TC4420Non-inverting MOSFET gate driver

TC4420 is a non-inverting gate driver that converts a logic signal into short, high-current pulses for charging and discharging a MOSFET gate. It is a driver stage, not a MOSFET power switch or an oscillator. The commercial DIP8 and SOIC8 versions share the same physical pin functions. Both VDD pins, both ground pins and both output pins must be connected. The duplicated contacts carry fast transient currents and are not optional alternatives. Local bypassing and a short driver-to-gate loop are essential to avoid ringing and supply disturbance. The example uses a 12 V driver supply, a 0–5 V PWM input and a 10 Ω gate resistor feeding a grounded-source N-channel MOSFET. A 100 kΩ gate-to-source resistor defines the off state. The 6 A figure is a peak rating under stated conditions; it is not a continuous load-current rating.