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TPS544B20：May I have some confirming item for TPS544B20 application ?

TAlex Wu
Expert 1180 points
Part Number: TPS544B20

Dear SIR:

May I have some confirming item for  TPS544B20 application ?

Regarding  TPS544B20 datasheet mention the pin 1 CNTL is Input pin .

Can we connect  TPS544B20 the  pin 1 CNTL  from Host any GPIO(GPO) pin  ?

(Or connect  TPS544B20 the  pin 1 CNTL  from What of Host ?)

Or Would you have any advice and (TPS544B20 the  pin 1 CNTL  from Host) reference circuit  for reference ?

Thanks

  • 0
    TI__Genius 14455 points

    Hi,

       As per section 8.4.4 of the datasheet, the Vih is 2.1V and Vil is 0.8V. As long as the GPO of the host can generate these voltage levels to represent a high/low, you should be able to interface it with the TPS544B20. By default the CNTL pin is active high. But its polarity can be changed by the ON_OFF_CONFIG register using PMBUS.

    Regards,

    Gerold