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IRIRS20921700W单路D类音频功率放大方案2012-10-3022:37:47|分类：默认分类|字号订阅IR公司的IRS2092是集成了PWM调制器和保护的高压高性能D类音频放大器，工作频率高达800kHz，±100V额定电压是可提供500W输出功率，主要用在家庭影院，密你立体声系统，通用音频放大器等。本文介绍IRS2092主要特性，方框图，典型连接图，典型应用电路图以及1700W单路D类音频功率放大器框图，主要特性，电路图和材料清单。TheIRS2092isahighvoltage,highperformanceClassDaudioamplifierdriverwithPWMmodulatorandprotection.InconjunctionwithtwoexternalMOSFETandafewexternalcomponents,acompleteClassDaudioamplifierwithprotectioncanberealized.InternationalRectifier’sproprietarynoiseisolationtechnologyallowshighcurrentgatedrivestageandhighspeedlownoiseerroramplifierresideonasinglesmallsilicondie.OpenelementsofPWMmodulatorsectionallowflexiblePWMtopologyimplementation.IRS2092主要特性：?IntegratedanaloginputClassDaudioamplifierdriverinasmall16pinpackage?Floatinginputsenableeasyhalfbridgeimplementation?Programmablebidirectionalover-currentprotectionwithself-resetfunction?ProgrammablepresetdeadtimeforimprovedTHDperformances?Startandstopclicknoisereduction?Highnoiseimmunity?±100Vratingsdeliverupto500Winoutputpower?Operatesupto800kHz?RoHScompliantIRS2092典型应用：?Hometheatersystems?Minicomponentstereosystems?Poweredspeakersystems?Generalpurposeaudiopoweramplifiers图1。IRS2092方框图图2。IRS2092典型连接图图3。IRS2092典型应用电路图1700W单路D类音频功率放大器IRAUDAMP9：1.7kW/2-ΩSingleChannelClassDAudioPowerAmplifierUsingtheIRS2092SandIRFB4227TheIRAUDAMP9referencedesignisasingle-channel1.7-kW(@2Ωload)half-bridgeClassDaudiopoweramplifier.ThisreferencedesigndemonstrateshowtousetheIRS2092SClassDaudiocontrollerandexternalgatebuffer,toimplementprotectioncircuits,anddesignanoptimumPCBlayoutusingtheIRFB4227(x2Pairs)TO-220MOSFETs.Thisreferencedesignmayrequireadditionalheatsinkorfanfornormaloperation(one-eighthofcontinuousratedpower).Thereferencedesignprovidesalltherequiredhousekeepingpowersuppliesforeaseofuse.The1-channeldesigniscapableofdeliveringhigherthanitsratedpowerwithprovisionoflargerheatsink(Rth2°C/W).1700W单路D类音频功率放大器主要应用：?Pro-Audioamplifiers?Poweredspeakers?ActiveSub-woofers?P.A.Systems?CaraudioamplifiersMusicalInstrumentamplifier1700W单路D类音频功率放大器主要特性：OutputPower:1.7kWSinglechannel(2Ωload,1kHz,THD+N=10%),ResidualNoise:290μV,IHF-Aweighted,AES-17filterDistortion:0.07%THD+N@600W,2ΩEfficiency:97%@1.7kW,2ΩMultipleProtectionFeatures:OutputOver-currentprotection(OCP),highsideandlowsideInputOver-voltageprotection(OVP),InputUnder-voltageprotection(UVP),OutputDC-offsetprotection(DCP),Over-temperatureprotection(OTP)PWMModulator:Self-oscillatinghalf-bridgetopologywithoptionalclocksynchronization图4。1700W单路D类音频功率放大器功能方框图图5。1700W单路D类音频功率放大器外形图图5。IRS2092S保护电路功能框图图6。1700W单路D类音频功率放大器测试图图7。1700W单路D类音频功率放大器电路框图图8。1700W单路D类音频功率放大器电路图（1）图9。1700W单路D类音频功率放大器主板输入/输出电源连接图图10。1700W单路D类音频功率放大器主板电路图（1）图9。1700W单路D类音频功率放大器子板电路图