Fully integrated microstepping motor driver with motion engine and SPI

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.

Key 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

Circuit Diagram

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circuit_diagram_16737_thumbnail.png

Design

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 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
STM32F1xx motor-control firmware for dSPIN - quick guide 2.3 193 KB
STSPIN L6470 and L6472 product presentation 1.0 1 MB
STSPIN logic core basics 1.0 1 MB
STSPIN motor drivers - Voltage mode stepper motor control 1.0 835 KB
dSPIN Future in motion - L6470 presentation 3.1 2 MB

Technical Documentation

Product Specifications
Description Version Size
DS6582 DS6582: Fully integrated microstepping motor driver with motion engine and SPI 7.0 1 MB
User Manuals
Description Version Size
UM1688 UM1688: EVAL6470H, EVAL6470PD, EVAL6472H and EVAL6472PD: fully integrated microstepping motor drivers 2.0 5 MB
UM1691 UM1691: EVAL6470H-DISC: fully integrated stepper motor driver based on the L6470 and STM32™ 2.0 1 MB
UM2022 UM2022: SPINFamily evaluation tool 2.0 2 MB
Design Notes & Tips
Description Version Size
DT0065 DT0065: A Guide to understanding L6470, L6480, and powerSTEP01 output voltage levels 1.0 174 KB
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
Motor Control IC 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
L6470HTR Active 1000 2.671 HTSSOP28 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6470PDTR Active 1000 3.093 PowerSO 36 Tape And Reel -40 150 NEC EAR99 ITALY MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6470PD Active 1000 3.093 PowerSO 36 Tube -40 150 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
L6470H Active 1000 2.671 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**
L6470HTR ActiveHTSSOP28IndustrialEcopack2 0 0
L6470PDTR ActivePowerSO 36IndustrialEcopack1 (*) 0 0
L6470PD ActivePowerSO 36IndustrialEcopack1 (*) 0 0
L6470H 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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