Final answer:
The minimum value of inductance required for a buck-boost converter in continuous-conduction mode is calculated using a specific equation; however, sufficient information to perform the calculation is not provided.
Step-by-step explanation:
The minimum value of inductance required in a buck-boost converter operating in continuous-conduction mode, given that Po>2 W, Vd in the range of 8−40 V, Vo=15 V, fs=20kHz and C=470uF, can be calculated using the following equation:
L> (Vo * (Vd - Vo)) / (2 * Po * fs)
However, the specifics of the calculation are not provided within the reference material given, and therefore, an accurate calculation cannot be performed to select the correct option from the available choices a.5mH, b.1.49mH, c.0.3mH, d.2.3mH.