IR's IRS2053M 3-Channel Class D Audio Driver IC Delivers Superior Sound Quality in a Smaller Footprint

Nov 18, 2010 | Technology Media

EL SEGUNDO, Calif. — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced the IRS2053M 200V driver IC for use in Class D Audio applications including high performance home theater systems and car audio amplifiers requiring a compact footprint.

Based on a Class D audio amplifier topology, the IRS2053M integrates three channels of high-voltage, high performance half-bridge drivers with PWM modulators. The new device's comprehensive set of protection features includes programmable bi-directional current sensing to protect high- and low-side MOSFETs from over-current conditions. Other key features include logic compatible input and floating PWM input.

"The IRS2053M offers a Class D Audio solution with excellent sound quality, delivering a smaller footprint and higher power compared to alternative solutions when combined with IR's high efficiency power MOSFETs. Moreover when co-designed with the single channel IRS2092(S) and four channel IRS2093M, the IRS2053M offers the flexibility to configure 2.1channel, 6 channel and 6.1channel applications," said Jun Honda, director of audio systems engineering, Energy Saving Products Business Unit.

IR's extensive range of digital audio MOSFETs addressing output power from 50W to 150W, are optimized for the IRS2053M to reduce component count and PCB space while achieving improved performance, efficiency, THD and EMI.

IRAUDAMP11Three-channel 120 W Half-bridge120 W x 3 channels, (THD=1%, 1kHz, 4 Ohms)0.02% THD+N distortion @ 60W, 4 OhmsResidual noise 220 µV, IHF-A weighted, AES-17 filter90% Efficiency @ 120W, 4 Ohms, Class-D StageOCP, OVP, UVP & OTPSelf-oscillating half-bridge topology with optional clock synchronizationFeaturing IRS2053M Controller and Gate Driver IC and IRF6665 DirectFET MOSFETs

A datasheet and application note are available on the International Rectifier website at In addition, the IRAUDAMP11 Reference Design featuring the IRS2053M is also available.

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