Given a buck-boost converter (with ideal components): 8 V. Vin 40 V.; Vo = 15
V. (regulated); C = 470 micro Farads; and fs = 20 KHz.
(a) Determine minimum L to ensure CCM operating mode if Po 2 W.;
(b) Determine 4Vo (peak-peak ripple) if Vin = 12 V., Io = 250 mA, L = 150 micro Henries