IRMCK341 Datasheet, PDF (1/36 Pages) International Rectifier – Sensorless Motor Control IC for Appliances

Data Sheet No. PD60339
IRMCK341
Sensorless Motor Control IC for Appliances
Features
„ MCE^TM (Motion Control Engine) - Hardware based
computation engine for high efficiency sinusoidal
sensorless control of permanent magnet AC motor
„ Supports both interior and surface permanent
magnet motors
„ Built-in hardware peripheral for single shunt
current feedback reconstruction
„ No external current or voltage sensing operational
amplifier required
„ Three/two-phase Space Vector PWM
„ Three-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
„ Watchdog timer with independent analog clock
„ Three general purpose timers/counters
„ Two special timers: periodic timer, capture timer
„ _{Internal ‘One-Time Programmable’ (OTP) memory}
and internal RAM for final production usage
„ _{Pin compatible with IRMCF341, RAM version}
„ _{1.8V/3.3V CMOS}
Product Summary
Maximum crystal frequency
60 MHz
Maximum internal clock (SYSCLK) frequency 128 MHz
Maximum 8051 clock frequency
33 MHz
Sensorless control computation time
MCE^TM computation data range
11 μsec typ
16 bit signed
8051 OTP Program memory
56K bytes
MCE program and Data RAM
8K bytes
GateKill latency (digital filtered)
2 μsec
PWM carrier frequency counter
16 bits/ SYSCLK
A/D input channels
8
A/D converter resolution
12 bits
A/D converter conversion speed
2 μsec
8051 instruction execution speed
2 SYSCLK
Analog output (PWM) resolution
8 bits
UART baud rate (typ)
57.6K bps
Number of I/O (max)
24
Package (lead-free)
QFP64
Operating temperature
-40°C ~ 85°C
Description
IRMCK341 is a high performance OTP based motion control IC designed primarily for appliance applications. IRMCK341 is
designed to achieve low cost and high performance control solutions for advanced inverterized appliance motor control.
IRMCK341 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, Single Shunt IFB. 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 implemented in hardware. 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 (16MIPS at 33MHz). 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 developments.
IRMCK341 comes with a small QFP64 pin lead-free package.
Rev 1.0