IRAUDAMP9: 1.7 kW Mono, ±48 ~ 80V, Class D Amp


The IRAUDAMP9 reference design is a single-channel 1.7-kW @ 2Ω load half-bridge Class D audio power amplifier.

This reference design demonstrates how to use the IRS2092S Class D audio controller and external gate buffer, to implement protection circuits, and design an optimum PCB layout using the IRFB4227 (x 2 Pairs) TO-220 MOSFETs.

This reference design may require additional heatsink or fan for normal operation (one-eighth of continuous rated power).

The reference design provides all the required housekeeping power supplies for ease of use. The 1-channel design is capable of delivering higher than its rated power with provision of larger heat sink (Rth <2° C / W).


Manufacturer Infineon Technologies
Category Audio Amplifiers
Eval Board Part Number IRAUDAMP9-ND
Eval Board Supplier Infineon Technologies
Eval Board Normally In Stock
Amplifier Type Class D
Number of Outputs Mono
Output Power (RMS) @ Load 1.7 kW @ 2 Ω
Voltage In ±48 ~ 80 V
THD+N (1kHz) @ Conditions < 0.07% @ 1.7 kW (2 Ω, +/- 75 V)
Features Over Current Protection
Over Voltage Protection
Status Indication
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >85%, 350 ~ 1700 W @ 2 Ω, ±75 V
Component Count + Extras 185 + 36
Design Author Infineon Technologies
Application / Target Market Automotive
Hi Fi Audio
Home Theater
Powered Speakers
Standby Current [Typical] - Not Given
Quiescent Current [Typical] +67 mA, -105 mA
Quiescent Current [Maximum] - Not Given
Standby Current [Maximum] - Not Given
Main I.C. Base Part IRS2092
Date Created By Author 2011-08
Date Added To Library 2013-07

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