A power supply is being designed to power a communications application from a 100 v dc bus. The equipment requires a neg

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A Power Supply Is Being Designed To Power A Communications Application From A 100 V Dc Bus The Equipment Requires A Neg 1 (80.99 KiB) Viewed 25 times

A power supply is being designed to power a communications application from a 100 v dc bus. The equipment requires a negative de voltage rail at - 20 V dc. (a) A Ĉuk converter, which is shown in Figure Q5, and a buck-boost converter topologies were considered by the designer. Discuss the advantages and disadvantages of each topology for this application. [9 marks] rail. (b) The equipment will draw between 40W and 50 W from the -20 Determine the minimum inductor sizes for the converter to stay in continuous conduction mode if the converter switching frequency is 100 kHz. [10 marks] (c) Discuss briefly why in practice the inductors calculated in Q5(b) would be significantly larger than the minimum values. [6 marks] [Total 25 marks] VCI RI L R2 mwin hamwe C vci Ro Figure Q5(a): Čuk switch-mode power supply