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TPS65262-1: Unused Channel

Nikhil Pai
Prodigy 10 points
Part Number: TPS65262-1

I'm not using BUCK3 and I require the Pgood signal. If I want to use the automatic sequencing (MODE = HIGH), how should I connect the following pins:

VIN3

BST3

LX3

FB3

EN3

If I choose not to use the automatic sequencing (MODE = LOW), how does the above change?

Regards,

  • 0
    TI__Genius 9550 points
    hi Pai,
    Setup as below:
    if BUCK3 is unused, setting as below:
    Connect FB3 to COMP3;
    Connect COMP3 to GND via 10k and 1nF (series)
    EN3 floating or tie to high
    SS3 floating
    PVIN3/LX3/BST3 floating
    The PGOOD will detect BUCK1/2's operation status.

    Either MODE low or high, the setup is same.