介绍了一种运用新型ASIC 芯片ADMC331 设计和实现的SPWM 交流调速系统,系统主要由基于DSP 的电机调速专用集成电路ADMC331 和功率MOSFET 及其驱动电路构成。实 践证明该系统具有良好的运行性能。 关键词: ASIC DSP 交流调速 Abstract: The design of a novel A.C. SPWM speed control system is introduced. It is composed by ADMC331 DSP motor micro-controller which is a kind of ASIC and power MOSFETs with its control circuits. The good running performance of this application has been verified by the practice. Keywords: ASIC, DSP, A.C.speed control