60 Amp Rated IR3550 PowIRstage® Achieve Highest Current in Smallest Form Factor PRESS RELEASE DATA SHEETS The new IR3550 PowIRStage® solution integrates a high performance synchronous buck gate driver, IR’s latest generation control and synchronous MOSFETs featuring extremely low on-state resistance (RDS(on)) and gate charge, and a Schottky diode into a high density, low profile 6mm x 6mm x 0.9mm PQFN package. HI-RES GRAPHIC PowIRStage® Features Output current capability of 60A Peak efficiency up to 95% at .12VOUT Input voltage range of 4.5V to 14V Output voltage range of 0.25V to 3.3V Operation up to 1MHz High density, fully integrated solution High performance synchronous buck gate driver IR’s latest generation low RDS(on) and gate charge control & synchronous MOSFETs Schottky diode Internal components, layout & packaging optimized for best system-level electrical & thermal performance Integrated current sense amplifier offering superior current sense accuracy MOSFET fault and thermal protection Body braking for improved transient response Up to 3.8% efficiency improvements Advantages Superior performance compared to alternative power stage solutions, achieving up to a 3.8% improvement in electrical efficiency. Simplifies the design & implementation of high-current, high-performance multi-phase buck regulators versus traditional discrete designs and alternative power stage solutions. Compatible with most analog and digital controllers available on the market today, providing the designer the flexibility to select the PWM controller of preference. Featuring an integrated current sense amplifier that achieves superior accuracy and signal-to-noise ratios compared to alternate controller based inductor DCR sensing techniques. Achieves industry best peak and Thermal Design Current (TDC) electrical efficiencies. High switching frequency capability allows for the miniaturization of output inductors and input and output capacitors to help reduce overall solution size. March 2011