• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 218 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TPS62813-Q1: Vout build up time

Roy Chou1
Genius 16055 points
Part Number: TPS62813-Q1

Hi team,

Could you let me know how to calculate the Vout build time(10%-90%) when EN pin pull high? 

You could use EVM circuit for example.

Roy

  • 0
    TI__Genius 17291 points

    Hi Roy,

    TPS62813-Q1 device soft start up equation will help to evaluate the tramp time.

    According to soft start up capacitor selection you can vary it. Current EVM is set for star up time of populated with 4.7ns soft start up capacitor(Css) and according to that the soft star up time set is 1ms.

    Let me know if you need help for more information!

    Best regards,

    Tanvee

  • 0 in reply to Tanvee
    TI__Genius 16055 points

    Hi Tanvee,

    The SS time is internal VFB ramp time. Is this SS time similar to Vout build time?

    Roy

  • 0 in reply to Roy Chou1
    TI__Genius 17291 points

    Hi Roy,

    Output voltage build up depend on soft start up and enable pin configuration.

    If enable set high then after typical  delay of 200us vout starts build up according to slop set through soft startup capacitor and estimated of output voltage would be similar to soft start up capacitor selection.

     Thanks,

    Tanvee

  • 0 in reply to Tanvee
    TI__Genius 16055 points

    Hi Tanvee,

    Thanks for information. I would like to ask further question. 

    Do we have LV buck which doesn't have output discharge function? (auto-grade, 3A)

    Roy

  • 0 in reply to Roy Chou1
    TI__Genius 17291 points

    Hi Roy,

    We have OTP option for this device with output discharge off. 

    We need more information regarding customer and their application. I will contact you through mail for further discussion.

    Best regards,

    Tanvee