Buck Regulator跟Buck Switching Regulator, Buck Converter, Buck IC, Step Down Switching Regulator 中文 都叫切换式降压IC或切换式降压稳压器。

**Buck Regulator 从效率上架构分为两种：

1. Standard Buck Regulator.(标准切换式降压IC) 效率约 75%~85%

2. Synchronous Buck Regulator(同步式切换式降压IC)效率约 88%~97%