Patent ID: 7157886
Filing Date: 2007-01-02
Classification: H02M,Y02B

Abstract:
1. Power generator apparatus for converting an alternating current (AC) input to a direct current (DC) output, the apparatus comprising: a clock generator; a power switching device gated by the clock generator and coupled to the alternating current (AC) input to generate regulated DC output power; a memory device storing digitized reference data, wherein said stored digitized reference data is a time sequence representation of a string of duty cycles which the power switching device must operate in accordance with the characteristics of the AC input voltage to pulse-width modulate the duty cycle; and means for comparing the alternating current (AC) input and DC output to effect power circuit function between operating in a first phase at a first frequency and operating in a second phase at a second frequency; said reference data in said memory device being used to continuously pulse-width modulate (PWM) a duty cycle of a gating signal from the clock generator to the power switch during said second phase.