AN4241 dSPIN family fully integrated stepper motor drivers英文版本.pdf

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. January 2013 Doc ID 024193 Rev 1 1/18 Contents AN4241 Contents 1 The L6470 and L6472 communication interface . . . . . . . . . . . . . . . . . . . 3 1.1 Communication protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3