• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 155 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.

TPS1HTC30-Q1: Power dissipation of the high side switch equation

Max Luc Balen
Prodigy 460 points
Part Number: TPS1HTC30-Q1

Tool/software:

Hi team,


I could not find much information about the power dissipation of the high side switch, TPS1HTC30AQPWPRQ1. All I could find is PT = IOUT 2 × RDSON + VS × INOM in equation 15 on the datasheet.

But Inom = (Vbb – Vout)/Rload and I think Vbb is the almost the same as Vout, can you point me to the right direction to find the power dissipation of this device; or did I misunderstand the equation?

  • 0
    TI__Mastermind 34935 points

    Hello Max,

    For the second part, this is mainly when the device is turning on into a capacitive load and VDS is going to be significant. If you are looking for steady state DC operation, you can ignore the second part of the equation because as you mentioned it is negligible.

    Best Regards,
    Tim