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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
Development Tools
Embedded Software
Evaluation Tools
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Picture Part number Manufacturer Description EVAL6472H -- Fully integrated stepper motor driver based on the L6472 
EVAL6472H-DISC -- L6472 Discovery: development tool to explore L6472 motor driver 
EVAL6472PD -- Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package 
STEVAL-PCC009V2 -- IBU Motor Control & IPS universal interface Part NumberFully integrated stepper motor driver based on the L6472
L6472 Discovery: development tool to explore L6472 motor driver
Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package
IBU Motor Control & IPS universal interface
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L6472H | Active | HTSSOP28 | Industrial | Ecopack2 | |
| L6472HTR | Active | HTSSOP28 | Industrial | Ecopack2 | |
| L6472PD | Active | PowerSO 36 | Industrial | Ecopack2 (**) | |
| L6472PDTR | Active | PowerSO 36 | Industrial | 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.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | Package | Packing Type | Temperature (°C) | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||
| L6472HTR | 4 distributors | Get sample | Active | HTSSOP28 | Tape And Reel | -40 | 150 | EAR99 | PHILIPPINES | 2.671 / 1k | |
| L6472PD | 7 distributors | Buy now | Active | PowerSO 36 | Tube | -40 | 150 | EAR99 | MALAYSIA | 3.093 / 1k | |
| L6472PDTR | 6 distributors | Get sample | Active | PowerSO 36 | Tape And Reel | -40 | 150 | EAR99 | MALAYSIA | 3.093 / 1k | |
| L6472H | 4 distributors | Buy now | Active | HTSSOP28 | Tube | -40 | 150 | EAR99 | PHILIPPINES | 2.671 / 1k | |
(*) 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
