Abstract
A single stage single switch high power factor correction AC/DC converter with universal input is presented in this paper. The high power factor can be achieved based upon the charge pump concept and power factor correction stage operating in the continuous current mode. The switch has no current and voltage stresses over a wide range of load variation so that a low voltage rating device can be used. The presented converter has features of high power factor, high efficiency, and low cost. An 80-watt prototype was implemented to show that it has 85% higher efficiency with no voltage stress from 0.5% to 100% load variation over universal line input.
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