IRMCF341

Outline Sheet No. 5-26-06 Advanced Information IRMCF341 High Performance Appliance Motor Control IC Features MCETM(Motion Control Engine) - Hardware based computation engine for high efficiency sinusoidal sensorless control for Permanent Magnet AC motors Built-in hardware peripheral for single shunt current feedback reconstruction Supports both interior and surface permanent magnet motor sensorless control No external current or voltage sensing OP amp circuit required Loss minimization 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 Three general purpose timers/counters Three special timers: watchdog timer, periodic timer, capture timer Three general purpose timers/counters External EEPROM and internal RAM facilitates debugging and code development Pin compatible with OTP ROM version Product Summary Maximum clock input (fcrystal) Maximum internal clock (SYSCLK) Sensorless control computation time MCETM computation data range Program RAM loaded from external EEPROM Data RAM GateKill latency (digital filtered) PWM carrier frequency 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) Number of I/O (max) Package 60 MHz 128 MHz 11 µsec typ 16 bit signed 48K bytes 8K bytes 2 µsec 14 bits/ SYSCLK 8 12 bits 2 µsec 2 SYSCLK 8 bits 57.6K bps 24 QFP64 Description IRMCF341 is a high performance RAM based motion control IC designed primarily for appliance applications. IRMCF341 is designed to achieve low cost and high performance control solutions for advanced inverterized appliance motor control. IRMCF341 contains two computation engines. One is the 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 implemented in hardware such as Proportional plus Integral, Vector rotator, Angle estimator, Multiply/Divide, Low loss SVPWM and Single Shunt IFB. The user can program a motion control algorithm by connecting these 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 (60MIPS at 120MHz). The MCE and 8051 microcontroller are connected via dual port RAM for 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 software developments. IRMCF341 comes in a small QFP64 pin package. This document is the property of International Rectifier and may not be copied or distributed without expressed consent. IRMCF341 1 Overview IRMCF341 is a new International Rectifier integrated circuit device primarily designed as a onechip solution for complete inverter controlled appliance motor control applications. Unlike a traditional microcontroller or DSP, the IRMCF341 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. IRMCF341 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 IRMCF341. IRMCF341 contains 48K bytes of program RAM, which can be loaded from external EEPROM for 8051 program execution. The IRMCF341 is intended for development purposes. For high volume production, the program RAM is replaced with 64K bytes of OTP ROM. Both the development and ROM versions come in a 64-pin QFP package with identical pin configuration to facilitate PC board layout and transition to mass production. Appliance Inverter Passive EMI Filter HVIC Gate Drive & Protection Circuit Multiple Output Power Supply 1.8 V 3.3 V PMSM IRMCF341 7 Analog Input Up to 24 Digital Input/Output I2C Interface to EEPROM UART interface to Front Panel Figure 1. Typical Application Block Diagram Using IRMCF341 This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 2 IRMCF341 2 IRMCF341 Block Diagram and Main Functions IRMCF341 block diagram is shown in Figure 2. 8051 Microcontroller 3 Monitoring D/A (PWM) Timer/ Counter 0,1,2 Capture Timer Watchdog Timer Periodic Timer EEPROM Interface Host Interface 2/4 I C / SPI 2 UART (8) PORT 1 Digital I/Os (8) PORT 2 (5) PORT 3 Interrupt Control Local RAM 2KB* 2 MCE (Motion Control Engine) Low Loss Space Vector PWM 8 bit CPU Core Dual Port RAM 2KB* Motion Control Modules 6 To IGBT Gate Drive GateKill Single Shunt Current Reconstruction 3 Single Shunt AIN0 AIN1 A/D MUX S/H AIN2 AIN3 AIN4 AIN5 AIN6 MCE Code RAM 4KB* * Sizes are configurable Emulator Debugger 4 Motion Control Bus Program RAM 48KB 8-bit uP Address/Data Bus PORT 5 JTAG Motion Control Sequencer 120MHz Crystal (4MHz) 2 PLL Figure 2. IRMCF341 Internal Block Diagram IRMCF341 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 (high pass filter) o Ramp o Limit This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 3 IRMCF341 o Angle estimate (sensorless control) o Inverse Clark transformation o Vector rotator o Bit latch o Peak detect o Transition o Multiply-divide (signed and unsigned) o Divide (signed and unsigned) o Adder o Subtractor o Comparator o Counter o Accumulator o Switch o Shift o ATAN (arc tangent) o Function block (any curve fitting, nonlinear function) o 16 bit wide Logic operations (AND, OR, XOR, NOT, NEGATE) o MCETM program memory and dual port RAM (6K byte) o MCETM control sequencer 8051 microcontroller o Three 16 bit timer/counters o One 16 bit periodic timer o One 16 bit watchdog timer o One 16 bit capture timer o Up to twenty discrete I/Os o Eight-channel 12 bit A/D Buffered (current sensing) one channel (0 – 1.2V input) Unbuffered seven channels (0 – 1.2V input) o JTAG port (4 pins) o Up to three channels of analog output (8 bit PWM) o UART o I2C/SPI port o 48K byte program RAM loaded from external EEPROM o 2K byte data RAM • This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 4 IRMCF341 3 Pinout P3.1/AOPWM2 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 SCL/SO-SI P3.3/INT1 P3.2/INT0 P5.1/TMS P5.2/TDO SDA/CS0 P5.3/TDI PLLVDD PLLVSS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 XTAL0 XTAL1 P1.0/T2 P1.1/RXD P1.2/TXD P1.3/SYNC/SCK P1.4/CAP P1.5 P1.6 P1.7 VDD2 VSS VDD1 P2.0/NMI P2.1 P2.2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P3.0/INT2/CS1 PWMUH PWMUL PWMVH PWMVL PWMWH PWMWL GATEKILL VDD1 VSS VDD2 AIN6 AIN5 AIN4 AIN3 AIN2 IRMCF341 (Top View) P3.5/T1 AREF RESET VDD1 TCLK VSS VSS CMEXT P2.3 P2.4 P2.5 AIN0 P2.6/AOPWM0 P2.7/AOPWM1 VDD2 AVDD AVSS AIN1 VSS IFB- Figure 3. IRMCF341 Pin Configuration This document is the property of International Rectifier and may not be copied or distributed without expressed consent. IFBO IFB+ 5 IRMCF341 4 Application Connections Typical application connection is shown in Figure 4. All components necessary to implement a complete sensorless drive control algorithm are shown connected to IRMCF341. XTAL0 XTAL1 PLLVDD 1.8V PLLVSS System Clock 4MHz Crystal PLL Logic System clock Host Microcontroller (UART) PWMUH PWMUL PWMVH P1.2/TXD P1.1/RXD UART Dual Port Memory (2KB) & MCE Code Memory (4KB) Motion Control Modules Other Communication (I2C or SPI) SDA/CS0 SCL/SO-SI 3.3V P1.0/T2 P1.3/SYNC/SCK P1.4/CAP P1.5 P1.6 P1.7 P2.0/NMI I2C/SPI Low Loss Space Vector PWM PWMVL PWMWH PWMWL Washer IGBT Gate Drive (i.e.IRS2631D) GATEKILL PORT1 Digital I/O Control P2.1 P2.2 P2.3 P2.4 P2.5 P3.0/INT2/CS1 P3.2/INT0 P3.3/INT1 P3.5/T1 Motion Control Sequencer PORT2 IFBC+ 0.6V Motor DC bus shunt resistor PORT3 S/H Timers Watchdog Timer IFBCIFBCO AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 Other analog input (0-1.2V) P2.6/AOPWM0 DC bus voltage PWM0 PWM1 PWM2 Test Mode Circuit JTAG Port Interface 5 RESET System Reset P2.7/AOPWM1 Analog Output P3.1/AOPWM2 Local RAM (2KB) 12bit A/D & MUX TSTMOD Test Mode JTAG Control TCLK P5.3/TDI P5.1/TSM P5.2/TDO RESET VDD1 VDD2 VSS Program RAM (48KB) AIN6 AREF CMEXT Optional External Voltage Reference (0.6V) 3.3V 1.8V 8051 CPU AVDD AVSS 1.8V IRMCF341 Figure 4. Application Connection of IRMCF341 This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 6 IRMCF341 5 Package Dimensions Figure 5. Package Drawing This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 7 IRMCF341 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. 5/26/2006 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. 8