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UCC28951: Setting the delay time

Part Number: UCC28951

Hello

I am trying to set the delay time according to the excel tool as shown here. I am using a fixed delay approach like the one shown in the functional schematic.

I need only 70 ns delay. But open doing a spice simulation with these values, the schematic is shown down below

When I look at the waveforms of out A and B, I see a delay of 600ns as shown below. I wanted to ask if there was a mistake in my schematic.

Kind regards