Driver IC targets Class D audio applications from 50-150 W.

Press Release Summary:

Based upon half bridge topology, 200 V Model IRS2093 integrates 4-channels of Class D audio amplifier drivers, error amplifier, gate driver, and 800 kHz analog PWM modulator in single IC. Device includes programmable bidirectional over-current protection with self-reset control, under-voltage lockout protection, and programmable preset deadtime. Housed in MLPQ48 package, IC is suited for home theater systems and car audio amplifiers.

Original Press Release:

IR's IRS2093 Integrates Four Channels in Single Compact IC to Shrink Board Size by 50 Percent

EL SEGUNDO, Calif. - International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced the IRS2093 driver IC for high performance Class D Audio applications from 50W to 150W including home theater systems and car audio amplifiers.

Based upon a half bridge topology, the IRS2093 integrates four channels of high-voltage, high performance Class D audio amplifier drivers with PWM modulators in a single IC. Housed in a compact MLPQ48 package, the new IC shrinks board size by a further 50 percent compared to previous offerings.

"With the addition of an external MOSFET and passive components, a complete four channel Class D audio amplifier can be realized in a 50 percent smaller footprint, delivering the efficiency and size advantages of Class D while providing the high audio performance traditionally associated with Class AB solutions," said Jun Honda, IR's systems engineering manager, Energy Saving Products Business Unit.

The IRS2093 offers error amplifier, PWM comparator, gate driver, and robust protection circuitry. In addition the new 200V device features an analog PWM modulator with frequency up to 800 kHz, programmable bidirectional over-current protection (OCP) with self-reset control, under-voltage lockout protection (UVLO), and programmable preset deadtime for a scalable power design.

The IC may be co-designed with IR's extensive range of digital audio MOSFETs addressing output power from 50W to 150W. These MOSFETs have been optimized around parameters critical to audio performance such as efficiency, THD, and EMI.


Class D Audio IC

Part Number    Package 	Channels	Offset Voltage	Sink/Source Current	VCC Range (with UVLO)	Min/Max Output Voltage	Selectable Dead Time
IRS2093MPbF MLPQ48 4 200V~+/-100V 0.6/0.5A 10-15V 10-15V 45/65/85/105ns

MOSFET Specifications

Part Number	Package       Bvdss	Rds(on) typ. @10v  Id@Tc = 25°C	Qg typ
IRF6645 DirectFET SJ 100V 28mOhms 25A 14nC
IRF6665 DirectFET SH 100V 53mOhms 19A 8.7nC
IRF6775M DirectFET MZ 150V 47mOhms 28A 25nC
IRF6785M DirectFET MZ 200V 85mOhms 19A 26nC
IRFI4024H-117P TO-220 Full-Pak 5P 55V 48mOhms 11A 8.9nC
IRFI4212H-117P TO-220 Full-Pak 5P 100V 58mOhms 11A 12nC
IRFI4019H-117P TO-220 Full-Pak 5P 150V 80mOhms 8.7A 13nC
IRFI4020H-117P TO-220 Full-Pak 5P 200V 80mOhms 9.1A 19nC

A datasheet and application note on the IRS2093 are available on the website at The IRAUDAMP8 reference design, featuring the IRS2093 is also available.

Availability and Pricing

Pricing for the IRS2093 begins at US $10.80 in 10,000-unit quantities. The IRAUDAMP8 reference design is priced at US $294.00. Production orders are available immediately. The devices are RoHS compliant and industrial qualified. Prices are subject to change

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to

Trademark Notice

IR® is a trademark of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.

For more information, contact Graham Robertson, 310-726-8512.For more information, contact Sian Cummins, 1 310 252 7148.

More from Electrical Equipment & Systems

All Topics