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TPS546C20A: PMbus

user1932012
Intellectual 750 points
Part Number: TPS546C20A
Other Parts Discussed in Thread: TPS546C20

We are using 2pcsTPS546C20A, using interconnecting method, excuse me two PMBus we how to connect, is it using two groups of PMBus, if only monitor a group of PMbus how to connect, my input is 12VDC, output is 5V70A

  • 0
    TI__Guru**** 191445 points

    Mark,

    For stackable operation on TPS546C20 is set as master and the other is set as slave by connecting the FB pin to BP3.  Output voltage feedback is to the master device only and it hares that information with the slave device thru the VSHARE and ISHARE connections.   The PMBus is shared.   Details are in the datasheet in section 7.3.1.  Let me know if you have further questions.