Gate-drive calculator
Translate gate-charge data into driver requirements.
The gate driver must move charge fast enough to meet switching targets without creating excessive ringing, false turn-on, or shoot-through. The useful quantities are charge and current—not an isolated gate capacitance value.
Core relationships
Pgate = Qg · Vdrive · fs · Ngates
tMiller ≈ Qgd / Igate
Rgate,total ≈ (Vdrive − Vplateau) / Igate
The total resistance includes driver output resistance, external gate resistance, internal device resistance, and layout impedance.
What the equations do not decide
Gate power is separate system consumption, not entirely MOSFET die heat. Choose the Qgd switching method for current/transition estimates. The calculator does not determine safe deadtime or allocate internal gate heating. Deadtime must cover propagation mismatch and transition uncertainty while avoiding unnecessary body-diode conduction; verify it separately.