MOSFET Calculator

MOSFET Gate Resistor Calculator

Calculate MOSFET gate resistor current, rise time estimate and MCU pin stress for switching circuits.

MOSFET Gate Resistor Calculator Formula

Igate = Vdrive / Rgate, tr approx 2.2 x Rgate x Cgate

Useful for motor drivers, LED drivers, DC/DC converters, power switches and MCU-controlled loads.

Design note

Always check MOSFET datasheet limits, thermal resistance, gate charge, safe operating area and PCB copper area.

Result will appear here.