INTERNATIONAL RECTIFIER - THE POWER MANAGEMENT LEADER

IR’s PowIRStage family addresses the challenging power conversion demands of next generation servers, storage, and communication systems

The PowIRstage® integrates a high performance synchronous buck gate driver with IR’s latest generation control & synchronous MOSFETs, with low RDS(on) and gate charge, in addition to a schottky diode. PowIRstage® provides the industry’s best 60A rating with lower losses, higher efficiency and excellent thermal management. PowIRstage® simplifies the design & implementation of high-current, high-performance multi-phase buck regulators versus traditional discrete designs and alternative power stage solutions and is compatible with most analog & digital controllers on the market today

FEATURES
Output current capability of up to 60A
Peak efficiency up to 95% at 1.2VOUT
Footprint compatible solutions rated at 40A to 60A
Input voltage (VIN) range of 4.5V to 15V
Output voltage (VOUT) range from 0.25V to 3.3V
Operation up to 1MHz
Integrated current sense amplifier
Thermal flag
Body-BrakingTM load transient support
Compliant with Intel DrMOS V4.0
Efficient dual sided cooling
Lead free RoHS compliant package

SupIRBuck Gen2 News

BENEFITS
Industry best electrical efficiency
Industry best thermal performance
Integrated current sense amplifier achieves superior current sense accuracy.
Flexibility to select PWM controller of preference
Simplifies DC-DC converter design
Reduces stray parasitic effects
Smallest footprint
Cost reduction

SPECIFICATIONS

Part Number Package IOUT max VIN Peak Efficiency fsw VOUT
IR3550 PQFN
6 x 6 x 0.9mm
60A 4.5V-14V 95%
(12VIN, 1.2VOUT, 300kHz)
1000kHz 0.25V-3.3V
IR3553 PQFN
6 x 4 x 0.9mm
40A 4.5V-15V 93.8% at 1.2V 1000kHz 0.25V-3.3V

TYPICAL MULTI-PHASE APPLICATION USING THE IR3550

 
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