Question six

In the buck converter, V_IN=12 V, V_OUT=1.2 V, I_OUT=25 A. How much is the power loss reduced if the loop inductance is reduced from 1.5 nH to 0.5 nH? f_sw =1 MHz, L = 0.33 μH (Hint: To calculate the peak current, it might be helpful to remember that V = Ldi/dt.)

A. 0.63 W
B. 0.71 W
C. 0.03 W
D. 0.35 W
E. 0.80 W