IR’s New Mid-Power SmartRectifier™ IC Boosts Overall System Efficiency One Percent Using 75 Percent Fewer Components

IR's New Mid-Power SmartRectifier™ IC Boosts Overall System Efficiency One Percent Using 75 Percent Fewer Components

International Rectifier, IR®(NYSE: IRF), a world leader in power management technology, today introduced the IR1166 SmartRectifier IC for AC-DC power converters used in laptops, mini-PCs, LCD and PDP televisions, game systems, home theater audio, motor drive, and other digital computing and home entertainment systems. Enabling smaller and cooler supplies, the eight-pin IR1166 IC simplifies the design of mid-power secondary synchronous rectification (SR) circuits of resonant half-bridge converters and flyback converters designed for 50-150W discontinuous conduction mode (DCM), critical conduction mode (CrCM), and continuous conduction mode (CCM).

“IR’s new SmartRectifier IC uses a new technique for precise, direct sensing of voltage thresholds across the SR MOSFETs, allowing fast, accurate control to minimize power losses in mid-power flyback circuits. In contrast, traditional complex and bulky current transformer control circuits waste energy because of the large reversing currents required to sense polarity shifts through the SR MOSFETs,” said Mario Battello, marketing manager at International Rectifier.

“Compared to discrete solutions, IR1166S increases overall system efficiency by one percent while using 75 percent fewer components, and allowing a 25 percent reduction in SR system cost,” Battello added.