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Original question:

BQ769142: Cell connection for 10s

BQ769142: Grounding reference for signal lines.

Bryan Sharp
Prodigy 110 points
Part Number: BQ769142

In the reference schematic and development board PGND is used on the signal headers as seen in the image.

Why is PGND used here instead of VSS?

  • +1
    TI__Guru* 77343 points

    Hi Bryan,

    If the battery pack needed to communicate externally, usually there will only be I2C pins and PACK-/PACK+ available outside of the pack. PGND will be close in value to BAT-, they will differ only slightly when there is high current.

    Best regards,

    Matt