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Original question:

BQ25756: MPPT tracking

BQ25756: When the battery is charging, will the system's MPPT SCAN affect charging?

Marco Liu
Prodigy 40 points
Part Number: BQ25756

Tool/software:

When the battery is being charged, if the system performs MPPT SCAN to adjust the maximum charging power, will it affect the charging process?

When the battery is being charged, if the system performs MPPT SCAN to adjust the maximum charging power, will it affect the charging process?

  • 0
    TI__Expert 5985 points

    Hi Marco,

    If the system performs the MPPT SCAN while charging, the charging process will be temporarily interrupted. For the full panel sweep, the device needs to find the open circuit voltage, which means that the device will stop current completely. The sweep will also pass through different power levels of the solar panel, which will limit the output power for charging.

    I recommend looking at "Figure 8-6. Maximum Power Point Tracking," "Figure 9-12. Max Power Point Tracking (MPPT) Full Panel Sweep," and "Figure 9-13. Max Power Point Tracking (MPPT) Perturb and Observe" in the datasheet to see the full effect of this.

    Best regards,
    Michael