IRAUDAMP7S-150: 500W x1 @ 8Ω / 250W x2 @ 4Ω, ±45 ~ 60V in

Summary

The IRAUDAMP7S reference design is a two-channel Class D audio power amplifier that features output power scalability. The IRAUDAMP7S offers selectable half-bridge (stereo) and full-bridge (bridged) modes.

This reference design demonstrates how to use the IRS2092 Class D audio driver IC, along with IR’s digital audio dual MOSFETs, such as IRFI4024H-117P, IRFI4019H-117P, IRFI4212H-117P and IRFI4020H-117P, on a single layer PCB.

The design shows how to implement peripheral circuits on an optimum PCB layout using a single sided board. The resulting design requires a small heatsink for normal operation (one-eighth of continuous rated power).

The reference design provides all the required housekeeping power supplies and protections.

NOTE: Unless otherwise noted, this user’s manual is based on the 150 V model, IRAUDAMP7S-150. Other output power versions can be configured by replacing components given in the component selection of Table 5 on page 36.

Specifications

Manufacturer	Infineon Technologies
Category	Audio Amplifiers
Eval Board Part Number	IRAUDAMP7S-ND
Eval Board Supplier	Infineon Technologies
Eval Board	Board not Stocked
Amplifier Type	Class D
Number of Outputs	Stereo
Output Power (RMS) @ Load	125 W x 2 @ 8 Ω 250 W x 2 @ 4 Ω 500 W @ 8 Ω
Voltage In	±45 ~ 60 V
THD+N (1kHz) @ Conditions	< 0.007% @ 60 W (4 Ω)
Features	Over Current Protection Over Voltage Protection Thermal Protection Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>80%, 60 ~ 500 W @ 8 Ω (bridged), 50 V >70%, 40 ~ 245 W @ 4 Ω (stereo), 50 V
Standby Current [Typical]	+50 mA/-80 mA
Quiescent Current [Typical]	70 mA
Component Count + Extras	117 + 44
Application / Target Market	Audio: Hi Fi Audio: Home Theater Systems Audio: Powered Speakers Automotive
Design Author	Infineon Technologies
Main I.C. Base Part	IRFI4212H IRS2092
Quiescent Current [Maximum]	- Not Given
Standby Current [Maximum]	- Not Given
Date Created By Author	2008-09
Date Added To Library	2025-10