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TPS53316: PowerGood (PG) & Enable (EN) Functionality

Todd Magee
Intellectual 1440 points
Part Number: TPS53316

Does PGood de-assert if Enable is de-asserted?

It does not explicitly state this in the datasheet, but Figure50 (Turn off Waveform) shows that PGood follows Enable.

 

Am I correct in assuming that PGood de-asserts when Enable is de-asserted? And it does not solely depend on Vout?

  • 0
    TI__Genius 14876 points

    Hello Todd,

    Thank you for this valuable feedback!

    Power Good Behavior is not very well defined here, we need to work on that. You are correct, PGood de-asserts when Enable de-asserts.

    Behavior would need to be double checked on EVM, but PG does not only depend on Vout.

    My assumption, like other device are working, if you encounter a protection feature as you can see at the top of page 6(OVP, UVP, Thermal shutdown)  then PG will de-assert.

    Are you using this device at the customer? I would recommend you to look at newer devices as stated below. 

    Thanks a lot!


    Best Regards,
    Dorian

  • 0 in reply to Dorian Brillet de Cande
    TI__Genius 14876 points

    Hello Todd,

    I haven't heard back from you!

    Were you able to confirm behavior PG behavior?

    Do you have any further questions on this topic?

    Let me know.

    Thank you,

    Dorian