A 95 Peak Efficiency Modified KY Converter With Improved Flying Capacitor Chargi

Abstract

This article presents a modified KY (M-KY) con- verter, which provides a continuous flying capacitor charging current in discontinuous conduction mode (DCM), when com- pared with the conventional KY converter. This modification extends the load current range, improves the power efficiency, and simplifies the zero current detection (ZCD). To meet IoT application requirements, we implement a double clock timing (DCT) control combined with an adaptive sizing technique, which obtains a high efficien