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IRAUDAMP22: 50W ~ 100W x2 @ 2Ω, ±12 ~ ±19V in

Summary

The IRAUDAMP22 reference design is a two-channel, 50W/ch (2Ω/±13.5V; no heatsink)/ 100W/ch (2Ω/±19V; *with heatsink) half-bridge Class D audio power amplifier. This reference design demonstrates how to use the IR4322 IC, 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	IRAUDAMP22-ND
Eval Board Supplier	Infineon Technologies
Eval Board	Board not Stocked
Amplifier Type	Class D
Number of Outputs	Stereo
Output Power (RMS) @ Load	50 W x 2 @ 2 Ω 100 W x 2 @ 2 Ω (w/heatsink)
Voltage In	±12 ~ ±13.5 V ±12 ~ ±19 V (w/ heatsink)
THD+N (1kHz) @ Conditions	< 0.02% @ 1 W (4 Ω)
Features	Differential Inputs Fault Indication Over Current Protection Shutdown, Enable, Standby Thermal Protection Turn On/Off Depop Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>80%, 13.5V in, 2 Ω @ 10 ~ 50 W
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	- Not Given
Component Count + Extras	42 + 4 (Daughter board) 164 + 32 (Motherboard)
Application / Target Market	Audio: Hi Fi Audio: Home Theater Systems Audio: Powered Speakers Automotive Portable Devices
Design Author	Infineon Technologies
Main I.C. Base Part	IR4322
Quiescent Current [Maximum]	3 mA (LS), 2.4 mA (HS)
Standby Current [Maximum]	10 mA
Date Created By Author	2013-04
Date Added To Library	2019-05