IRMCK171 Datasheet, PDF (1/34 Pages) International Rectifier – High Performance Sensorless Motor Control IC

PD-60361
IRMCK171
High Performance Sensorless Motor Control IC
Features
Product Summary
„ 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: analog watchdog timer,
periodic timer, capture timer
„ _{Internal 32Kbyte OTP ROM}
„ _{5V tolerant I/O}
„ 3.3V single supply
Maximum clock input (f_crystal)
Maximum Internal clock (SYSCLK)
Maximum 8051 clock (8051CLK)
Sensorless control computation time (max.)
MCE^TM computation data range
8051 OTP Program ROM (min.)
805/MCE Data RAM
MCE Program RAM
12KB
PWM carrier frequency
A/D input channels
A/D converter resolution
A/D converter conversion speed
Analog output (PWM) resolution
UART baud rate (typ)
Number of I/O (max)
Package
Maximum 3.3V operating current
60mA
60 MHz
128MHz
32MHz
48 μsec
16 bit signed
20KB
2KB
20 bits/ SYSCLK
7
12 bits
2 μsec
8 bits
57.6K bps
10
QFP48
Description
IRMCK171 is a high performance One Time Programmable ROM based motion control IC designed primarily for appliance
applications. IRMCK171 is designed to achieve low cost yet high performance control solutions for advanced inverterized
appliance motor control. IRMCK171 contains two computation engines. One is the Flexible Motion Control Engine (MCE^TM) for
sensorless control of permanent magnet motors or induction 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
implemented in a dedicated computation engine such as Vector rotator, Arc-Tangent, Multiply/Divide, Low loss SVPWM and
Motor current sensing. 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 to fully support single shunt current
reconstruction is also provided. The 8051 microcontroller performs 2-cycle instruction execution (16.5MIPS at 33MHz
8051CLK). The MCE and 8051 microcontroller communicate via dual port RAM for 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 software development including an OTP programmer. IRMCK171 comes in
a 48 pin QFP package.
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