• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 592 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS22965: Vbias and Vin ramp up/down sequence

yf liao
Expert 1080 points
Part Number: TPS22965

Hi, is there requirement on the ramp up/down sequence between Vbias and Vin? 

Can Vbias ramp up first then Vin ramp up, or reversely Vin ramped up first, then Vbias ramped up?(Vin=1.8V, Vbias=5V). and how about ramp down sequence? 

  • 0
    TI__Genius 15710 points

    Hi Yf,

    The ideal power sequencing for this device is to make sure that both VBIAS and VIN are present before ON is toggled high or low. When turning on, this ensures the proper slew rate control. When turning off, this ensures that the QOD can be enabled. If you have control over your sequencing, then the sequence of VBIAS->VIN->ON for turn on and ON->VIN->VBIAS for turn off will work without issue.

    Thanks,

    Alek Kaknevicius