On Semi AMIS-30624 I2C微步进马达驱动方案

On Semi公司的AMIS-30624是I2C接口的单片微步进马达驱动器，包括位置控制器和控制/诊断接口。马达控制部分采用微步进技术，无传感器停转检测，峰值电流高达800mA，固定频率PWM电流控制和可选择PWM频率，快慢衰减模式自动选择，12V/24V兼容，主要用在汽车电子，建筑物自动化如HVAC，监测，卫星天线，可再生能源等。本文介绍了AMIS-30624主要特性，方框图，应用电路以及评估板AM306244R1DBGEVB主要特性，电路图和材料清单。
The AMIS-30624 is a single-chip micro-stepping motor driver with a position controller and control/diagnostic interface. It is ready to build intelligent peripheral systems where up to 32 drivers can be connected to one I2C master. This significantly reduces system complexity.
The chip receives positioning instructions through the bus and subsequently drives the stator coils so the two-phase stepper motor moves to the desired position. The on-chip position controller is configurable (OTP or RAM) for different motor types, positioning ranges and parameters for speed, acceleration and deceleration. Micro-stepping allows silent motor operation and increased positioning resolution. The advanced motion qualification mode enables verification of the complete mechanical system in function of the selected motion parameters. The AMIS-30624 can easily be connected to an I2C bus where the I2C master can fetch specific status information like actual position, error flags, etc. from each individual slave node.
An integrated sensorless stall detection stops the motor when running into stall. This enables silent, yet accurate position calibrations during a referencing run and allows semi-closed loop operation when approaching the mechanical end-stops.
The chip is implemented in I2T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip. The AMIS-30624 is fully compatible with the automotive voltage requirements.
AMIS-30624主要特性：
Motor Driver
Micro-stepping technology
Sensorless stall detection
Peak current up t...