In a Buck-Boost converter, L=25 mu mathrm{H}L=25H. It is operating in dc steady state under the following
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Question:
In a Buck-Boost converter, L=25 mu mathrm{H}L=25μH. It is operating in dc steady state under the following conditions: V_{i n}=12 mathrm{~V}, DVin=12 V,D =0.6, P_{o}=36 mathrm{~W}=0.6,Po=36 W, and f_{s}=400 mathrm{kHz}fs=400kHz. Assume ideal components.
In this Buck-Boost converter, the output load is changing. Calculate the critical value of the output load P_{o}Po below which the converter will enter the discontinuous conduction mode of operation.
(a) Calculate I_{text {L.crit }}IL.crit and I_{o, text { crit }}Io, crit
(b) Calculate P_{o, text { crit }}Po, crit
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