IRAUDAMP15 International Rectifier, IRAUDAMP15 Datasheet - Page 3

• Manufacturer Part Number: IRAUDAMP15
• Description: Amplifier IC Development Tools Two Channel 35W IR4311 40 Ohm BRD
• Manufacturer: International Rectifier
• Type: Power Amplifiersr

Specifications of IRAUDAMP15

• Rohs: yes
• Product: Demonstration Boards
• Tool Is For Evaluation Of: IR4311
• Operating Supply Voltage: 18 V to 31 V
• Operating Supply Current: 90 mA
• For Use With: IR4311

Introduction
The IRAUDAMP15 reference design is a two-channel, 35W/ch half-bridge Class D audio power
amplifier with single power supply. This reference design demonstrates how to use the IR4311 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.
Applications
Features
Output Power:
Multiple Protection Features:
PWM Modulator:
Specifications
Supply Voltages
Load Impedance
Self-Oscillating Frequency
Gain Setting
IR Devices Used
Modulator
Power Supply Range
Output Power CH1-2: (1% THD+N)
Output Power CH1-2: (10% THD+N)
Rated Load Impedance
Idling Supply Current
Total Idle Power Consumption
Distortion
Residual Noise
Channel Efficiency
www.irf.com
General Test Conditions (unless otherwise noted)
Electrical Data
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Docking station audio systems
PC audio systems
Musical instruments
Karaoke amplifiers
Game consoles
Powered speaker systems
Car audio amplifiers
*
Power Supply Voltage Range
*
R25~R28
IR4311 PowIRaudio integrated Class D IC
Self-oscillating, second order sigma-delta modulation, analog input
35W x 2 channels (4Ω load)
Over-current protection (OCP), high side and low side
Over-voltage protection (OVP),
Under-voltage protection (UVP), high side and low side
Over-temperature protection (OTP)
Self-oscillating half-bridge topology
IRAUDAMP15 REV
Typical
18-31V*
18-31V*
400kHz
21.4dB
0.02%
230V
90mA
2.8W
2-4Ω
2-4Ω
26W
35W
96%
18~27V
220Ω
1.0
No input signal, Adjustable
1kHz
1kHz
No input signal
No input signal
Resistive load
1Vrms input yields rated power
Single power supply;
Resistive load
THD+N @ 5W, 4Ω
IHF-A weighted, AES-17 filter
Single-channel driven, 35W, Class D
stage
Notes / Conditions
Notes / Conditions
27~37V
470Ω
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