On Semi AMIS-30542微步进马达驱动方案.docx

On Semi AMIS-30542 微步进马达驱动方案 On Semi 公司的 AMIS-30542 是微步进的步进马达驱动器,通过 I/O 引脚和 SPI 接口与外接 MC U连接. AMIS-3054 2集成了片上电压稳压器,重置输出和看门狗重置,具有两个用于两相步进马达的 H桥,可编程峰值电流高达 , 和 5V 与 MCU AMIS-3054 2 主要特性,方框图以及应用电路和外接元件列表. The AMIS ? 30542 isa micro ? stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. It has an on ? chip voltage regulator, reset ? output and watchdog reset, able to supply peripheral devices. AMIS ? 30542 contains a current ? translation table and takes the next micro ? step depending on the clock signal on the “ NXT ” input pin and the status of the “ DIR ”(=direction) register or input pin. The chip provides aso ? called “ speed and load angle ” output. This allows the creation of stall detection algorithms and control loops based on load ? angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The AMIS ? 30542 is implemented in I2T100 technology, enabling both high ? voltage analog circuitry and digital functionality on the same chip. The chip is patible with the automotive voltage requirements. The AMIS ? 30542 is ideally suited for general ? purpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the on ? chip voltage regulator it further reduces the BOM for mechatron