2. During discontinuous current mode, the average inductor current, I in Buck converter becomes zero. If Drepresents duty ratio during switch turn-on while D, represents duty ratio during switch turn-off. a) State a parameter that greatly influences I value and a condition when the boundary between continuous and discontinuous current modes occurs. (2 marks) b) Sketch the waveforms of I, and inductor voltage, V respectively. (4 marks) c) The I is concluded using the following equation during discontinuous current mode. Where V., R and T denote output voltage, load resistance and time period respectively. 1 = umaz(D+D2) ) V R Prove that: 0,- (-0 + 10 +BL/KT) (6 marks) 2. During discontinuous current mode, the average inductor current, I in Buck converter becomes zero. If Drepresents duty ratio during switch turn-on while D, represents duty ratio during switch turn-off. a) State a parameter that greatly influences I value and a condition when the boundary between continuous and discontinuous current modes occurs. (2 marks) b) Sketch the waveforms of I, and inductor voltage, V respectively. (4 marks) c) The I is concluded using the following equation during discontinuous current mode. Where V., R and T denote output voltage, load resistance and time period respectively. 1 = umaz(D+D2) ) V R Prove that: 0,- (-0 + 10 +BL/KT) (6 marks)