Data Sheet No. PD60362

IRMCS1071

Sensorless Motor Drive Platform for Appliance

Features

IRMCK171 - iMOTION

system

MCE

sinusoidal sensorless control of Permanent Magnet

motors

Supports both interior and surface permanent

magnet motor sensorless control

Single shunt current feedback reconstruction

No external current or voltage sensing OP amp

circuit required

230V/250W output power with IRAM336-025SB,

iMOTION

Bootstrap diode included in IRAM336-025SB

Loss minimization Space Vector PWM

Two-channel analog output (PWM)

Embedded 8-bit high speed microcontroller (8051)

for flexible I/O and man-machine interface

Isolated JTAG programming port for

emulation/debugger

I

MCE Designer

Flexible drive configuration

RS232 interface

Over-current fault protection

Over-voltage / Under-voltage protection

Zero Vector Braking control

EMI Filter included

Product Summary

Continuous output current

0.6 Arms*

Maximum output current

0.9 Apeak**

Maximum Internal clock

128 MHz

Sensorless control computation time

48 µsec max

MCE program RAM

12K bytes

Data RAM

2K bytes

Program OTP

20K bytes min

A/D input channels

5

A/D converter resolution

12 bits

A/D converter conversion speed

2 µsec

Analog output (D/A) resolution

8 bits

RS232C baud rate (typ.)

57.6K bps

* Upgradeable to higher current with larger heat sink

** Limited by current feedback gain resistor values.

Description

IRMCS1071 is a reference design for IRMCK171, which is a high performance motion control IC designed primarily for

appliance applications. It’s mainly aimed to achieve simple, low cost and high performance solutions for advanced appliance

motor control. The system contains an integrated power module, IRAM336-025SB, which is also a part of iMOTION

TM

chipset. The user can readily evaluate high performance sensorless control with MCEDesigner

development effort usually required in the traditional DSP or microcontroller based system. The complete B/Ms, schematics

and layout are provided so that the user can adapt and tailor the design per application needs.

This document is the property of International Rectifier and may not be copied or distributed without expressed consent.