A Novel Control Scheme for Light Load Power Reduction of Flyback Converter

Lower power consumption is a primary concern in the design and development of the flyback converter. However, the power consumption of the flyback converter during light loads has not been extensively explored in existing literature. Given the rapid deployment of flyback converters, it is necessary to develop a new technique of reducing power consumption for the flyback converter under light load conditions. This letter introduces a novel power loss reduction approach for flyback converter with average power reduction strategy. A controller IC is fabricated with TSMC 0.5-μm bipolar-CMOS-DMOS (BCD) mixed-signal process. And verified by a prototype experimental test board of 15 W/15 V.