- 4. A Buck converter has the following parameters and is operating in CCM: L = 100 uH; C = 700uF; r = 0.112; fs 100 kHz

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4 A Buck Converter Has The Following Parameters And Is Operating In Ccm L 100 Uh C 700uf R 0 112 Fs 100 Khz 1 (47.27 KiB) Viewed 52 times

- 4. A Buck converter has the following parameters and is operating in CCM: L = 100 uH; C = 700uF; r = 0.112; fs 100 kHz, Vin = 30V; and P. = 36W. The duty ratio D is adjusted to regulate the output voltage V. = 12V. The Pspice simulation showed that at the crossover frequency fe = 1 kHz, the power stage has |Gps (5) = 24.66 dB and 2Gps($) = -138°. Design the feedback controller for this Buck converter such that the output voltage sensing network in the feedback path has again of kpb = 0.2. The steady state error is required to be zero and the phase margin of the loop transfer function should be 60° at, as high a crossover frequency as possible. = kFB.(s) = 0 + (5) dis) Controller Σ Pulse- Width Modulator Power Stage + Output Filter *B Gc(s) GPWM (8) Gps (5) kFB