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IRMCF312 Datasheet(PDF) 1 Page - International Rectifier |
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IRMCF312 Datasheet(HTML) 1 Page - International Rectifier |
1 / 8 page Preliminary Information Outline Data Sheet No. 03-10-06 Advanced Information IRMCF312 Dual Channel Sensorless PM Motor Control IC MCETM(Motion Control Engine) based sinusoidal sensorless control Features MCE TM 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) I 2C 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 Product Summary Maximum clock input (crystal) 60 MHz Internal max clock frequency (SYSCLK) 120 MHz Sensorless control computation time 11 μsec typ MCE TM computation data range 16 bit signed Program RAM 48K byte RAM 8K byte GateKill latency (digital filtered) 2 μsec PWM carrier frequency data range 16 bit A/D input channels 11 A/D converter resolution 12 bit A/D converter conversion speed 2 μsec 8051 instruction execution speed 2 SYSCLK Analog output (PWM) resolution 8 bit UART baud rate (typ) 57.6 kbps Package 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 (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, 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 MCE TM 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. |
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