May 20, 2003 Rev 3.0

IRMCS203

Sensorless Drive Design Platform

Features

Low cost complete sensorless drive design

platform

Works with any types of PM motor

No voltage feedback required

Sinusoidal commutation

Low cost FPGA (Spartan2E-300) based closed

loop current and velocity control

Simple design with IR2175 current sensing HVIC

230V/1.0kW maximum output power with

600V/20A advanced Plug-N-Drive

Configurable architecture for motor/drive

parameters

Scalable output power rating (500W/1kW)

Low cost A/D (ADS7818) interface with

multiplexer

ServoDesigner

RS232C/RS422 host interface

4-channel D/A for diagnostics and monitor

function

Parallel interface for microcontroller expansion

or debug port

Over-current and ground fault protection

Over-voltage / Under-voltage protection

Dynamic Braking control with brake IGBT/FWD

Description

IRMCS203 is a complete sensorless drive design platform

for AC permanent magnet motor applications. The drive is

rated up to 1.0kW. The system contains complete

hardware and preloaded object code for the FPGA, and

the ServoDesigner

schematics and B/Ms are provided so that user can adapt

design into specific needs. IRMCO203 downloadable

object code is also available for volume usage of

IRMCS203 design. User can evaluate high performance

servo drive with a specific motor, and tailor the drive

design

Product Summary

Speed operation range (typical)

5 to 100%

High speed operation

100,000rpm (2pole)

Speed accuracy

0.01%

Speed resolution

15bit

PWM carrier frequency

60 kHz max

Sensorless control computation time

10 usec

Continuous output current

3/6 Arms (.5/1kW)

Overload output current

8/16 Arms (.5/1kW)

Maximum modulation index

1.2

Max RS232C speed

57.6 kbps

Optional RS422 communication

1Mbps

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