FEEDBACK GAIN ADJUSTMENT TO ENHANCE STABILITY OF SWITCHING CONVERTER WITH VARIABLE OUTPUT VOLTAGE

摘要

This disclosure describes an AC/DC power converter that produces multiple output voltage levels. The AC/DC power converter may include a gain adjustment circuit. The gain adjustment circuit may adjust the gain of a feedback signal of the converter in accordance with the converter's output voltage level. The gain adjustment circuit provides sufficient gain and phase margins to the converter and thus enhances the converter's stability.