Fully integrated microstepping motor driver with motion engine and SPI

The L6472 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 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, deadtime, etc.) are sent through a standard 5-Mbit/s SPI.

A very rich set of protections (thermal, low bus voltage, overcurrent) makes the L6472 device “bullet proof”, as required by the most demanding motor control applications.

Key Features

  • Operating voltage: 8 - 45 V
  • 7.0 A output peak current (3.0 A r.m.s. )
  • Low RDS(on) 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

Circuit Diagram

circuit_diagram_252765_thumbnail.png

Design

Technical Documentation

Product Specifications
Description Version Size
DS8858 DS8858: Fully integrated microstepping motor driver 5.0 1 MB
Application Notes
Description Version Size
AN4241 AN4241: L6470 and L6472: fully integrated stepper motor drivers 2.0 413 KB
AN4290 AN4290: L647x, L648x and powerSTEP01 family communication protocol 2.1 486 KB
AN4158 AN4158: Peak current control with automatic decay adjustment and predictive current control: basics and setup 2.1 983 KB
User Manuals
Description Version Size
UM1688 UM1688: EVAL6470H, EVAL6470PD, EVAL6472H and EVAL6472PD: fully integrated microstepping motor drivers 2.0 5 MB
UM1692 UM1692: EVAL6472H-DISC: fully integrated stepper motor driver based on the L6472 and STM32™ 2.0 2 MB
UM2022 UM2022: SPINFamily evaluation tool 1.2 1 MB
Design Notes & Tips
Description Version Size
DT0055 DT0055: Maintaining message synchronization with L647x, L648x, and PowerStep01 devices 1.1 163 KB
DT0056 DT0056: Planning for easy troubleshooting with your L647x, L648x, or PowerStep01 design 2.0 172 KB

Presentations & Training Material

Presentations
Description Version Size
An introduction to electric motors 1.0 2 MB
STSPIN L6470 and L6472 product presentation 1.0 1 MB
STSPIN logic core basics 1.0 1 MB
STSPIN motor drivers - Advanced current control 1.0 769 KB

Publications and Collaterals

Flyers
Description Version Size
STSPIN Discovery: Smoothness and precision was never so easy 1.0 1 MB
Selection Guides
Description Version Size
STSPIN motor drivers 05.2016 1 MB
Brochures
Description Version Size
Motor Control Reference Guide 15.10 2 MB
Products and Solutions for Factory Automation and Control 1.0 3 MB

Tools and Software

Development Tools
Embedded Software
Evaluation Tools
Software Development Tools
Motor Control IC Software
Solution Evaluation Tools
Support & Community



Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L6472HTR Active 1000 3.4 HTSSOP28 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6472PD Active 1000 3.8 PowerSO 36 Tube -40 150 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
L6472PDTR Active 1000 3.8 PowerSO 36 Tape And Reel -40 150 NEC EAR99 ITALY MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6472H Active 1000 3.4 HTSSOP28 Tube -40 150 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6472HTR ActiveHTSSOP28IndustrialEcopack2 0 0
L6472PD ActivePowerSO 36IndustrialEcopack1 0 0
L6472PDTR ActivePowerSO 36IndustrialEcopack1 0 0
L6472H ActiveHTSSOP28IndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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