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TPS7B63-Q1: Power good threshold accuracy

RYO
Intellectual 2000 points
Part Number: TPS7B63-Q1

Hi all,

I have two questions about power good accuracy. Can you answer to those?

  1. Can you tell me how to calculate the accuracy of power-good threshold? If the output is fixed-5V, is it (5V±2.5%) x V(PG_TH) or 5V x V(PG_TH)
  2. Can you tell me how to calculate the power-good threshold including hysteresis when the output goes low? Does V(PG_TH) of 89.6~93.6% include the V(PG_HYST) of 2%_typ? Or does the spec mean the threshold can be under 89.6% when the output voltage goes low?

Regards,
RYO

  • 0
    TI__Mastermind 23361 points

    Hi Ryo, 

    1. Can you tell me how to calculate the accuracy of power-good threshold? If the output is fixed-5V, is it (5V±2.5%) x V(PG_TH) or 5V x V(PG_TH)

      It should be 5V x V(PG_TH). 

    2. Can you tell me how to calculate the power-good threshold including hysteresis when the output goes low? Does V(PG_TH) of 89.6~93.6% include the V(PG_HYST) of 2%_typ? Or does the spec mean the threshold can be under 89.6% when the output voltage goes low?

    The PG TH may vary in that range, but the HYST is generally 2% from the actual PG TH. Does it make sense? 

    Regards, 
    Jason Song