Question

As a power electronics engineer, you have been contracted by a mobile phone manufacturing company, STK Mobile, to design a converter to supply power to the microprocessors for the mobile phones. Your task is to design a converter to meet the following specifications: 1. the microprocessors operate effectively at 8 V and 1 A. 2. continuous current conduction mode at all the time. 3. peak-to-peak inductor current should not be more than 30% of its average value at all operating conditions. 4. output voltage ripple should not be more than 2%. NOTE: Typical output voltage of batteries for the mobile phones range from 3.6 V to 12 V DC, depending on the charge state. You are required to write a short report for your design. The report should cover at least the following, with explanations: (a) block diagram, explaining how the whole system would operate. (b) your choice of converter(s) and its (their) circuits. Explain the operation of your choice of converter(s). (c) derive expressions for the relationships between output and input voltages and currents for your choice of converter (s). Page: 1 of 2 S. Osei Fobi (d) your choice of switching device(s). (e) values of the converter components to meet the above specifications. Assume your system would operate at ideal conditions.

Answer 1

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