Download Datasheet
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
Resources
Technical Documentation
| Description | Version | Size | |
|---|---|---|---|
|
DS6582: Fully integrated microstepping motor driver with motion engine and SPI | 7.0 | 1.01 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
AN3991: How to drive multiple stepper motors with the L6470 motor driver | 2.1 | 580.22 KB |
|
|
AN4241: L6470 and L6472: fully integrated stepper motor drivers | 2.0 | 413.44 KB |
|
|
AN4290: L647x, L648x and powerSTEP01 family communication protocol | 2.1 | 486.67 KB |
|
|
AN3980: STM32 firmware library for dSPIN L6470 | 1.1 | 787.02 KB |
|
|
AN4144: Voltage mode control operation and parameter optimization | 4.0 | 1.3 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
UM1688: EVAL6470H, EVAL6470PD, EVAL6472H and EVAL6472PD: fully integrated microstepping motor drivers | 2.0 | 5.94 MB |
|
|
UM1691: EVAL6470H-DISC: fully integrated stepper motor driver based on the L6470 and STM32™ | 2.0 | 1.94 MB |
|
|
UM2022: SPINFamily evaluation tool | 2.0 | 2.17 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
DT0065: A Guide to understanding L6470, L6480, and powerSTEP01 output voltage levels | 1.0 | 174.65 KB |
|
|
DT0124: Implementing Overcurrent and Overload Protection for L6470 Based Systems | 1.0 | 278.14 KB |
|
|
DT0125: L647x slew rate control: reduce power losses and operative junction temperature | 1.0 | 329.64 KB |
|
|
DT0055: Maintaining message synchronization with L647x, L648x, and PowerStep01 devices | 1.1 | 163.38 KB |
|
|
DT0056: Planning for easy troubleshooting with your L647x, L648x, or PowerStep01 design | 2.0 | 172.22 KB |
Presentations & Training Material
| Description | Version | Size | |
|---|---|---|---|
|
|
An introduction to electric motors | 1.0 | 2.23 MB |
|
|
STM32F1xx motor-control firmware for dSPIN - quick guide | 2.3 | 193.33 KB |
|
|
STSPIN L6470 and L6472 product presentation | 1.0 | 1.31 MB |
|
|
STSPIN logic core basics | 1.0 | 1.22 MB |
|
|
STSPIN motor drivers - Voltage mode stepper motor control | 1.0 | 835.23 KB |
|
|
dSPIN Future in motion - L6470 presentation | 3.1 | 2.2 MB |
Publications and Collaterals
| Description | Version | Size | |
|---|---|---|---|
|
|
STSPIN Discovery: Smoothness and precision was never so easy | 1.0 | 1.44 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
STSPIN motor drivers | 11.2017 | 1.6 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
Motor Control Reference Guide | 15.10 | 2.61 MB |
|
|
Products and solutions for Smart industry | 3.0 | 2.99 MB |
| Description | Version | Size | |
|---|---|---|---|
|
|
STSPIN Motor Control: Design Considerations for Brushless Direct Current Motor Control | 1.0 | 5.54 MB |
Quality & Reliability
| Part Number | RoHS Compliance Grade | Material Declaration** |
|---|---|---|
| L6470HTR | Ecopack2 |
|
| L6470PDTR | Ecopack2 (**) |
|
| L6470PD | Ecopack2 (**) |
|
| L6470H | Ecopack2 |
|
(**) 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.