SNVS480J January 2007 – July 2020 LM5022
Parasitic inductance can be reduced by keeping the power path components close together. As described in the Layout Guidelines, keep the high slew-rate current loops as tight as possible. Short, thick traces or copper pours (shapes) are best.
The switch node must be just large enough to connect all the components together without excessive heating from the current it carries. The LM5022 (boost converter) operates in two distinct cycles whose high current paths are shown in Figure 29.
The dark grey, inner loops represents the high current paths during the MOSFET on-time. The light grey, outer loop represents the high current path during the off-time.