Gate drive and switching — what the numbers mean for the design
Gate charge is 23 nC at 10 V, which keeps gate-drive losses manageable in hard-switched topologies like PFC boost stages or LLC resonant converters. Input capacitance is 1044 pF at 400 V drain bias — a figure that directly influences the switching energy and the required gate-drive source/sink capability. The ±20 V maximum gate-to-source rating provides margin against ringing on the gate node; nominal is not absolute max, so keep the gate drive within the ±20 V limit even during transients.
Automotive qualification and thermal limits
The description flags this as an automotive-grade CoolMOS device, which implies AEC-Q101 qualification and the 150 °C maximum junction temperature needed for engine-bay or transmission-mounted inverters. Power dissipation is rated at 63 W at case temperature — that figure assumes an infinite heatsink; real-world derating follows the thermal resistance from junction to case, which the datasheet provides. The 4.5 V maximum gate threshold at 260 µA drain current is a cold-start consideration: at low temperature the threshold rises, so the gate-drive supply must still guarantee 10 V at the gate even with a cold MOSFET.
Package and mounting — PG-TO263-3
The PG-TO263-3 (D²PAK) is a surface-mount package with a large exposed drain tab for thermal transfer to the PCB copper plane. For the 63 W dissipation capability, the PCB layout must provide a low-thermal-resistance path — typically a multi-layer board with thermal vias under the tab. The part is supplied in Tape & Reel or Cut Tape options, which suits both prototyping and automated assembly lines.