UNIVERSAL HIGH EFFICIENCY POWER CONVERTER

摘要

A universal power converter (100) for generating a regulated voltage, current or power with large input voltage range (130). The power converter has a voltage boost function configured to boost the rectified input voltage and provide power factor correction. The power converter also includes a voltage chop function to chop the boosted voltage to form an AC voltage. The power converter further includes at least one relay (164, 166) in electrical communication with the AC voltage and a transformer. The primary winding (176) has at least two inputs operative to selectively vary the voltage generated on a secondary winding (180) thereof selected by the relay. Accordingly, the power converter can generate different voltages at the output based upon the position of the relay and the boosted voltage. The power converter provides maximum power operation at a wide output voltage range, maximizing the charge energy.