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Home » NEWEST Products » New by Category » Semiconductors » Audio ICs » IR432x Audio Amps and Evals Boards - International Rectifier
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International Rectifier IR432x Audio Amplifiers and Evaluation Boards

International Rectifier IR432x Audio Amplifiers

International Rectifier IR432x Audio Amplifiers and Evaluation Boards

Order International Rectifier IR432x Audio Amplifiers and Evaluation Boards View Product List

Additional Resources

International Rectifier IR4321 and IR4322 PowIRaudio™ devices integrate a PWM controller and digital audio MOSFETs to form high-performance Class D audio amplifiers. As a result of fully optimized MOSFETs co-packed with a dedicated controller IC, IR432x amplifiers operate without mechanical heatsink attached in a typical music playback usage. High voltage ratings and noise immunity in the controller IC ensures reliable operation over various environmental conditions. These audio amplifiers are ideal for use in a variety of applications, including home theater systems, docking station audio systems, game consoles, and more.


IR432x Features
  • Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package (IR4321)
  • 2 channel integrated analog input Class D audio amplifier in a small 7 x 7 mm PQFN44 package (IR4322)
  • High peak music power output
  • No mechanical heatsink required
  • Split or single power supply
  • Differential or single-ended input
  • Over-current, over-temperature and under voltage protections with self-reset function
  • Start and stop click noise reduction
  • High noise immunity
  • Clip and Fault reporting outputs (IR4322)
  • RoHS compliant
Applications
  • Home theater systems
  • Docking station audio systems
  • PC audio systems
  • Musical instruments
  • Karaoke amplifiers
  • Game consoles
  • Powered speaker systems
  • General purpose audio power amplifiers

IR4321 Block Diagram
IR4321 Block Diagram

IR4322 Block Diagram
IR4322 Block Diagram
International Rectifier IR432x Audio Amplifier Evaluation Boards

Order International Rectifier IR432x Audio Amplifier Evaluation Boards View Product List

Additional Resources

International Rectifier IR432x Audio Amplifier Evaluation Boards

International Rectifier IRAUDAMP21 and IRAUDAMP22 are reference design boards supporting IR432x audio amplifier ICs. These reference design boards demonstrate how to use the IR4321 IC or IR4322, implement protection circuits, and design an optimum PCB layout using PowIRaudio integrated Class D IC. These reference designs do not require heatsink or fan cooling for normal operation (one-eighth of continuous rated power). The designs provide all the required housekeeping power supplies for ease of use. The two-channel design is scalable for power and the number of channels.


IRAUDAMP21 Features
  • Output Power: 90W x 2 channels (10%THD+N 2Ω load; no heatsink), 135W x 2 channels (10%THD+N 2Ω load; *with heatsink)
  • Multiple Protection Features: Over-current protection (OCP), high side and low side Over-voltage protection (OVP), Under-voltage protection (UVP), high side and low side DC-protection (DCP), Over-temperature protection (OTP)
  • PWM Modulator: Self-oscillating half-bridge topology with optional clock synchronization
IRAUDAMP22 Features
  • Output Power: 50W x 2 channels (10%THD+N 2Ω load; no heatsink), 100W x 2 channels (10%THD+N 2Ω load; *with heatsink)
  • Multiple Protection Features: Over-current protection (OCP), high side and low side Over-voltage protection (OVP), Under-voltage protection (UVP), high side and low side DC-protection (DCP), Over-temperature protection (OTP)
  • PWM Modulator: Self-oscillating half-bridge topology with optional clock synchronization
IRAUDAMP21 Typical Test Set-Up
IRAUDAMP21 Typical Test Set-Up

IRAUDAMP22 Typical Test Set-Up
IRAUDAMP22 Typical Test Set-Up
  • International Rectifier