STMicroelectronics Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package EVAL6472PD EVAL6472PD Data Sheet

This is information on a product in full production. 

December 2013

DocID022729 Rev 3

1/70

dSPIN™ fully integrated microstepping motor driver

-

 Operating voltage: 8 - 45 V
 7.0 A output peak current (3.0 A 

r.m.s.

)

 Low R

DS(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

 Bipolar stepper motor

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 R

DS(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.

          

L6472H HTSSOP28

Tube 

L6472HTR HTSSOP28

Tape 

and 

reel 

L6472PD

POWERSO36

Tube

L6472PDTR POWERSO36 Tape 

and 

reel