APPLICATION INFORMATION INDUCTOR SELECTION In normal operation, the inductor maintains continuous current to the output. The inductor current has a ripple that is dependent on the inductance value. The high inductance reduces the ripple current. In general, select the inductance by the following equation: () ×− = ⋅⋅+ OUT IN OUT IN VVV L VfI
Where is the output voltage, is the input voltage, f is the switch frequency, and + is the peak-to-peak inductor ripple current. Typically, choose + as the 30% of the maximum output current. OUT V IN V I I
