Datasheet > L6474H

L6474H

更新时间： 2024-09-23 11:58:03

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动器电机
页数	文件大小	规格书
51页	741K
描述
easySPIN â fully integrated microstepping motor driver

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中文翻译

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数据手册

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L6474H 数据手册

L6474

easySPIN – fully integrated microstepping motor driver

Features

■ Operating voltage: 8 - 45 V

■ 7.0 A output peak current (3.0 A r.m.s.)

■ Low R_DSonpower MOSFETS

■ Programmable power MOS slew-rate

■ Up to 1/16 microstepping

HTSSOP28

POWERSO36

■ Current control with adaptive decay

■ Non dissipative current sensing

■ SPI interface

an adaptive decay mode which outperforms

traditional implementations.

■ Low quiescent and standby currents

All data registers, including those used to set

analogue values (i.e. current control value,

current protection trip point, dead time, etc.) are

sent through a standard 5 Mbit/s SPI.

■ Programmable non dissipative overcurrent

protection on all power MOS

■ Two-level overtemperature protection

A very rich set of protections (thermal, low bus

voltage, overcurrent) makes the L6474 “bullet

proof” as required by the most demanding motor

control applications.

Application

■ Bipolar stepper motor

Description

The L6474, realized in analog mixed signal

technology, integrates a dual low R_DSonDMOS

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

Table 1.

Device summary

Order codes

Package

Packing

L6474H

L6474HTR

L6474PD

HTSSOP28

Tube

Tape and reel

Tube

POWERSO36

L6474PDTR

Tape and reel

December 2011

Doc ID 022529 Rev 2

1/51

www.st.com

12 3 4 5 6 7...51

中文翻译

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