ZHCSH69 December 2017 TPS40345
PRODUCTION DATA.
Synchronous buck power inductors are typically sized for approximately 30% peak-to-peak ripple current (IRIPPLE).
Given this target ripple current, the required inductor size can be calculated in Equation 3.
Selecting a standard 300-nH inductor value, solve for IRIPPLE = 6 A
The RMS current through the inductor is approximated by Equation 4.