Tzu-Hsien Yang, Chun-Kai Chiu, Yong-Hwa Wen, Ke-Horng Chen, Ying-Hsi Lin, Shian-Ru Lin, Tsung-Yen Tsai: A Pre-Charge Tracking Technique in the 40MHz High-switching 48-to-5V DC-DC Buck Converter with GaN Switches for Reducing Large Self-commutation Loss and Achieving a High Efficiency of 95.4%. ESSCIRC 2021: 311-314