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TAS5805M: PVDD DVDD

Eric(Dongguan) Zhu
Intellectual 1450 points
Part Number: TAS5805M

when the customer give PVDD=19V, and make PDN/ low, the DVDD has output voltage about 1.8V, this impact other circuits at start-up stage.

can you explain why DVDD has a output voltage when PVDD=19V and  PDN/ is low?

  • 0
    TI__Mastermind 32030 points

    Hi Eric

        There's a lot of LDO inside of our devices, and the circuit not totally isolate from each other. This voltage they test out shouldn't have a very large power, also the PVDD and DVDD usually power up together. What trouble are they seeing for now?