IRMCF171

1

www.irf.com

© 2013 International Rectifier

April 20, 2013

High Performance Sensorless Motor Control IC

Description

IRMCF171 is a high performance flash memory based motion control IC designed primarily for appliance

applications. IRMCF171 is designed to achieve low cost yet high performance control solutions for advanced

inverterized appliance motor control. IRMCF171 contains two computation engines integrated into one monolithic

chip. One is the Flexible Motion Control Engine (MCE

motors; the other is an 8-bit high-speed microcontroller (8051). The user can program a motion control algorithm

by connecting control elements using a graphic compiler. Key components of the complex sensorless control

algorithms, such as the Angle Estimator, are provided as complete pre-defined control blocks. A unique

analog/digital circuit and algorithm fully supports single or leg shunt current reconstruction. The MCE and 8051

microcontroller communicate via dual port RAM for signal monitoring and command input. An advanced graphic

compiler for the MCE

based emulator tools are supported for 8051 software development including a flash programmer. IRMCF171

comes in a 48 pin QFP package.

Features



MCE

TM

(Flexible Motion Control Engine) -

Dedicated computation engine for high efficiency

sinusoidal sensorless motor control



Built-in hardware peripheral for single or two shunt

current feedback reconstruction and analog

circuits



Supports induction machine and both interior and

surface permanent magnet motor sensorless

control



Loss minimization Space Vector PWM



Two-channel analog output (PWM)



Embedded 8-bit high speed microcontroller (8051)

for flexible I/O and man-machine control



JTAG programming port for emulation/debugger



Serial communication interface (UART)



I2C/SPI serial interface



Three general purpose timers/counters



Two special timers: periodic timer, capture timer



Watchdog timer with independent internal clock



Internal 64 Kbyte flash memory



5V tolerant I/O



3.3V single supply

Product Summary

60 MHz

Maximum Internal clock (SYSCLK)

120MHz

Maximum 8051 clock (8051CLK)

30MHz

Sensorless control computation time

35 μsec@100MHz

MCE

16 bit signed

8051 Program Flash

52KB

805/MCE Data RAM

4KB

MCE Program RAM

12KB

GateKill latency (digital filtered)

2 μsec

PWM carrier frequency

20 bits/ SYSCLK

A/D input channels

7

A/D converter resolution

12 bits

A/D converter conversion speed

2 μsec

Analog output (PWM) resolution

8 bits

UART baud rate (typ)

57.6K bps

Number of digital I/O (max)

14

Package (lead free)

QFP48

Typical 3.3V operating current

30mA

Base Part Number

Package Type

Standard Pack

Orderable Part Number

Form

Quantity

IRMCF171

LQFP48

Tape and Reel

2000

IRMCF171TR

IRMCF171

LQFP48

Tray

2500

IRMCF171TY

Release Datasheet Rev. A