IRAUDAMP19 2-Channel 100W/4Ω Class D Audio Power Amplifier Reference Design

Overview

The IRAUDAMP19 is a reference design for a two-channel Class D audio power amplifier based on the IR4301 PowIRaudio integrated IC. It delivers 100W per channel into 4Ω loads using a single power supply ranging from 30V to 52V DC. The design employs a self-oscillating half-bridge topology that achieves 90% efficiency and operates without an external heatsink under normal conditions. This document includes comprehensive technical specifications, connection setups, test procedures, thermal performance data, a complete schematic, and a detailed Bill of Materials (BOM). Integrated safety features include over-current, over-voltage, under-voltage, and over-temperature protection.

Referenced Parts