StrongIRFET™ N-channel for high-current switching
The Infineon IRL40SC209 is an N-channel MOSFET from the StrongIRFET™ series, built for low-voltage, high-current power switching. The 267 nC gate charge at 4.5 V sets the drive requirement — a gate driver capable of sourcing several amps is needed to keep switching losses in check at higher frequencies.
Thermal and package reality for the layout
The 375 W power dissipation rating is only achievable with the tab soldered to a substantial thermal pad and adequate board-level cooling.