NCV70521MN003R2G屬于集成電路（IC）的電機驅(qū)動器控制器。由安森美半導(dǎo)體公司制造生產(chǎn)的NCV70521MN003R2G電機驅(qū)動器，控制器產(chǎn)品屬于電機驅(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或相關(guān)機電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預(yù)期負載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。

Introduction

The AMIS?30521/NCV70521 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?30521/NCV70521 contains a current?translation table. It 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 and control loops based on load?angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control.

特性 Features

? Dual H?Bridge for 2 Phase Stepper Motors

? Programmable Peak?Current Up to 1.2 A Continuous (1.5 A Short Time), Using a 5?Bit Current DAC

? On?Chip Current Translator

? SPI Interface

? Speed and Load?Angle Output

? 7 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 Flyback Diodes

? Full Output Protection and Diagnosis

? Thermal Warning and Shutdown

? Digital IO’s Compatible with 5 V and 3.3 V Microcontrollers

? NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes

? These are Pb?Free Devices*