Infineon Technologies IRAUDAMP17 Reference Design
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IRAUDAMP17 REV 1.1 IRAUDAMP17 100W/4Ω x 2 Channel Class D Audio Power Amplifier Using the IR4302 By 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 physic ...
IRAUDAMP17 REV 1.1 TABLE OF CONTENTS........................... PAGE INTRODUCTION..............................................................................3 SPECIFICATIONS ...........................................................................3 CONNECTION SETUP........................................................... ...
IRAUDAMP17 REV 1.1 Introduction The IRAUDAMP17 reference design is a two-channel, 100W/ch (4 Ω/52V Bus voltage) half-bridge Class D audio power amplifier with single power supply. This reference design demonstrates how to use the IR4302 IC with single power supply, implement protection circuits, and design an optimum PCB layo ...
IRAUDAMP17 REV 1.1 Residual Noise 220V IHF-A weighted, AES-17 filter Channel Efficiency 96% Single-channel driven,100W Class D stage *Need to change components as below to achieve 30V~42V power supply voltage range without heatsink With Heatsink Without Heatsink Power Supply Voltage Range 40~52V 30~42V R7~R10 390Ω 240Ω Z ...
IRAUDAMP17 REV 1.1 Test Procedures Test Setup: 1. Connect 4, 250W load to both output connectors, P1 and P2 and audio analyzer (Ap). 2. Connect Audio Signal Generator to CN1 for CH1 and CH2 respectively (Ap). 3. Connect a single power supply to P3 pre-adjusted to 40-52V as shown on Figure above 4. Turn on the power supply. ...
IRAUDAMP17 REV 1.1 Test Conditions: VBus = 42V(without heatsink) Input Signal=1 kHz Load Impedance = 4 ohms Color Sweep Trace Line Style Thick Data Axis Comment 1 1 Blue Solid 2 Anlr.THD+N Ratio Left Ch1 42V 4ohms 1 3 Magenta Solid 2 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 200 ...
IRAUDAMP17 REV 1.1 Noise Floor Test Conditions: VBus = 52V Load Impedance = 4 ohms No Input Signal Color Sweep Trace Line Style Thick Data Axis Comment 1 1 Blue Solid 2 Fft.Ch.1 Ampl Left Ch1 1 2 Magenta 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 Flo ...
IRAUDAMP17 REV 1.1 Efficiency 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0 20 40 60 80 100 120 Power (W) Efficiency Thermal Information: 1/8 Po Thermal Test Conditions: Tamb=25°C natural convection cooling Both Channel Driven 1/8Po continuous 30mins Temperature measured by infrared camera Fig 8 IRAUDAMP17 with heats ...
IRAUDAMP17 REV 1.1 Schematic Fig 10 +B VAA R30 4.7R C25 0.1uF R41 1R C15 1nF C27 0.1uF,100V SCH_DB_4302 Rev1.2 D1 +B SD VCC VSS R31 4.7R C26 0.1uF R42 1R C17 1nF C18 10uF,16V C28 0.1uF,100V C6 2.2nF,50V C11 2.2nF,50V C9 2.2nF,50V C14 2.2nF,50V D2 1N4148 R28 4.7R R32 33K D4 1N4148 IN-2 3 COMP2 2 CLIP 1 NC 30 VP2 24 VS2 25 GND 5 ...
IRAUDAMP17 REV 1.1 Bill of Materials No Digikey P/N Designator Description Quantity Vender 1 399-1082-1-ND C1, C2, C3, C4, C15, C17 CAP CER 1000PF 50V 10% X7R 0603 6 Digikey 2 587-2668-1-ND C5, C10 CAP CER 10UF 10V 10% X7R 0805 2 Digikey 3 490-1500-1-ND C6, C7, C8, C9, C11, C12, C13, C14 CAP CER 2200PF 50V 10% X7R 0603 8 Digik ...
IRAUDAMP17 REV 1.1 44 RHM10KARCT-ND R52, R53, R56 RES 10K OHM 1/8W 5% 0805 SMD 3 Digikey 45 360-1758-ND S1 SWITCH TOGGLE SPDT .4VA SEAL PCB 1 Digikey 46 DDZ5V1BDICT-ND Z1, Z2 DIODE ZENER 5.1V 500MW SOD-123 2 Digikey 47 BZT52C11-FDICT-ND Z3 DIODE ZENER 11V 500MW SOD123 1 Digikey 48 MMSZ5263BT1GOSCT- ND Z4 DIODE ZENER 56V 500MW ...
IRAUDAMP17 REV 1.1 PCB Layout Top side: Bottom side: Note: Refer to AN1170 for footprint and board mounting details. Fig 12 Fig 13 ...
IRAUDAMP17 REV 1.1 Revision changes 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 and specifications subject to chang ...
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