January 2013

Doc ID 024193 Rev 1

1/18

AN4241

Application note

dSPIN™ family: fully integrated stepper motor drivers

By Enrico Poli

Introduction

The L6470 and L6472 are fully integrated motor drivers providing a complete stand-alone

solution for the high-end stepper motor applications. The devices can be controlled by a

host microcontroller through a fast SPI interface and are able to execute a complete set of

motion commands.

This document describes how the devices can be configured and gives some suggestions

about the operation and the application design.

The current control algorithm of the devices (the L6470 voltage mode driving and the L6472

advanced current control) is not investigated in this document.

For further details, please, refer to the respective application notes AN4144 "Voltage mode

control operation and parameter optimization" and AN4158 "Peak current control with

automatic decay adjustment and predictive current control: basics and setup".

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