440 V, 20 A — the voltage-current ceiling for the switching cell
The STGB10NB37LZT4 is a 440 V, 20 A IGBT from ST's PowerMESH series, housed in a D2PAK (TO-263) surface-mount package. It is designed for medium-voltage switched-mode circuits where a logic-level gate drive (4.5 V) can saturate the output stage without a separate 12 V rail.
Logic-level saturation — 1.8 V at 4.5 V gate drive
Vce(on) is 1.8 V maximum at 4.5 V Vge and 10 A Ic, which means a standard 5 V microcontroller output or a 5 V gate-driver IC can drive this IGBT into hard saturation without a boost stage. The 28 nC total gate charge keeps the drive current requirement modest — roughly 28 mA at 1 MHz switching frequency.
Switching dynamics — dead-time and loss budget
Turn-on delay is 1.3 µs and turn-off delay is 8 µs at 25°C, tested at 328 V, 10 A, 1 kΩ gate resistor, 5 V gate drive. The switching energy is 2.4 mJ on and 5 mJ off under the same conditions. These numbers set the minimum dead-time in a half-bridge leg and the per-cycle loss that drives the heatsink calculation.