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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Design

Technical Documentation

Product Specifications
Description Version Size
DS6582 DS6582: Fully integrated microstepping motor driver with motion engine and SPI 7.0 1 MB
Application Notes
Description Version Size
AN3991 AN3991: How to drive multiple stepper motors with the L6470 motor driver 2.1 580 KB
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
AN3980 AN3980: STM32 firmware library for dSPIN L6470 1.1 787 KB
AN4144 AN4144: Voltage mode control operation and parameter optimization 3.2 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 1.2 1 MB
Design Notes & Tips
Description Version Size
DT0055 DT0055: Maintaining message synchronization with L647x, L648x, and PowerStep01 devices 1.0 163 KB
DT0056 DT0056: Planning for easy troubleshooting with your L647x, L648x, or PowerStep01 design 1.0 170 KB

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

Publications and Collaterals

Flyers
Description Version Size
STSPIN Discovery: Smoothness and precision was never so easy 1.0 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
Ecosystems
Embedded Software
Evaluation Tools
Software Development Tools
STM32 Open Development Environment
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
L6470HTR Active 1000 3.4 HTSSOP28 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO
L6470PDTR Active 1000 3.8 PowerSO 36 Tape And Reel -40 150 NEC EAR99 ITALY MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6470PD Active 1000 3.8 PowerSO 36 Tube -40 150 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
L6470H 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**
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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