Sensorless Motor Driver 3.3V 80-Pin PQFP

IRMCK203 is a high performance digital motion control IC for Sensorless AC permanent magnet motor application. Control is based on closed loop vector control for sinusoidal Back EMF motors. With IRMCK203, the users can readily build a high performance Sensorless drive system without any programming effort and minimum start-up time. Built-in unique start-up and ramping algorithm enables wide application. This IC is versatile enough that the users can configure and optimize system performance according to the needs of each application. With International Rectifier iMOTION products including high voltage ICs such as IR2175 current sensing IC and IRAM series of Intelligent IGBT module in combination with IRMCK203, the end result is a fully optimized system with reduced electronics component counts. This simplifies the design for low cost Sensorless drive modules. IRMCK203 can be easily adapted to various permanent magnet motors through ServoDesignerTM tool, which is the fully configurable graphic user interface tool.

• Complete Sensorless control IC for Permanent Magnet AC motors
• No phase voltage feedback sensing required
• Sinusoidal current waveform with Synchronously Rotating Frame closed loop current control
• High starting torque and smooth speed ramping
• Direct interface to IR2175 current sensing high voltage IC
• Auto Retry at startup with configurable starting torque
• Versatile loss minimization Space Vector PWM
• Serial communication interface (RS232C, RS422,SPI)
• I2C serial interface to 1k bit serial EEPROM for parameter storage for stand alone operation
• Phase loss/Overcurrent/Overvoltage protection
• 7-bit discrete I/O for sequencing and status monitor
• Integrated brake IGBT control for dc bus voltage limitation
• ServoDesigner TM tool for easy operation
• Parallel interface for microcontroller expansion