TITAS5404－Q126W汽车四路D类放大器参考设计

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1、TITAS5404-QI26W汽车四路D类放大器参考设计时间：2016-02-2909:36:01作者：TI来源：中电网TI公司的TAS5404-Q1是用于汽车音响主机的四路D类音频放器,四路模拟输入，四路BTL输出，每路能从14.4V电源中向4欧姆负载连续提供26W输出或向2欧姆负载连续提供45W输出,THD+N小于1%,75dBPSRR.每路增益为12dB,20dB,26dB,32dB.本文介绍了TAS5404-Q1主要特性,框图和主要应用电路及其材料清单，汽车四路D类放人器参考设计TIDA-00573主要

2、特性，框图，电路图，材料清单和汽车咅响主机框图与主要指标.TheTAS5404・Q1deviceisafour-channelclass-Daudioamplifierdesignedforuseinautomotiveheadunits.TheTAS5404-Q1deviceprovidesfourchannelsat20Wcontinuouslyinto4Qatlessthan1%THD+Nfroma14.4-Vdcsupplywhenusedwiththeapplicationcircuit.Theinp

3、utisconfiguredasananalogsingle-endedinterface・ThepatentedPWMtopologyofthedeviceprovidesdramaticimprovementsinefficiencyandaudioperformaneeovertraditionallinearamplifiersolutions.Theimprovementinefficiencyandaudioperformaneereducesthepowerdissipatedbytheampli

4、fierbyafactoroftenundertypicalmusicplaybackconditions.ThedeviceincorporatesalltherequiredfunctionsrequiredbytheOEMapplication.Thebuilt-inloaddiagnoSticfunctionsfordetectinganddiagnosingdisconnectedspeakershelpreducetesttimeduringthemanufacturingprocess・TAS54

5、04-Q1主要特性：TAS5404-Q1一Single-EndedInputFour-ChannelClass-DPowerAmplifierFourAnalogInputs,FourBTLPowerOutputsTypicalOutputPowerat10%THD+N26W/Chlnto4Qat14.4V45W/Chlnto2Qat14.4VChannelsCanBeParalleled(PBTL)forHigh-CurrentApplicationsTHD+N<0.02%,1kH乙1WInto4QPaten

6、tedPop-and・Click・ReductionTechnologySoftMutingWithGainRampControlCommon-ModeRampingPatentedAMInterfereneeAvoidaneePatentedCycle-by-CycleCurrentLimit75dBPSRRFour-Addressl2CSerialInterfaceforDeviceConfigurationandControlChannelGains:12dB,20dB,26dB,32dBLoadDiag

7、nosticFunctions:OutputOpenandShortedLoadOutput-to-PowerandOutput-to-GroundShortsPatentedTweeterDetectionProtect!onandMonitoringFunctions:Short-CircuitProtectionLoad-DumpProtectionto50VFortuitousOpen-GroundandOpen-PowerTolerantPatentedOutputDCLevelDetectionWh

8、ileMusicPlayingOvertemperatureProtectionOvervoltageandUndervoltageConditionsClipDetection64-PinQFP(PHD)PowerPackageWithHeatSlugUpDesignedforAutomotiveEMCRequirementsQualifiedAccordingtoAEC-Q100I