步进电机驱动芯片IRMCK203

International Rectifier • 233 Kansas Street, El Segundo, CA 90245 USA!

IRMCK203Application Developer’s Guide

February 19, 2004Version 1.0

IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 Data and specifications subject to change without notice. 3/18/2004 IRMCK203 Application Developer’s Guide This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 2

Table of Contents 1 Introduction...............................................................................................................................................................5 1.1 Constraints.........................................................................................................................................................5 1.2 Application Connections...................................................................................................................................5 2 Concepts....................................................................................................................................................................7 2.1 Regulators.........................................................................................................................................................7 2.1.1 Closed Loop Current Control....................................................................................................................7 2.1.2 Closed Loop Velocity Control..................................................................................................................7 2.1.3 Rotor Angle Estimation.............................................................................................................................8 2.1.4 Start-Stop Sequencer and Fault Detection.................................................................................................8 2.2 Current Feedbacks.............................................................................................................................................8 2.2.1 Using IR2175............................................................................................................................................8 2.2.2 Using Inverter Leg Shunt..........................................................................................................................8 2.3 Communication.................................................................................................................................................8 2.3.1 RS-232 Serial Interface.............................................................................................................................8 2.3.2 SPI Interface..............................................................................................................................................9 2.3.3 Host Parallel Interface...............................................................................................................................9 2.3.4 Synchronization of PWM Cycle to an External Microprocessor............................................................10 2.4 External Interfaces..........................................................................................................................................10 2.4.1 Discrete I/O External Interface................................................................................................................10 2.4.2 Analog I/O Interface................................................................................................................................11 2.5 Sequencing Control.........................................................................................................................................13 2.6 Fault Handling.................................................................................................................................................14 2.6.1 Gatekill Structure and Overcurrent/Overtemperature Fault....................................................................15 2.6.2 DC Bus Faults and DC Bus Braking.......................................................................................................15 2.7 LED Modes.....................................................................................................................................................16 3 Motor Start-up Supporting Tools............................................................................................................................17 3.1 Start-up Flow...................................................................................................................................................17 3.1.1 Drive Parameter Setup............................................................................................................................17 3.1.2 Evaluating Drive Performance................................................................................................................24 3.1.3 Diagnostic Mode Functions....................................................................................................................25 3.1.4 Miscellaneous Functions.........................................................................................................................28 3.2 Standalone Operation and Register Initialization via Serial EEPROM..........................................................31 3.2.1 Register Initialization via EEPROM.......................................................................................................31 3.2.2 Starting and Stopping the Motor.............................................................................................................32 3.2.3 Fault Processing......................................................................................................................................32 4 Reference................................................................................................................................................................33 4.1 Register Access...............................................................................................................................................33 4.1.1 Host Parallel Access................................................................................................................................33 4.1.2 SPI Register Access................................................................................................................................33 4.1.3 RS-232 Register Access..........................................................................................................................33 4.2 Write Register Definitions..............................................................................................................................38 4.2.1 PwmConfig Register Group (Write Registers)........................................................................................38 4.2.2 CurrentFeedbackConfig Register Group (Write Registers)....................................................................39 4.2.3 SystemControl Register Group (Write Registers)...................................................................................40 4.2.4 TorqueLoopConfig Register Group (Write Registers)............................................................................40 4.2.5 VelocityControl Register Group (Write Registers).................................................................................41 4.2.6 FaultControl Register Group (Write Registers)......................................................................................42 4.2.7 SystemConfig Register Group (Write Registers)....................................................................................43 4.2.8 EepromControl Registers (Write Registers)............................................................................................44 4.2.9 ClosedLoopAngleEstimator Registers (Write Registers)........................................................................45 4.2.10 OpenLoopAngleEstimator Registers (Write Registers)..........................................................................46