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LM2599: Webench not able to reproduce previous results

Part Number: LM2599
Other Parts Discussed in Thread: LM2596,

Dear community,

To be able to validate component alternatives (because of the component shortages) I'm trying to recreate the simulation shown in the image below.

For some unclear reason, Webench is not able to recreate the simulation with the exact same input parameters.

I'm looking for suggestions how to solve this.

Thanks in advance for you suggestions.

Kind regards, Frank

Previous Webench result:

Current Webench response:

  • Hello

    It looks like there is a bug in the Webench model.

    However, you can use the LM2596 in Webench to design the power stage.

    The LM2596 is the same device without the features of the LM2599.

    You can use your above design or the data sheet to select components for the extra

    features of the LM2599.

    See attached.

    Thanks

    WBDesign532.pdf