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.

TPS54218 Soft Start Non-linearity

Other Parts Discussed in Thread: TPS54218

Hello E2E,

I have a customer using the TPS54218 who is seeing some strange behavior on startup.  When they increase Css to lengthen out the softsart time, they will see that the Vout ramp-up wont be linear.  Instead, it looks as if there is no soft start at all (see generic image below). Have you noticed this before?  Any suggestions to help rectify this? 

Image result for output of a buck converter on startup

Thank you very much!

Russell