EL SEGUNDO, Calif. November 2003 - International Rectifier, IR® (NYSE: IRF) today introduces two additions to the iMOTION™ integrated design platform for Motor Control. The IRMCK201 and the IRMCK203 digital control ICs revolutionize the task of configuring Motor Control algorithms for different types of permanent magnet or AC induction motors and their position feedback devices.

Unlike traditional motor drive controls that rely on complex digital signal processors (DSP) or microprocessor control units (MCUs), the IRMCK201 and IRMCK203 contain a unique Motor Control Engine™ (MCE), which eliminates software programming. Motor Control products developed with the new digital control ICs and the iMOTION chip set can be brought to market faster, since commands are simplified to menu-driven selections.

The new devices have a wide range of high performance applications in the industrial and automation industries, such as dental drills, semiconductor wafer-handling equipment, pick and place machines and other precision Motor Control applications.

David Tam, Vice President, Consumer and Industrial Sector Business said, "There is no other single-chip Motor Control device on the market that enables the simplicity and the flexibility as the new IRMCK201 and IRMCK203. The new digital control ICs expand the portfolio of IR's industry leading iMOTION silicon solutions."

The IRMCK201 features an encoder feedback based closed loop current and velocity control for servo applications. In addition, the IRMCK201 is designed to be compatible with the rest of the iMOTION chip set, comprising of the IR2175 linear current-sensing IC, the IR2136 three-phase inverter-driver IC and the IRAM 6A to 20A integrated power modules. The IR2175 provides current feedback information and features a fast frequency output (FO = 130kHz) for high bandwidth and fast acceleration. Versatile space vector PWM with dead time insertion transfers information to and from the IC to the power devices with low loss, less noise and high efficiency.

The IRMCK203 is a digital control IC solution for sinusoidal current-based sensorless drives, and enables the design of ultra high-speed (100,000rpm) and wide speed range (>20:1) applications with sensor-less control. The sensorless feedback circuits combine with low loss space vector PWM and unique starting algorithm for permanent magnet AC motor, minimizing torque and ripple, increasing efficiency.

The new ICs include a fast, serial peripheral interface (SPI) port for connecting master/slave low- to medium-bandwidth external devices using two data lines and two control lines, and supports the asynchronous communication standards RS-232, RS-422, RS-485.

Part Number	Package	Voltage	Clock Frequency	Max Current Control Update Rate	Velocity Loop Update	Max SPI Clock
IRMCK201	100-pin QFP	3.3V	33MHz	60kHz	5/10kHz	6MHz

Part Number	Package	Voltage	Clock Frequency	Max Current Control Update Rate	Max SPI Speed
IRMCK203	80-pin QFP	3.3V	33 MHz	60kHz	6MHz

Design assistance is available using International Rectifier's ServoDesigner™ hardware development platform.

Pricing

Pricing is US $13.85 each for the IRMCK201 and US $19.85 each for the IRMCK203, both in 10,000-unit quantities.

High Resolution JPEGs are available in the Press Room.