L6474中文资料高达16微步的步进电机驱动器，具有SPI和高级电流控制数据手册ST规格书

描述 Description

The L6474 device, realized in analog mixed signal technology, integrates a dual low RDS(on)DMOS full bridge with all power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protections. Thanks to a new current control, a 1/16 microstepping is achieved through an adaptive decay mode which outperforms traditional implementations.

All data registers, including those used to set analogue values (i.e.: current control value, current protection trip point, deadtime, etc.) are sent through a standard 5 Mbit/s SPI.

A very rich set of protections (thermal, low bus voltage, overcurrent) makes the L6474 device “bullet proof” as required by the most demanding motor control applications.

特性 Features

• Operating voltage: 8 - 45 V
• 7.0 A output peak current (3.0 Ar.m.s.)
• Low RDS(on)power MOSFETs
• Programmable power MOS slew rate
• Up to 1/16 microstepping
• Current control with adaptive decay
• Non-dissipative current sensing
• SPI interface
• Low quiescent and standby currents
• Programmable non-dissipative overcurrent protection on all power MOS
• Two-level overtemperature protection

简介

L6474属于集成电路（IC）的电机驱动器控制器。由制造生产的L6474电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。