40 V, 195 A, 1.7 mOhm — the conduction-loss floor for high-current switching
The IRLS3034TRLPBF: At 195 A, the 1.7 mOhm Rds(on) produces conduction loss within the 375 W power dissipation rating at case temperature. The 162 nC gate charge at 4.5 V and 10315 pF input capacitance at 25 V require a gate driver with sufficient peak current for fast switching.
Thermal and gate-drive budget for the D2PAK build
The 375 W power dissipation at case temperature requires the junction to stay below 175°C at full load. The D2PAK tab should be soldered to a large copper plane on a multi-layer board.
