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PDF IRMCK371 Data sheet ( Hoja de datos )
| Número de pieza | IRMCK371 | |
| Descripción | Sensorless Motor Control IC | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Data Sheet No. PD60336
IRMCK371
Sensorless Motor Control IC for Appliances
Features
MCETM (Motion Control Engine) - Hardware based
computation engine for high efficiency sinusoidal
sensorless control of permanent magnet AC motor
Support Induction motor sensorless FOC control
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
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 IRMCF371, 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
MCETM computation data range
11 μsec typ
16 bit signed
8051 OTP Program memory
64K 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
4
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)
13
Package (lead-free)
QFP48
Operating temperature
85°C
-40°C ~
Description
IRMCK371 is a high performance OTP based motion control IC designed primarily for appliance applications. IRMCK371 is
designed to achieve low cost and high performance control solutions for advanced inverterized appliance motor control.
IRMCK371 contains two computation engines. One is Motion Control Engine (MCETM) 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 MCETM 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 MCETM is seamlessly integrated into the
MATLAB/Simulink environment, while third party JTAG based emulator tools are supported for 8051 developments.
IRMCK371 comes with a small QFP48 pin lead-free package..
Rev 1.0
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1 page  
IRMCK371
1 Overview
IRMCK371 is a new 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 IRMCK371 provides a built-in closed loop sensorless
control algorithm using the unique Motion Control Engine (MCETM) for permanent magnet motors.
The MCETM consists of a collection of control elements, motion peripherals, a dedicated motion
control sequencer and dual port RAM to map internal signal nodes. IRMCK371 also employs a
unique single shunt current reconstruction 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/SimulinkTM 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 IRMCK371.
IRMCF371 is intended for development purpose and contains 48K bytes of RAM, which can be
loaded from external EEPROM for 8051 program execution. For high volume production,
IRMCK371 contains OTP ROM in place of program RAM to reduce the cost. Both IRMCK371 and
IRMCK371 come in the same 48-pin QFP package with identical pin configuration to facilitate PC
board layout and transition to mass production
Figure 1. Typical Application Block Diagram Using IRMCK371
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© 2007 International Rectifier
5
5 Page 
IRMCK371
4.3 Analog Interface Group
AVDD
AVSS
AREF
CMEXT
IFB+
IFB-
IFBO
AIN0
AIN1
AIN2
Analog power (1.8V)
Analog power return
0.6V buffered output
Unbuffered 0.6V, input to the AREF buffer, capacitor needs to be
connected.
Input, Operational amplifier positive input for shunt resistor current
sensing
Input, Operational amplifier negative input for shunt resistor current
sensing
Output, Operational amplifier output for shunt resistor current sensing
Input, Analog input channel 0 (0 – 1.2V), typically configured for DC bus
voltage input
Input, Analog input channel 1 (0 – 1.2V), needs to be pulled down to
AVSS if unused
Input, Analog input channel 2 (0 – 1.2V), needs to be pulled down to
AVSS if unused
4.4 Power Interface Group
VDD1
VDD2
VSS
PLLVDD
PLLVSS
Digital power for I/O (3.3V)
Digital power for core logic (1.8V)
Digital common
PLL power (1.8V)
PLL ground return
4.5 Test Interface Group
TSTMOD
P5.1/TSM
P5.2/TDO
P5.3/TDI
TCK
Must be tied to VSS, used only for factory testing.
Input/output port 5.1, configured as JTAG port by default
Input/output port 5.2, configured as JTAG port by default
Input/output port 5.3, configured as JTAG port by default
Input, JTAG test clock
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© 2007 International Rectifier
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| PDF Descargar | [ Datasheet IRMCK371.PDF ] | |
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