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TPS53622: POUT

Julian Chen
Expert 2550 points
Part Number: TPS53622

Hi E2E,

Could you kindly let us know how to calculate POUT in IC?

We read the register as below, but we find POUT not equal IOUT*VOUT.

  • 0
    TI__Genius 11095 points

    Hi Julian, Some small amount of difference is normal because

    (1) READ_VOUT is reporting in VID mode (5mV LSB), but TPS53622 internally has higher resolution capability, which it uses for the POUT calculation. Mabe try to read MFR_SPECIFIC_04 (Linear11 mode) to get a more clear idea. 

    (2) READ_IOUT and READ_VOUT continuously update and have different filtering rates. So just reading the VOUT and IOUT through PMBus does not necessarily give the exact value used by the internal calculation, since the readings do typically have a few LSB of noise in them on a real system.