IRAUDAMP19: 100W x 2 @ 4Ω, 41 ~ 52V in, Class D


The IRAUDAMP19 reference design is a two-channel, 100W/ch (4Ω / 52V Bus voltage) half-bridge Class D audio power amplifier with single power supply. This reference design demonstrates how to use the IR4301 IC with single power supply, implement protection circuits, and design an optimum PCB layout using PowIRaudio integrated Class D IC. This reference design does not require additional heatsink or fan cooling for normal operation (one-eighth of continuous rated power).

The reference design provides all the required housekeeping power supplies for ease of use. The two-channel design is scalable for power and the number of channels.


Manufacturer Infineon Technologies
Category Audio Amplifiers
Eval Board Part Number IRAUDAMP19-ND
Eval Board Supplier Infineon Technologies
Eval Board Normally In Stock
Amplifier Type Class D
Number of Outputs Stereo
Output Power (RMS) @ Load 100 W x 2 @ 4 Ω (no heatsink)
Voltage In 41 ~ 52 V
THD+N (1kHz) @ Conditions < 0.02% @ 10 W (4 Ω)
Features Over Current Protection
Over Voltage Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >90%, 1 ch, 100 W
Standby Current [Typical] - Not Given
Quiescent Current [Typical] - Not Given
Component Count + Extras 130 + 8
Application / Target Market Audio: Hi Fi
Audio: Powered Speakers
Home Theater
Portable Devices
Design Author Infineon Technologies
Main I.C. Base Part IR4301
Quiescent Current [Maximum] 3 mA (LS), 2.4 mA (HS)
Standby Current [Maximum] - Not Given
Date Created By Author 2013-04
Date Added To Library 2020-10

Eval Board

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Quantity Available: 16