Buck-Boost Converter Calculator

Design inverting buck-boost converters. Calculate all key parameters for negative output voltage.

Input Voltage (V_in)

Output Voltage |V_out|

Switching Frequency (kHz)

Output Current (A)

Ripple Current (%)

Duty Cycle: D = |V_out| / (V_in + |V_out|)

Inductor: L = V_in × D / (ΔI_L × f_sw)

Switch Current: I_sw = I_out × (1 + D)/(1 – D) + ΔI_L/2