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Original question:

UCC28950: UCC28950

UCC28950: UCC28950

Neethu Joy
Prodigy 85 points
Part Number: UCC28950

Tool/software:

Hello,

Thank you for your response.

I have a doubt regarding the adaptive delay setting. In the datasheet, it is said that adaptive delay will be provided if connected to CS pin and if tied to ground it will be fixed delay. But in the reference diagrams, the pin is tied with the VRef Pin to make it fixed delay. Can you please provide a clarity on this. 

Regards

  • 0
    TI__Guru* 85616 points

    Hello,

    I am sorry about the confusion of the data sheet.  We have found most designers have an easier time designing with a fixed delay approach.

    This can be accomplished by connecting ADEL and ADELEF to either ground or a known voltage with a resistor divider off of VREF.

    The following link will bring you to an application note that goes through the step by step design approach using the UCC28950 in a fix delay approach.

    There is a hyperlink to an excel design tool that goes along with the application note that can be found inside the application note.

    https://www.ti.com/lit/pdf/slua560

    After reading the application note if you have any questions please feel free to repost in the e2e and we will address the questions for you.

    Regards,