IRMCF312 Datasheet, PDF (1/8 Pages) International Rectifier – Dual Channel Sensorless PM Motor Control IC MCETM(Motion Control Engine) based sinusoidal sensorless control

Outline Data Sheet No. 03-10-06
Advanced Information
IRMCF312
Dual Channel Sensorless PM Motor Control IC
MCE^TM(Motion Control Engine) based sinusoidal sensorless control
Features
Product Summary
„ MCE^TM based hardware computation for complex _{Maximum clock input (crystal)}
motor control algorithm
„ Enable two sensorless PM motor control and digital Internal max clock frequency (SYSCLK)
PFC control
„ Increase energy efficiency to exceed energy
Sensorless control computation time
guideline
„ Supports both interior and surface permanent
magnet motors
MCE^TM computation data range
Program RAM
„ Built-in hardware peripheral of single shunt current _RAM
feedback reconstruction for compressor and fan
motor. No external OP amp required
GateKill latency (digital filtered)
„ 2 channel loss minimization Space Vector PWM
„ 3 channel analog output (PWM)
PWM carrier frequency data range
„ Embedded 8-bit high speed microcontroller (8051) ^{A/D input channels}
for flexible I/O and man-machine control
„ JTAG programming port for emulation/debugger
„ 2 channel serial communication interface (UART)
„ I²C serial interface
„ Analog watchdog timer, 4 Timer/counter
„ _{External EEPROM and internal RAM facilitates}
A/D converter resolution
A/D converter conversion speed
8051 instruction execution speed
Analog output (PWM) resolution
debugging and code development
„ _{Pin compatible with mask ROM version}
„ _{3.3V/1.8V CMOS}
UART baud rate (typ)
Package
60 MHz
120 MHz
11 μsec typ
16 bit signed
48K byte
8K byte
2 μsec
16 bit
11
12 bit
2 μsec
2 SYSCLK
8 bit
57.6 kbps
QFP100
Description
IRMCF312 is a high performance RAM based motion control IC designed primarily for appliance applications. IRMCF312 is
designed to achieve low cost and high performance control solutions for advanced inverterized appliance motor control.
IRMCF312 contains two computation engines. One is Motion Control Engine (MCE^TM) for sensorless control of permanent
magnet motors; the other is an 8-bit high speed microcontroller (8051). Both computation engines are integrated into one
monolithic chip. The MCE^TM contains a collection of control elements such as Proportional plus Integral, Vector rotator, Angle
estimator, Multiply/Divide, Low loss SVPWM, SingleShuntIFB, etc., which are implemented in hardware. The user can
program a motion control algorithm by connecting these control elements using a graphic compiler. Key components of the
sensorless control algorithms, such as the Angle Estimator, are provided as complete pre-defined control blocks. A unique
analog/digital circuit and algorithm to fully support single shunt current reconstruction is also provided. The 8051
microcontroller performs 2-cycle instruction execution (60MIPS at 120MHz). The MCE and 8051 microcontroller are connected
via dual port RAM to process signal monitoring and command input. An advanced graphic compiler for the MCE^TM is
seamlessly integrated into the MATLAB/Simulink environment, while third party JTAG based emulator tools are supported for
8051 development. IRMCF312 comes with a small QFP100 pin package.
Preliminary Information