March 2015

DocID025240 Rev 2

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AN4355

Application note

L648x devices: high power stepper motor controllers

Enrico Poli

Introduction

The L6480 and L6482 devices are motor controllers providing a flexible solution for the high

power 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

on the operation and application design.

The current control algorithm of the devices - voltage mode driving for the L6480 and the

advanced current control for the L6482 device - will be not investigated in this document.

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” for more details about them.

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