32.1 A 180MHz 45.3%-Peak-Efficiency Isolated Converter Using Q-Downsize Class-D Power Amplifier with Inherent Shoot-Through Current Blocking and High Tolerance for Efficiency Despite Frequency Misalignments. - Tian Xia; Qiujin Chen; Shujing Wang 012; Rui Paulo Martins; Mo Huang (ISSCC, 2025)