IRAUDAMP18: 35W x2 @ 4Ω, 18 ~ 31V in, Class D

Summary

The IRAUDAMP18 reference design is a two-channel, 35 W/ch half-bridge Class D audio power amplifier with single power supply.

This reference design demonstrates how to use the IR4312 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.

Specifications

Manufacturer	Infineon Technologies
Category	Audio Amplifiers
Eval Board Part Number	IRAUDAMP18-ND
Eval Board Supplier	Infineon Technologies
Eval Board	Normally In Stock
Amplifier Type	Class D
Number of Outputs	Stereo
Output Power (RMS) @ Load	35 W x 2 @ 4 Ω
Voltage In	18 ~ 31 V
THD+N (1kHz) @ Conditions	< 0.018% @ 3 W (4 Ω)
Features	Differential Inputs Fault Indication Over Current Protection Over Voltage Protection Shutdown, Enable, Standby Thermal Protection Turn On/Off Depop Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>85%, 5 ~ 35 W @ 4 Ω, 31 V
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	70 mA
Component Count + Extras	108 + 4
Application / Target Market	Audio: Hi Fi Audio: Powered Speakers Automotive Portable Devices
Design Author	Infineon Technologies
Main I.C. Base Part	IR4312
Quiescent Current [Maximum]	- Not Given
Standby Current [Maximum]	- Not Given
Date Created By Author	2012-05
Date Added To Library	2017-05