International Rectifier introduces digital motion control ICs

El Segundo, CA—International Rectifier (IR) has introduced two additions to its iMotion integrated design platform for motion control, IRMCK201 and IRMCK203 digital control ICs.

11/18/2003


El Segundo, CA— International Rectifier (IR) has introduced two additions to its iMotion integrated design platform for motion control. The company claims IRMCK201 and IRMCK203 digital control ICs revolutionize the task of configuring motion 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), IRMCK201 and IRMCK203 contain a unique Motion Control Engine (MCE) that eliminates software programming. Motion control products developed with the new digital control ICs and the iMotion chip set can be launched faster because commands are simplified to menu-driven selections. The new devices can be used in many industrial and automation applications, such as dental drills, semiconductor wafer-handling equipment, pick-and-place machines and other precision motion control applications.

IRMCK201 features an encoder feedback-based, closed-loop current and velocity control for servo applications. It's also designed to be compatible with the rest of IR's iMotion chip set, which includes IR2175 linear current-sensing IC; IR2136 three-phase inverter-driver IC; and IRAM 6 A to 20 A integrated power modules. IR2175 provides current feedback information, and features a 130-kHz fast frequency output for high bandwidth and fast acceleration. A 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.

IRMCK203 is a digital control IC solution for sinusoidal, current-based, sensorless drives, and enables design of ultra high-speed (100,000 rpm) and wide speed range (greater than 20:1) applications with sensorless control. These sensorless feedback circuits combine with low loss space vector PWM and a unique starting algorithm for permanent magnet ac motor, which minimize torque and ripple to increase efficiency.

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

Control Engineering Daily News Desk
Jim Montague, news editor
jmontague@reedbusiness.com





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