EL SEGUNDO, Calif. - May 2005 - International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced the IR3103 motor drive IC, expanding its iMOTION™ integrated design platform offerings. The new device is a half-bridge FredFET with gate driver IC that does not require a heatsink for electronic motor drive applications up to 180W. Packaged in a sleek 11-pin mini SIP, the IR3103 simplifies the design of extremely compact, high performance two- and three-phase half-bridge inverter motor drives for appliances such as fans and refrigerator compressors.

"The transition away from noisy and inefficient motor controls based on triacs to quieter, more efficient and compact controls are made possible with the IR3103. Our latest solution simplifies the transition to more efficient, variable speed driver designs for low power appliance products and shrinks the footprint," said David Tam, Vice President of International Rectifier's Consumer and Industrial group.

Propagation delays for the high- and low-side power FredFET devices are matched for better synchronization of switching characteristics and lower power dissipation. The device can operate up to a maximum input voltage rating of 500V up to 150° Celsius. The package features isolation ratings up to 1500Vrms/min., and enables shorter inter-component connections, reducing unwanted EMI emissions. ESD protection is included on all leads, and a bootstrap diode for the high-side driver section is integrated into the IR3103. In addition, a single-polarity power supply is all that is needed to drive the internal circuitry, simplifying module use.

Part Number	Current Rating @ TA=25°C	Current Rating @ TA=60°C	VIN max[V]	Speed	Bootstrap Diode	Package
IR3103	1.0A	0.75A	500	<20kHz	Included	11-pin MiniSIP

Design Tools

To accelerate the design process and demonstrate the features of the IC, the IRADK31 demo kit is available. The kit includes a complete three-phase 250W motor drive system controlled by easy-to-use graphical user interface software. The software can compare several motor control drive strategies for traditional AC induction motors as well as advanced brushless DC (BLDC) motors. More information on the IRADK31 is posted on the IR Web site:

Availability and Pricing

The IR3103 is available immediately. Pricing is US $1.25 each in 10,000-unit quantities. Prices are subject to change.

About iMOTION™

International Rectifier's iMOTION integrated design platform consists of a development system, mixed-signal analog chip sets and power stages, which when co-designed together, simplify Motor Control designs and bring energy-efficient, cost-effective solutions to market faster. More details on the iMOTION platform, as well as links to design assistance, are posted on the iMOTION Web page.