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Date: 26th Sept 08
IR's 25W to 500W
Class D audio power amplifier reference design
International Rectifier introduced IRAUDAMP7 reference
design for Class D audio amplifiers for applications including
home theater systems, musical instruments and car entertainment.
With a power range from 25W to 500W, the IRAUDAMP7 offers
a high degree of scalability within minutes simply by changing
some of the components required on a single layer PCB.
The two parts available in this series are IRAUDAMP7D &
IRAUDAMP7S
Some of the key features include,
1. The IRAUDAMP7D features IRS2092 digital audio driver
IC in a DIP16 package together with through-hole
components.
2. The IRAUDAMP7S features IRS2092S in an SOIC package with
surface-mount components.
3. Both reference designs are paired with the IRFI4019H-117P
digital audio dual MOSFET to further enhance
scalability.
4. Over-current protection, over-voltage protection, under-voltage
protection, DC-protection, and over
temperature protection.
5. Housekeeping functions include a +/- 5V supply for analog
signal processing for the preamplifier and
a +12V supply (Vcc) referenced to -B for the Class D gate
driver stage.
6. Nominal Supply Voltage of +/- 50V
Rated output power:
Half Bridge (8 Ohms) ---- 125W x 2
Half Bridge (4 Ohms) ---- 250W x 2
Full Bridge (8 Ohms) ---- 500W x 2
Pricing: US $199 each and is subject to change.
For further information visit: http://www.irf.com
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