Other Parts Discussed in Thread: TPS54561
TPS54561-Q1, input 22.4V, output 5.1V. Load is minimal <10mA. Design load is 4A. High side switch has very significant ringing, which is causing ~3Vpp noise on the input rail, and ~800mV oscillation on the outputs. In picture 2, you can see the overshoot is about 5 volts (peak vs high). The layout and schematic are shown below. I think I need to fix the layout, but I'm not sure what I could do to make the loop area smaller. The recommended layout is shown last. I know I have deviated slightly, but my inductor is also much larger than shown in the layout example. Is the problem that I put some of the components on the bottom side?
Happy to hear suggestions, thank you.