L6470数据手册集成电路（IC）的电机驱动器控制器规格书PDF

描述 Description

The L6470 device, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping. It integrates a dual low RDS(on)DMOS full bridge with all of the power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protection. Thanks to a unique control system, a true 1/128 steps resolution is achieved. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set. All commands and data registers, including those used to set analogue values (i.e. current control value, current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A very rich set of protections (thermal, low bus voltage, overcurrent, motor stall) allows the design of a fully protected application, as required by the most demanding motor control applications.

特性 Features

• Operating voltage: 8 - 45 V
• 7.0 A out peak current (3.0 A r.m.s.)
• Low RDS(on)Power MOSFETs
• Programmable speed profile and positioning
• Programmable power MOS slew rate
• Up to 1/128 microstepping
• Sensorless stall detection
• SPI interface
• Low quiescent and standby currents
• Programmable non-dissipative overcurrent protection on high and low-side
• Two-levels of overtemperature protection

简介

L6470属于集成电路（IC）的电机驱动器控制器。由制造生产的L6470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。