30V, 7.5mOhm N-channel — the conduction-loss floor
The Infineon IPD075N03LGATMA1 is an OptiMOS™ N-channel MOSFET rated for 30V drain-source and 50A continuous drain at a 25°C case temperature. The 7.5mOhm maximum on-resistance at 30A and 10V gate drive sets the conduction-loss floor for a 12V or 24V bus — at 30A the dissipation is under 7W, leaving headroom in the 47W package limit.
Gate charge and switching speed
Total gate charge is 18 nC at 10V gate drive. For a 100 kHz switching frequency, that translates to 1.8 mA average gate current from the driver — well within the capability of a standard gate-driver IC. The 1900 pF input capacitance at 15V drain-source confirms the switching losses stay manageable in hard-switched topologies.
Thermal range and package reality
The PG-TO252-3-11 (DPak) package with an exposed tab requires a copper area on the PCB for heat spreading; the 47W dissipation limit assumes the tab is soldered to a suitable thermal pad.
ROHS3 compliant.
