A Buck converter has the following parameters and is operating in CCM: Vin = 12V, Vout =1.8V, L,=530nH, C,= 970 uF, ESR (Co)=5 mohm, switching frequency = 600KHZ, Io = 12A Calculate : (1) The steady state duty cycle D (2) Draw the average model for the power stage (3) Draw the small signal model for the power stage

Design a buck converter such that the output voltage varies between from 20V to 28V while the input voltage is 40V. The maximum load power is 200Wde. Assume the switching frequency is 15kHz. (a) Design the converter such that it will be in continuous current mode. (b) The capacitor realized output voltage ripple must not be more than 1% at worst case. (c) The inductance realizes CCM at worst case. (d) Select the appropriate switch and other elements

An ideal boost converter is required to have a constant output voltage of 12 V at 24 W load.The input voltage varies from 2.7 to 4.5 V (as in a battery cell). Select a switching frequency of100 kHz. The value of the inductance in the boost converter is 2.2 uH. Determine:(a) The range of duty cycle that the converter will operate with (hint: mode?), and(b) The minimum value of the output capacitance such that the pk-to-pk load voltage rippleis less than 2%.

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