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IR half-bridge FredFET simplifies design of inverter motor drives

Posted: 25 May 2005 ?? ?Print Version ?Bookmark and Share

Keywords:imotion? international rectifier? ir? fredfet? gate driver ic?

Expanding its iMOTION integrated design platform offerings, International Rectifier (IR) unveiled 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 11-pin mini SIP, the IR3103 motor drive IC 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, VP of IR'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, said IR. The device can operate up to a maximum input voltage rating of 500V up to 150C. In addition, the package features isolation ratings up to 1,500Vrms/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.

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.

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

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