Hi, I used the formula on datasheet for inductor calculation
My values are Iout=3A, Vout=5V, Vinmin=3.6V, Vinmax=22V, ripple current=40, F=500
and results are 193uH in buck mode and 650uH in boost
Could that be correct?
Hi @NjoyUrTime , thank you for using the MPS Technical Forum.
With your inputs (Iout=3A, Vout=5V, Vinmin=3.6V, Vinmax=22V, Ripple Current=(40%*I_L), Fsw=500kHz) and equations 2 and 3 provided in the MP28167 datasheet, I find Lmin-buck=6.4uH and Lmin-boost=1.7uH.
These values seem more reasonable. They also more closely match the inductors chosen for the evaluation boards with the MP28167.
Thank you, Will Snyder