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TPS54560B: Possibility of burning

Sadanori Kato
Guru 36540 points
Part Number: TPS54560B

Hi,

If the power supply is powered up while VIN and BOOT are short-circuited, may burning occur?

Best regards,
Kato

  • 0
    TI__Mastermind 34035 points

    Hi Sadanori

    If VIN and BOOT is shorted, the Cboot cap maybe charged up to Vin voltage and then damage BOOT pin if Vin is too high. on the other hand, there is no enough BOOT to SW voltage to drive high-side switch gate for fully turn-on, this may damage high-side FET because of operating out of SOA.

    The burning may occur if too high EOS energy cause hard circuit short and power supply has no proper over current limitation.

    B R

    Andy

  • 0 in reply to Andy Chen
    Guru 36540 points

    Hi Andy-san,

    Thank you for the information.

    I understand.

    Best regards,
    Kato