A Right-Half-Plane Zero-Free Buck-Boost DC-DC Converter with 97.46% High Efficiency and Low Output Voltage Ripple. - Yen-An Lin; Tzu-Ping Huang; You-Zheng Ou-Yang; Zheng-Ru Wu; Ke-Horng Chen; Ying-Hsi Lin; Ming-Hsien Lin; Hung-Ting Chou (VLSI Circuits, 2019)