IRMCK171

5 www.irf.com

© 2014 International Rectifier Submit Datasheet Feedback May 28, 2014

1 Overview

IRMCK171 is a new generation International Rectifier integrated circuit device primarily designed as a

one-chip solution for complete inverter controlled appliance motor control applications. Unlike a traditional

microcontroller or DSP, the IRMCK171 provides a built-in closed loop sensorless control algorithm using

the unique flexible Motion Control Engine (MCE

motors.

The MCE

control sequencer and dual port RAM to map internal signal nodes. IRMCK171 also employs a unique

single shunt current reconstruction circuit in addition to two leg shunt current sensing circuit to eliminate

additional analog/digital circuitry and enables a direct shunt resistor interface to the IC.

Motion control

programming is achieved using a dedicated graphical compiler integrated into the MATLAB/Simulink

TM

development environment. Sequencing, user interface, host communication, and upper layer control

tasks can be implemented in the 8051 high-speed 8-bit microcontroller. The 8051 microcontroller is

equipped with a JTAG port to facilitate emulation and debugging tools. Figure 1 shows a typical

application schematic using the IRMCK171.

IRMCK171 contains 32K bytes of OTP program ROM, The IRMCF171 contains 64K bytes of Flash RAM

and intended for development purposes only while the IRMCK171 is intended for volume production.

Both the development and ROM versions come in a 48-pin QFP package with identical pin configuration

to facilitate PC board layout and transition to mass production.

IRMCK171

Power

Supply

IRS2336D

PM motor

IPM or SPM

Or

IM motor

Passive

EMI

Fillter

Digital I/O

Analog Input

Host

Communication

(RS232C)

Appliance PM

motor Drive

3.3V

Gate signal

15V

EEPROM

6

2

8

Galvanic

isolation

Optional

Figure 1 Typical Application Block Diagram Using IRMCK171