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TPA6211T-Q1: Short to Battery, Short to GND

Haury Zhou
Expert 7076 points
Part Number: TPA6211T-Q1


Hi team,

Whether the output pins (Pin5 and Pin8) of TPA6211 support short  to ground or short to battery when there is audio signal output or no audio signal output?

BRs,

Haury

  • 0
    TI__Guru** 111065 points

    Hi Haury,

    This device protection will operate the same regardless if there is an audio signal present.
    Please notice that shot to battery is only supported up to VDD potential, higher voltage protection is not featured.

    Best regards,
    -Ivan Salazar
    Applications Enginee

  • 0 in reply to Ivan Salazar
    TI__Expert 7076 points

    Hi Ivan,

    Do you mean that the device have short to Bat and short to GND function?

    BRs,

    Haury

  • +1 in reply to Haury Zhou
    TI__Guru** 111065 points

    Hi Haury,

    The protection of this device could be considered a thermal protection. Basically, if a short occurs, it will cause overcurrent which in turn would heat up the device, then it gets protected.
    In any case, the outputs of the device may sustain voltages only up to VDD of the same device, but not higher voltages.

    Best regards,
    -Ivan Salazar
    Applications Engineer

  • 0 in reply to Ivan Salazar
    Prodigy 70 points

    Hi Ivan，

             According to the requirements of the project, the output end of TPA6211T-Q1 needs to perform short to Battery(12V) and short to GND experiments. If the coupling capacitance is added to the output end to meet the experimental requirements, will the output of audio signals be affected?

    Best regards，

  • 0 in reply to LIUHUAN
    TI__Guru** 111065 points

    Hi Liuhuan,

    Adding series capacitors at the output should not affect the resulting signal considering it is differential and the DC offset is cancelled anyways.
    However, you may test this thoroughly as any extra capacitance in the signal path could cause pop during power up or power down.

    Best regards,
    -Ivan Salazar
    Applications Engineer