Buck Converter Calculator

Design step-down DC-DC converters. Calculate duty cycle, inductor, capacitor, and ripple parameters.

Input Voltage Vin (V)

Output Voltage Vout (V)

Output Current Iout (A)

Switching Frequency fsw (kHz)

Ripple Current Ratio r

Output Ripple Target ΔVout (mV)

Duty Cycle D--

Inductor L--

Peak Inductor Current--

Ripple Current ΔIL--

Output Capacitor C--

Critical Inductance--