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BQ24298: System regulation in battery mode isn't happening at temperatures above 45 C.

Daniel Hein
Prodigy 10 points
Part Number: BQ24298

Tool/software:

We have a device utilizing the system output when VBUS is absent and only the battery is present. When the temperature exceeds 45 degrees Celsius, the system voltage is no longer regulated. Is there a register setting we need to address to correct this issue?

  • 0
    TI__Guru 57741 points

    Hi,

    Could you please provide the following for room temp and 45C respectively? You mentioned VBUS is absent please confirm below.

    1. The charger operating conditions such as VBUS (voltage at VBUS pin), IVBUS, VBAT (voltage at BAT pin), IBAT, VSYS, ISYS.
    2. All the register readings. The register readings help to understand the charge operating status and fault conditions if any.

    Thanks,

    Ning

  • 0 in reply to Ning T
    Prodigy 10 points

    Issue was unrelated, no further action needed.