheet shows the typical application circuit.

    - The components on the cell input filter are large. The 1k resistors will result in a low cell balancing current. I suggest using 100 ohms and 0.22 uF for the cell input filters.

    Best regards,

    Matt