ELE 754 Midterm: ELE 754 Fall 2002 Midterm Solution
31 Jan 2019
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Answer all four questions: show details of your derivations/calculations. Consider the buck converter with controller shown in figure 1. Assume that the dc input mh, load resistance voltage loadr controller to keep the output voltage constant. V, and the duty cycle d is adjusted by the. 1. 2) determine the operating mode of the converter (continuous or discontinuous current mode). 1. 4) calculate the peak current in switch di , pk. Indicate on each waveform the maximum and minimum values. 8: the voltage waveform across the dc choke lv , the voltage waveform across the switch swv , the dc choke current li , the switch current di . Page 2 of 11 t t t t. The load resistor (loadr is decreased to 10 . The duty cycle is still adjusted to keep the output voltage constant. 1. 6) determine the operating mode of the converter (continuous or discontinuous current mode).
