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TPS54360B-Q1: There is sudden in-rush current not powering up the amplifier

Partha Sarathi
Prodigy 10 points

Part Number: TPS54360B-Q1
Other Parts Discussed in Thread: TPS54360

Hello,
We are currently using TPS54360B-Q1 regulator and TAS5760MTDAPRQ1 amplifier. Due to sudden in-rush current, the regulator is not able to power up amplifier properly. Can you please help ?Circuit.docx 

  • 0
    TI__Mastermind 26682 points

    Hello Partha

    Is TPS54360 going into current limit operation? can you share some waveforms as well on following node?

    1. Vin
    2. SW
    3. Vout

    Additionally check following  

    1. If you are using power supply for TPS54360 input, check its current limit higher than 1.5 x Iout_max*Vo/Vin
    2. Monitor EN if it is going below enable threshold

    Thank you

    Regards

    Onkar Bhakare