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Outline Data Sheet No. 03-10-06
Advanced Information
IRMCF312
MCETM(Motion Control Engine) based sinusoidal sensorless control
Features
MCE based hardware computation for complex motor control algorithm Enable two sensorless PM motor control and digital PFC control Increase energy efficiency to exceed energy guideline Supports both interior and surface permanent magnet motors Built-in hardware peripheral of single shunt current feedback reconstruction for compressor and fan motor. No external OP amp required 2 channel loss minimization Space Vector PWM 3 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 2 channel serial communication interface (UART) I2C serial interface Analog watchdog timer, 4 Timer/counter External EEPROM and internal RAM facilitates debugging and code development Pin compatible with mask ROM version 3.3V/1.8V CMOS
TM
Dual Channel Sensorless PM Motor Control IC
Product Summary
Maximum clock input (crystal) Internal max clock frequency (SYSCLK) Sensorless control computation time MCETM computation data range Program RAM RAM GateKill latency (digital filtered) PWM carrier frequency data range A/D input channels A/D converter resolution A/D converter conversion speed 8051 instruction execution speed Analog output (PWM) resolution UART baud rate (typ) Package
60 MHz 120 MHz 11 sec typ 16 bit signed 48K byte 8K byte 2 sec 16 bit 11 12 bit 2 sec 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 (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, 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 MCETM 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
IRMCF312 1 Overview
IRMCF312 is a new International Rectifier integrated circuit device primarily designed as a one-chip solution for complete inverter controlled appliance dual motor control applications. Unlike a traditional microcontroller or DSP, the IRMCF312 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. IRMCF312 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. The sensorless control is the same for both motors with a single shunt current sensing capability. 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 IRMCF312. IRMCF312 contains 48K bytes of RAM, which can be loaded from external EEPROM and is intended to be used for development purposes. For high volume production, the program RAM is replaced with 48K bytes of Mask ROM. Both development and mask-ROM versions come in a 100-pin QFP package with identical pin configuration to facilitate PC board layout and transition to mass production.
RS232C Serial Comm
Field Communication Service to indoor unit
Galvanic Isolation
Galvanic Isolation
Motor PWM + PFC+GF 7 Fault
Compressor Motor
User Parameter Storage User Program Storage Analog input Analog output Digital I/O 1
2
60-100W Fan Motor
2 6 3 15V 3.3V 1.8V Multple Power supply Fault Temp sense Motor PWM
Temperature feedback Analog actuators Relay, Valves, Switches
Figure 1. Typical Application Block Diagram Using IRMCF312
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IRMCF312 2 IRMCF312 Block Diagram and Main Functions
IRMCF312 block diagram is shown in Figure 2.
3 Monitoring D/A (PWM) Periodic Timer Timer Counnter0 Timer Counnter1 Timer Counnter2 Watchdog Timer RS232C RS232C I2C/SPI 8 8 8 8 PORT 1 PORT 2 PORT 3 PORT 4 Interrupt Control Emulator Debugger 2 Xtal (4MHz) PLL 120MHz
PORT 5
8bit (8051) microcontroller
Motion Control Engine (MCE)
6 Dual Channel Low Loss SVPWM PFC PWM Motion Control Modules
Motion Control Bus To #1 motor IGBT gate drive GATEKILL To #2 motor IGBT gate drive GATEKILL To IGBT gate drive GATEKILL
6
SND
Program RAM 48KB
8bit uP Address/data bus
3 Single Shunt Current Sensing 3 3
AC line volt sensing AIN0 AIN1 #1 motor shunt register #2 motor shunt register
Host Interface
EEPROM
RCV SND
RCV SCL/SO-SI SDA/CS0 I/Os I/Os
8bit CPU Core Local RAM 4KB
Dual Port RAM 1kByte
Digital I/Os
I/Os I/Os
MCE Program RAM 3kByte
A/D MUX S/H & OP amp
AIN2 AIN3 AIN4 AIN5 AIN6
Other analog input
4
JTAG Motion Control Sequencer
Figure 2. IRMCF312 Internal Block Diagram
IRMCF312 contains the following functions for sensorless AC motor control applications: * Motion Control Engine (MCETM) o Proportional plus Integral block o Low pass filter o Differentiator and lag o Ramp o Limit o FOC Control block o Clark transformation o Inverse Clark transformation
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IRMCF312
o Vector rotator o Mutiply-divide (signed and unsigned) o Adder o Subtractor o Comparator o Switch o ATAN (arc tangent) o Function block (any curve fitting, nonlinear function) o 16-bit wide Logic operation (AND/OR/XOR/NOT/NEGATE) o MCETM program memory (3K byte) o Dual port RAM (1K byte) o MCETM control sequencer 8051 microcontroller o 3 x 16 bit timer/counter o One 16-bit periodic timer o 16-bit analog watchdog timer o One 16-bit capture timer o Up to 36 discrete I/Os o Eleven-channel 12-bit A/D Buffered five channels (0 - 1.2V input) Unbuffered six channels (0 - 1.2V input) o JTAG port (4 pins) o Up to three channels of analog output (8-bit PWM) o 2 channel UART o I2C port o 48K byte Program RAM o 8K byte RAM
*
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IRMCF312 3 Pinout
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 XTAL0 XTAL1 P1.0/T2 P1.1/RXD P1.2/TXD P1.3/SYNC/SCK P1.4/CAP P1.5 P1.6 P1.7 P4.3/INT6 P4.7/INT10 VDD2 VSS VDD1 FGATEKILL FPWMWL FPWMWH FPWMVL FPWMVH FPWMUL FPWMUH P2.0/NMI P2.1 P2.2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 P3.0/INT2/CS1 CPWMUH CPWMUL CPWMVH CPWMVL CPWMWH CPWMWL CGATEKILL VDD1 VSS VDD2 P4.1/INT4 P4.5/INT8 IPFCIPFC+ IPFCO VACO VACVAC+ AIN6 AIN5 AIN4 AIN3 AIN2 N/A
(Top View)
Figure 3. IRMCF312 Pin Configuration
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IRMCF312 4 4 Application Connections
Typical application connection is shown in Figure 4. In order to complete a Sensorless drive control, all necessary components are shown in connection to IRMCF312.
System Clock
4.19MHz Crystal
XTAL0 XTAL1 PLLVDD PLLVSS
1.8V
PLL Logic RS232C RS232C I2C/SPI
System clock
To indoor unit Microcontroller (RS232C) To other Host (RS232C) Other Communication (I2C or SPI)
P1.2/TXD P1.1/RXD P3.7/TXD P3.6/RXD SDA/CS0 SCL/SO-SI P1.0/T2 P1.3/SYNC/SCK P1.4/CAP P1.5 P1.6 P1.7 P2.0/NMI P2.1 P2.2
Motion Control Modules Dual Port Memory (1kbyte) & MCE Memory (3kByte)
Low Loss Space Vector PWM Low Loss Space Vector PWM
CPWMUH CPWMUL CPWMVH CPWMVL CPWMWH CPWMWL CGATEKILL FPWMUH FPWMUL FPWMVH FPWMVL FPWMWH FPWMWL FGATEKILL
PORT1
Motion Control Sequencer S/H
PFC PWM
PFCPWM PGATEKILL 0.6V IFBC+ IFBCIFBCO IFBF+ 0.6V FAN motor DC bus shunt resistor 0.6V PFC DC bus shunt resistor Compressor DC bus shunt resistor
Digital I/O Control
P2.3 P2.4 P2.5 P3.0/INT2/CS1 P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P4.0/INT3 P4.1/INT4 P4.2/INT5 P4.3/INT6 P4.4/INT7 P4.5/INT8 P4.6/INT9 P4.7/INT10 P2.6/AOPWM0
PORT2
PORT3
Timers Watchdog Timer
S/H
IFBFIFBFO IPFC+
S/H
IPFCIPFCO
PORT4 Local RAM 4kByte 12bit A/D & MUX
VAC+ VACVACO VDC+ VDCAC line voltage
PWM0 PWM1 PWM2 Test Mode Circuit JTAG Port Interface 5 RESET
System Reset
P2.7/AOPWM1
Analog Output
P3.1/AOPWM2
Program RAM (48kByte)
Other Buffered Analog input
VDCO 6 AIN1 - AIN6 AREF CMEXT
Other analog input (0-1.2V) Optional External Voltage Reference (0.6V)
TSTMOD
Test Mode
TCLK
JTAG Control
P5.3/TDI P5.1/TSM P5.2/TDO RESET VDD1 VDD2 VSS
8051 CPU
AVDD AVSS
1.8V
3.3V 1.8V
Figure 4. Application Connection of IRMCF312
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
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IRMCF312
Package Dimensions
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
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IRMCF312
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 http://www.irf.com Data and specifications subject to change without notice. 9/15/2003
Sales Offices, Agents and Distributors in Major Cities Throughout the World.
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
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