A DCM boost converter is to be designed to operate under the following conditions 18 V V 36 V 5 W Pload 100 W V 48 V fs 150 kHz

Question

A DCM boost converter is to be designed to operate under the following conditions 18 V V 36 V 5 W Pload 100 W V 48 V fs 150 kHz You may assume that a feedback loop is in place that changes the transistor duty cycle as necessary to maintain a constant output voltage of 48 Design the converter subject to the following specifications The converter should operate in the discontinuous conduction mode at all times To ensure an adequate design margin the inductance L should be chosen such that K is no greater than 75 of Kerit at all operating points Given the above requirements choose the element values to minimise the peak inductor current The output voltage peak ripple should be less than 1V Specify a The inductor value L b The output capacitor value C c The worst case peak inductor current peak

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