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

Summary

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).

Specifications

Manufacturer	Infineon Technologies
Category	Audio Amplifiers
Eval Board Part Number	IRAUDAMP9-ND
Eval Board Supplier	Infineon Technologies
Eval Board	Board not Stocked
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 Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>85%, 350 ~ 1700 W @ 2 Ω, ±75 V
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	+67 mA, -105 mA
Component Count + Extras	185 + 36
Application / Target Market	Audio: Hi Fi Audio: Home Theater Systems Audio: Powered Speakers Automotive
Design Author	Infineon Technologies
Main I.C. Base Part	IRS2092
Quiescent Current [Maximum]	- Not Given
Standby Current [Maximum]	- Not Given
Date Created By Author	2011-08
Date Added To Library	2025-10