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TPS62866: TPS628660BYCG sample

Vincent Chen64988
Expert 4480 points
Part Number: TPS62866

Hi Team,

My customer is design TPS628660BYCG in his SCH but I cannot apply sample in TI Store and this part is still in preview state.

1. When the sample will be ready for applying?

2. What is the MP schedule?

Its a emergence case, if we cannot provide above schedule or the sample/MP schedule cannnot meet customer project's schedule then R&D will choose competitor's solution. Please response this questions asap since R&D have to make the final decision by this Friday.

Besides, there are two questions need team's comment.

1. Power good is low active, PG pin outputs to high level right after VIN is supplied, correct?

2. After enabling this part, why PG drop to low level for a while before Vout is established?

Thanks a lot.

Vincent Chen

  • 0
    TI__Genius 14876 points

    Hello Vincent,

    I will contact you directly via email for further discussion on sampling dates.

    Thank you very much!

    Regards,
    Dorian

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

    Hello Vincent,

    Regarding PG waveform, the pin where this waveform is probed is called VSET/PG/.

    VSET will allow customer to set output voltage to specific value by populating a certain resistor value. (see details in Table 1 of datasheet).

    What happens before startup is, a current is sent from VSET to GND through R1.

    A voltage will result from that, to make sure TPS62866 is doing a proper reading of the outside resistor to set correct output voltage, two current levels are used to double check this value and make sure correct output voltage is supplied.

    What you see on PG waveform is this behavior, with two voltage levels induced by the two current levels used for reading.

    Thanks a lot!

    Regards,
    Dorian