Switching & gate-drive loss

Uses extracted Eoss(Vds) and Qg.

Inputs

PartBus voltage Vbus (V)Switched current I_sw (A)Switching frequency fsw (Hz)Turn-on overlap t_on (ns)Turn-off overlap t_off (ns)Gate drive Vgs_drive (V)

Result

P_sw ≈ (½·Vbus·Isw·(t_on+t_off) + Eoss(Vbus)) · fsw

Eoss(400 V)354 nJ

E_overlap_on60 µJ

E_overlap_off80 µJ

Switching loss14 W

Gate drive loss (Pdrv = Qg·Vdrv·fsw)6.96 mW

Total dynamic loss14 W

Overlap times depend on gate driver, R_g, and parasitics — refine when real circuit numbers are known. Eoss is interpolated from the extracted curve.