一种新型步进电机驱动器

A New Microstepping Motor Driver IC

A3977是Allegro公司推出的一种新型的步进电机驱动集成电路。本文结合其内部结构讨论其功耗低、电流输出大、有效的电流控制、简便的转换接口等特点。文中还指出了应用中应注意的问题。

A3977 is a new motor driver produced by Allegro Microsystem, Inc. Combining its functional block diagram , the features of A3977 are discussed including low - power dissipation and high - current outputs, efficient current control and a simple - to - use translator and so on. The problems in applications are also put forward.