Transcription of DC-DC Power Converters
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DC-DC Power Converters
Article in Wiley Encyclopedia of Electrical and Electronics Engineering DC-DC Power Converters Robert W. Erickson Department of Electrical and Computer Engineering University of Colorado Boulder, CO 80309-0425 DC-DC Power Converters are employed in a variety of applications, including Power supplies for personal computers, office equipment, spacecraft Power systems, laptop computers, and telecommunications equipment, as well as dc motor drives. The input to a DC-DC converter is an unregulated dc voltage Vg. The converter produces a regulated output voltage V, having a magnitude (and possibly polarity) that differs from Vg.
The first converter is the buck converter, which reduces the dc voltage and has conversion ratio M(D) = D. In a similar topology known as the boost converter, the positions of the switch and inductor are interchanged. This converter produces an output voltage V that is greater in magnitude than the input voltage V g
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