Introduction

The AMIS?30511 is a 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. The AMIS?30511 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 a so?called “speed and load angle” output. This allows the creation of stall detection algorithms, step loss detection, and control loops based on load?angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control.

Key Features

? Dual H?Bridge for 2?phase Stepper Motors

? Programmable Peak?current up to 800 mA Using a 5?bit Current DAC

? On?chip Current Translator

? SPI Interface

? Speed and Load Angle Output

? Seven Step Modes from Full?step up to 32 Micro?steps

? Fully Integrated Current?sense

? PWM Current Control with Automatic Selection of Fast and Slow Decay

? Low EMC PWM with Selectable Voltage Slopes

? Active Fly?back Diodes

? Full Output Protection and Diagnosis

? Thermal Warning and Shutdown

? Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs

? ?40°C to 125°C Temperature Range at 800 mA Peak Current

AMIS30511屬于集成電路（IC） > 電機(jī)驅(qū)動器，控制器。安森美半導(dǎo)體公司制造生產(chǎn)的AMIS30511電機(jī)驅(qū)動器，控制器產(chǎn)品屬于電機(jī)驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實(shí)現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運(yùn)動控制。