International Rectifier IRAUDAMP17 Reference Design Download Page 1

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IRAUDAMP17 REV

1.1

IRAUDAMP17

100W/4

Ω

2 Channel Class D Audio Power Amplifier

Using the IR4302

Jun Honda, Liwei Zheng

CAUTION:

International Rectifier suggests the following guidelines for safe operation and
handling of IRAUDAMP17 Demo board;



Always wear safety glasses whenever operating Demo Board



Avoid physical contact with exposed metal surfaces when operating Demo
Board



Turn off Demo Board when placing or removing measurement probes

Summary of Contents for IRAUDAMP17

Page 1: ...Liwei Zheng CAUTION International Rectifier suggests the following guidelines for safe operation and handling of IRAUDAMP17 Demo board Always wear safety glasses whenever operating Demo Board Avoid p...

Page 2: ...P17 REV 1 1 TABLE OF CONTENTS PAGE INTRODUCTION 3 SPECIFICATIONS 3 CONNECTION SETUP 4 TEST PROCEDURES 5 PERFORMANCE AND TEST GRAPHS 5 THERMAL INFORMATION 8 BILL OF MATERIALS 10 PCB SPECIFICATIONS 11 R...

Page 3: ...no 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 Over temperature protection...

Page 4: ...Voltage Range 40 52V 30 42V R7 R10 390 240 Z5 36V 27V Connection Setup Fig 1 Typical Test Setup Connector Description Audio IN CN1 Analog input for CH1 and CH2 POWER P3 Single supply CH1 OUT P1 Output...

Page 5: ...iescent current for the power supply should be 70mA 10mA at 52V Functionality Audio Tests 9 Sweep the audio signal voltage from 15 mVRMS to 1 5 VRMS 10 Monitor the output signals at P1 P2 with an osci...

Page 6: ...Anlr THD N Ratio Left Ch2 42V 4ohms 0 006 10 0 02 0 05 0 1 0 2 0 5 1 2 5 20m 100 50m 100m 200m 500m 1 2 5 10 20 50 W THD Nvs Power Fig 3 Frequency Response Test Conditions VBus 52V Set Output 1V Load...

Page 7: ...ta Solid 2 Fft Ch 2 Ampl Left Ch2 140 20 120 100 80 60 40 20 0 d B V 10 20k 20 50 100 200 500 1k 2k 5k 10k Hz Noise Floor with 1Vrms Output Test Conditions VBus 52V Set Output 1Vrms 1 KHz Load Impedan...

Page 8: ...t Conditions Tamb 25 C natural convection cooling Both Channel Driven 1 8Po continuous 30mins Temperature measured by infrared camera Fig 8 IRAUDAMP17 with heatsink Vbus 52V IR4302 s temperature satur...

Page 9: ...P2 C34 0 1uF 63V D9 D8 CT_SGND C12 2 2nF 50V R19 180R R24 180R C7 2 2nF 50V R22 180R VSS R21 180R C13 2 2nF 50V R20 180R R23 180R C8 2 2nF 50V R1 100k R3 330 C1 1nF R4 330 C2 1nF R11 3 01k 1 R12 3 01...

Page 10: ...S3 LED BLUE CLEAR 0603 SMD 1 Digikey 21 IR4302 IC1 2 CH PowIRaudio integrated Class D IC 1 IR 22 Sagami 7G17A 220M R L1 L2 Power Inductors Class D Inductor 22uH 2 Inductors Inc 23 281 1414 ND P1 P2 P3...

Page 11: ...EX 4 40 STAINLESS STEEL 4 Digikey 52 H729 ND No 4 Lock Washer WASHER LOCK INTERNAL 4 SS 4 Digikey 53 BER161 ND Thermal Pad THERMAL PAD 020 4X4 GAPPAD 1 6 Digikey IRAUDAMP17 Heatsink Fig11 PCB Specific...

Page 12: ...www irf com Page 12 of 13 IRAUDAMP17 REV 1 1 PCB Layout Top side Bottom side Note Refer to AN1170 for footprint and board mounting details Fig 12 Fig 13...

Page 13: ...descriptions Revision Changes description Date Rev 1 0 Released May 16 2012 Rev 1 1 BOM R50 10ohm May 24 2012 WORLD HEADQUARTERS 101 N Sepulveda Blvd El Segundo California 90245 Tel 310 252 7105 Data...

Page 14: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information International Rectifier IRAUDAMP17...