本文介绍了利用大规模专用集成电路SA4828设计变频器的方法。内容包括：SA4828的特性介绍及变频器的主电路、驱动电路、隔离电源、保护电路、速度检测、调速系统等部件的设计方法。-This article describes the use of large scale integrated circuit design of the inverter method SA4828. Include: SA4828 features introduced and the inverter main circuit, driver circuit, isolated power supply, protection circuits, speed detection, speed control system and other parts of the design.