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.

Specifications

Class D Audio IC

Part Number	Package	Channels	Offset Voltage	Sink/Source Current	VCC Range (with UVLO)	Output Voltage Min/Max	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

Reference Design

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