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TPS55340: TPS55340 Heating Problem

Part Number: TPS55340

Hi, I'm using TPS55340 for boost converter 18V-23V to 24 V and 3A. But it's heating while drawing 1.5A. Why? Datasheet says it can handle 5A but even 1.5A it is getting hot not only TPS55340, also diode and inductor. I build nearly same circuit on webench which is below. There are only 2 difference between my design and webench. Diode 5A 60V(Webench says 10A 200V) and RCOMP 3.3K(Webench says 3.24k).

And also my PCB is 2 layer, One layer for components and other layet full ground.