600 V, 90 A — the power-stage workhorse
The Infineon IGP50N60T is a TRENCHSTOP™ Trench Field Stop IGBT rated for 600 V collector-emitter breakdown and 90 A continuous collector current, with a pulsed current capability of 150 A.
Conduction and switching losses — the thermal budget drivers
At a test condition of 400 V, 50 A, 7 Ω gate resistor, and 15 V gate drive, the typical Vce(on) is 2 V — this defines the conduction loss floor at full load. Switching energy is 1.2 mJ (turn-on) and 1.4 mJ (turn-off), which together with the 333 W maximum power dissipation sets the heatsink requirement for the target switching frequency. Turn-on delay is 26 ns and turn-off delay is 299 ns at 25°C, giving a usable switching window for PFC, welding inverters, and motor-drive stages up to the 30–40 kHz range before dead-time margins shrink.
