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Tính toán cổng đối kháng mosfet với công cụ trực tuyến miễn phí

MOSFET Gate Resistor Calculator

Calculate the recommended gate resistor, peak gate current, and power dissipation for MOSFET driving.

Parameters

How It Works

The gate resistor limits inrush current when charging/discharging the MOSFET gate capacitance. Typical values range from 10–100 Ω.

Peak gate current: I_peak = V_drive / R_gate

Gate drive power: P = Q_g × V_drive × f_sw

Resistor dissipation: P_R = ½ × I_peak² × R × t_switch × f_sw

Lower resistance > faster switching but higher EMI. Higher resistance > lower ringing but more switching loss.

Tool Information

Category
🔧 Electronics & Arduino
Type
Processed in browser
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