L6472 datasheet(1/69 Pages) STMICROELECTRONICS

部件名	L6472

功能描述	dSPIN fully integrated microstepping motor driver

PDF	69 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 69 page

January 2012

Doc ID 022729 Rev 1

1/69

69

L6472

dSPIN fully integrated microstepping motor driver

with motion engine and SPI

Features

■ Operating voltage: 8 - 45 V

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

■ Low RDSon power MOSFETs

■ Programmable speed profile

■ Programmable Power MOSFET slew rate

■ Up to 1/16 microstepping

■ Predictive current control with adaptive decay

■ Non-dissipative current sensing

■ SPI interface

■ Low quiescent and standby currents

■ Programmable non-dissipative overcurrent

protection on all Power MOSFETs

■ Two levels of overtemperature protection

Applications

■ Bipolar stepper motor

Description

The L6472, 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 new current control, a

1/16 microstepping is achieved through an

adaptive decay mode which outperforms

traditional implementations. The digital control

core can generate user defined motion profiles

with acceleration, deceleration, speed or target

position, easily programmed through a dedicated

register set.

All application commands and data registers,

including those used to set analog values (i.e.

current control value, current protection trip point,

dead time, etc.) are sent through a standard 5-

Mbit/s SPI.

A very rich set of protections (thermal, low bus

voltage, overcurrent) makes the L6472 “bullet

proof”, as required by the most demanding motor

control applications.

Table 1.

Device summary

Order codes

Package

Packing

L6472H

HTSSOP28

Tube

L6472HTR

HTSSOP28

Tape and reel

L6472PD

POWERSO36

Tube

L6472PDTR

POWERSO36

Tape and reel

HTSSOP28

POWERSO36

www.st.com

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