A DCM boost converter is to be designed to operate under the following conditions: 18 V...

 

Transcribed Image Text:

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 i peak. 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 i peak.

Answer rating: 100% (QA)

To design a DCM Discontinuous Conduction Mode boost converter for the specified conditions we can fo... View the full answer