IRAUDAMP3 Datasheet, PDF (1/40 Pages) International Rectifier – 120W x 6 Channel Class D Audio Power Amplifier using IRS20124S and IRF6645

IRAUDAMP3
120W x 6 Channel Class D Audio Power Amplifier
using IRS20124S and IRF6645
By
Jun Honda, Johan Strydom and Jorge Cerezo
Table of Contents
Page
Introduction .......................................................................................... 1
Specifications ....................................................................................... 2
Functional Description.......................................................................... 4
Protection .............................................................................................11
Typical Performance ............................................................................15
Design Documents ..............................................................................20
The IRAUDAMP3 reference design is an example of a complete six-channel 120W half-bridge
Class D audio power amplifier. The reference design is intended to demonstrate how to use the
IRS20124S, implement protection circuits, and design an optimum PCB layout using IRF6645
DirectFET^® MOSFETs. The modular design consists of a motherboard with three identical daughter
boards. The resulting design requires no heat-sinking for normal operation. The reference design
includes all the required housekeeping power supplies for ease of use.
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