Gate charge and switching — sizing the driver
With a maximum gate charge of 30 nC at 4.5 V, the STL42P6LLF6 is well-suited for moderate-frequency switching up to a few hundred kHz. The gate-drive voltage range (4.5 V to 10 V) allows direct drive from 5 V logic or a dedicated gate-driver IC. The input capacitance of 3780 pF at 25 V drain-source means the driver must supply a brief current spike at each switching edge — a 1 A gate driver will charge the gate in roughly 30 ns.
PowerFlat 5x6 — thermal and layout considerations
The device is rated for 100 W power dissipation at case temperature — in practice, the board's copper area and airflow set the real limit.
