Stepper motor driver with up to 16 microsteps with SPI and advanced current control

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.

Key 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

Design

Publications and Collaterals

Flyers
Description Version Size
STEVAL-3DP001V1 - Plug-n-play solution for 3D printers 10.2016 964 KB
Selection Guides
Description Version Size
STSPIN motor drivers 11.2016 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

Presentations & Training Material

Presentations
Description Version Size
An introduction to electric motors 1.0 2 MB
STEVAL-3DP001V1 - Reference design for FDM 3D printing 1.0 1 MB
STM32 F1 firmware library for easySPIN (L6474) motor driver - quick guide 1.0 382 KB
STSPIN L6474 product presentation 1.0 538 KB

Technical Documentation

Product Specifications
Description Version Size
DS8773 DS8773: Fully integrated microstepping motor driver 4.0 950 KB
User Manuals
Description Version Size
UM1771 UM1771: EVAL6474H-DISC: fully integrated microstepping motor driver based on the L6474 and STM32™ 2.0 1 MB
UM2022 UM2022: SPINFamily evaluation tool 2.0 2 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

Tools and Software

Development Tools
Ecosystems
Embedded Software
Evaluation Tools
Software Development Tools
STM32 Open Development Environment
MCUs Embedded Software
Solution Evaluation Tools

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
L6474H Active 1000 2.221 HTSSOP28 Tube -40 150 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
L6474PDTR Active 1000 2.53 PowerSO 36 Tape And Reel -40 150 NEC EAR99 ITALY MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6474HTR Active 1000 2.221 HTSSOP28 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
L6474PD Active 1000 2.53 PowerSO 36 Tube -40 150 NEC EAR99 ITALY 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**
L6474H ActiveHTSSOP28IndustrialEcopack2 0 0
L6474PDTR ActivePowerSO 36IndustrialEcopack1 0 0
L6474HTR ActiveHTSSOP28IndustrialEcopack2 0 0
L6474PD ActivePowerSO 36IndustrialEcopack1 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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