IR Intros IR3220S Automotive Motor Controller IC

International Rectifier Corp. (IR, El Segundo, CA) introduced its new integrated IR3220S H-bridge motor controller IC for automotive dc applications up to 6A. The functionality of the IR3220S cuts component count by as much as 90% compared to discrete designs, reducing design time and cost by up to 20%. The IR3220S enables rugged designs with benchmark electrical characteristics. The IR3220S has been specifically designed to drive motors and actuators in automotive applications.

Rated at 40V, the IR3220S integrates an H-bridge controller with two high-side HEXFET® MOSFETs in a single 20-pin package. The H-bridge circuit occupies 21mm x 25mm, or less than 1in², as much as 80% smaller than an H-bridge circuit using discrete devices. The IR3220S also integrates a programmable soft-start sequence using an internal 20kHz pulse-width modulator to limit in-rush currents. The thermal performance of the H-bridge circuit using the IR3220S and low-side IRF7484 MOSFETs enable operation up to 6A at 85°C junction temperature without a heatsink. The low on-resistance, low 10µA leakage current, soft-start function and sleep mode all combine to reduce heat during start-up and continuous duty.

The new IR3220S is now available. Pricing is $2.90 each in 10,000-unit quantities.