IRAUDAMP11

IRAUDAMP11 Datasheet

IRAUDAMP11

Part	Datasheet
IRAUDAMP11	IRAUDAMP11 (pdf)

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IRAUDAMP11 120W x 3 Channel Class D Audio Power Amplifier Using the IRS2053M and IRF6665 By Jun Honda, Liwei Zheng CAUTION: International Rectifier suggests the following guidelines for safe operation and handling of IRAUDAMP11 Demo board; • Always wear safety glasses whenever operating Demo Board • Avoid personal contact with exposed metal surfaces when operating Demo Board • Turn off Demo Board when placing or removing measurement probes IRAUDAMP11 REV Page 1 of 35 TABLE OF CONTENTS SPECIFICATIONS 3 CONNECTION SETUP 5 CONNECTOR DESCRIPTION 5 TEST 6 PERFORMANCE AND TEST GRAPHS 7 CLIPPING 10 SOFT 10 THERMAL CONSIDERATIONS 12 THERMAL INTERFACE MATERIAL’S PRESSURE CONTROL 13 POWER SUPPLY REJECTION RATIO 15 SHORT CIRCUIT PROTECTION RESPONSE 16 IRAUDAMP11 OVERVIEW 17 FUNCTIONAL 19 IRS2053 GATE DRIVER IC 19 SELF-OSCILLATING FREQUENCY 20 ADJUSTMENTS OF SELF-OSCILLATING 20 SELECTABLE 21 PROTECTION SYSTEM OVERVIEW 22 CLICK AND POP NOISE REDUCTION 24 BUS 24 INPUT SIGNAL AND GAIN SETTING 26 GAIN 26 IRAUDAMP11 FABRICATION 28 IRAUDAMP11 HARDWARE 31 IRAUDAMP11 PCB 32 IRAUDAMP11 REV Page 2 of 35 Introduction The IRAUDAMP11 Demo board is a reference design which uses only one IC IRS2053M to derive appropriate input signals, amplify the audio input, and achieve a three-channel 120 W/ch THD+N=1% half-bridge Class D audio power amplifier. The reference design demonstrates how to use the IRS2053M Class D audio controller and gate driver IC, implement protection circuits, and design an optimum PCB layout using IRF6665 DirectFET MOSFETs. The reference design contains all the required housekeeping power supplies for ease of use. The three-channel design is scalable, for power and number of channels. • AV receivers • Home theater systems • Mini component stereos • Powered speakers • Sub-woofers • Musical Instrument amplifiers • Automotive after market amplifiers Output Power: Residual Noise Distortion Efficiency Multiple Protection Features: PWM Modulator: 120W x 3 channels THD+N=1% or 170W x 3 channels THD+N=10% IHF-A weighted, AES-17 filter THD+N 60W, 90% 120W, single-channel driven, Class D stage 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 with optional clock synchronization

PDF Datasheet Preview

IRAUDAMP11
120W x 3 Channel Class D Audio Power Amplifier Using the IRS2053M and IRF6665

By Jun Honda, Liwei Zheng

CAUTION:

International Rectifier suggests the following guidelines for safe operation and handling of IRAUDAMP11 Demo board;
• Always wear safety glasses whenever operating Demo Board
• Avoid personal contact with exposed metal surfaces when operating Demo Board
• Turn off Demo Board when placing or removing measurement probes

IRAUDAMP11 REV

Page 1 of 35

TABLE OF CONTENTS

SPECIFICATIONS 3

CONNECTION SETUP 5

CONNECTOR DESCRIPTION 5

TEST 6

PERFORMANCE AND TEST GRAPHS 7

CLIPPING 10

SOFT 10

THERMAL CONSIDERATIONS 12

THERMAL INTERFACE MATERIAL’S PRESSURE CONTROL 13

POWER SUPPLY REJECTION RATIO 15

SHORT CIRCUIT PROTECTION RESPONSE 16

IRAUDAMP11 OVERVIEW 17

FUNCTIONAL 19

IRS2053 GATE DRIVER IC 19 SELF-OSCILLATING FREQUENCY 20 ADJUSTMENTS OF SELF-OSCILLATING 20 SELECTABLE 21

PROTECTION SYSTEM OVERVIEW 22

CLICK AND POP NOISE REDUCTION 24

BUS 24

INPUT SIGNAL AND GAIN SETTING 26

GAIN 26

IRAUDAMP11 FABRICATION 28

IRAUDAMP11 HARDWARE 31

IRAUDAMP11 PCB 32

IRAUDAMP11 REV

Page 2 of 35

Introduction

The IRAUDAMP11 Demo board is a reference design which uses only one IC IRS2053M to derive appropriate input signals, amplify the audio input, and achieve a three-channel 120 W/ch THD+N=1% half-bridge Class D audio power amplifier. The reference design demonstrates how to use the IRS2053M Class D audio controller and gate driver IC, implement protection circuits, and design an optimum PCB layout using IRF6665 DirectFET MOSFETs. The reference design contains all the required housekeeping power supplies for ease of use. The three-channel design is scalable, for power and number of channels.
• AV receivers
• Home theater systems
• Mini component stereos
• Powered speakers
• Sub-woofers
• Musical Instrument amplifiers
• Automotive after market amplifiers

Output Power:

Residual Noise Distortion Efficiency Multiple Protection Features:

PWM Modulator:
120W x 3 channels THD+N=1% or 170W x 3 channels THD+N=10%

IHF-A weighted, AES-17 filter THD+N 60W, 90% 120W, single-channel driven, Class D stage 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 with optional clock synchronization

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived IRAUDAMP11 Datasheet file may be downloaded here without warranties.

Datasheet ID: IRAUDAMP11 638321