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UCC28C56EVM-066: Duty Cycle limitations of the UCCx8C5x control IC

Part Number: UCC28C56EVM-066


Tool/software:

Hello,

I am recreating the simulation for the UCC28C56EVM-066 in order to use it as a reference for our design path on a house power supply. My Full load and min load cases are slightly different, but well within the limitations of the EVAL board. At 1000V min load, theory says I should be getting roughly 0.5% duty cycle, and thats roughly around what I am getting. My question becomes, is this physically achievable? Or does this enter some sort of blanking/hiccup mode?

Thanks,

Jacob Lettiere