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Original question:

TPS54J061: schematic review

TPS54J061: Sharing VCC and VIN at 3.3V [TPS54J061]

Matt Qi
Expert 3030 points
Part Number: TPS54J061

Tool/software:

Hi team,

My customer wants to share the VCC and VIN at the same power rail at 3.3V.

Is there any risk?

And is there any time sequence requirement for the VCC and VIN? I only find that the VCC need be earlier than VIN/EN.

Thanks a lot, looking forward to your reply.

  • 0
    TI__Genius 10517 points

    Hi Matt, 

    There should be no issue. Yes, just needs to make sure that VCC is earlier than Vin/En. The En signal also needs to be high enough to reach the turn on threshold, but not directly connected to VIN. 

    Best,

    Ryan