LM48580 High Efficiency Class H, High Voltage, …

1 Copyright 2018, Texas Instruments IncorporatedOUTPUT STAGEVDDVAMPIN+IN-SGNDOUT+OUT-+ to + CONVERTERGAIN PH1 PF10 PFCINCINP roductFolderOrderNowTechnicalDocumentsTo ols &SoftwareSupport &CommunityAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand FEBRUARY2010 REVISEDFEBRUARY2018LM48580 Boomer AudioPowerAmplifierSeriesHigh EfficiencyClass H, High Voltage, HapticPiezo Actuator/ CeramicSpeakerDriver11 Features1 ClassH Driver IntegratedBoostConverter Bridge-tiedLoadOutput DifferentialInput ThreePin-ProgrammableGains Low SupplyCurrent MinimumExternalcomponents Micro-PowerShutdown ThermalOverloadProtection Availablein Space-Saving12-bumpDSBGAP ackage2 Applications TouchScreenSmartPhones TabletPCs PortableElectronicDevices MP3 Players Key Specifications.

2 OutputVoltageat VDD= V,RL= 6 F + 10 , THD+N 1% 30 VP-P(Typical) QuiescentPowerSupplyCurrentat V mA (Typical) PowerDissipationat 25 VP-P 800 mW (Typical) ShutdownCurrent A (Typical)3 DescriptionThe LM48580is a fully differential,high voltagedriverfor piezoactuatorsand ceramicspeakersfor TI s Powerwise productline, the LM48580 ClassH architectureofferssignificantpowersaving scomparedto traditionalClassAB VP-Poutputdrivewhileconsumingjust15 a singlesupplydriverwithanintegratedboostc onverterwhichallowsthe devicetodeliver30 VP-Pfroma V lowpowerShutdownmodethatreducesquiescent currentconsumptionto LM48580is availablein an (1)PARTNUMBERPACKAGEBODYSIZE(NOM) x (1) For all availablepackages,see the orderableaddendumatthe end of the FEBRUARY2010 : LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand ElectricalCharacteristics:VDD= Applicationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE.

3 Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (May2013)to RevisionBPage AddedDeviceInformationtable,ESDtable,The rmalInformationtable,ParameterMeasuremen tInformation,FeatureDescription,DeviceFu nctionalModes,PowerSupplyRecommendations ,Layoutsection,DeviceandDocumentationSup port, andMechanical,Packaging, (February2010)to RevisionAPage Changedlayoutof NationalDataSheetto TI +IN-PGNDSGNDSHDNSWABCDOUT-GAINOUT+ FEBRUARY2010 REVISEDFEBRUARY2018 ProductFolderLinks: LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporated5 Pin Configurationand FunctionsDSBGAP ackageYZR12-PinTop ViewYZR0012 Package(BumpsUp) ViewPin FunctionsBumpNameDescriptionA1 OUT+AmplifierNon-InvertingOutputA2 SGNDA mplifierGroundA3IN+AmplifierNon-Invertin gInputB1 OUT-AmplifierInvertingOutputB2 GAINGainSelect:GAIN= float:AV= 18dBGAIN= GND:AV= 24dBGAIN= VDD: AV= VBSTC2 SHDNA ctiveLow to VDDfor FEBRUARY2010.

4 LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporated(1)Stre ssesbeyondthoselistedunderAbsoluteMaximu mRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions. Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)If Military/Aerospacespecifieddevicesare required,pleasecontactthe TexasInstrumentsSalesOffice/Distributors for Specifications7 AbsoluteMaximumRatingsoveroperatingfree- airtemperaturerange(unlessotherwisenoted )(1)(2)MINMAXUNITS upplyVoltage6 VSW Voltage25 VVBSTV oltage21 VVAMP17 VInputVoltage + ,Tstg 65150 CJunctionTemperature150 C(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.

5 (2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a ESDR atingsVALUEUNITV(ESD)Electrostaticdischa rgeHuman-bodymodel(HBM),per ANSI/ESDA/JEDECJS-001(1) 2000 VCharged-devicemodel(CDM),per JEDEC specificationJESD22-C101(2) 7509 RecommendedOperatingConditionsoveroperat ingfree-airtemperaturerange(unlessotherw isenoted)MINNOMMAXUNITT emperatureRange 40TA85 (1)For moreinformationabouttraditionaland new thermalmetrics,see ThermalInformationTHERMALMETRIC(1)LM4858 0 UNITYZR(DSBGA)12 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom)thermalre sistancen/a FEBRUARY2010 REVISEDFEBRUARY2018 ProductFolderLinks: LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporated(1)TheE lectricalCharacteristicstableslist ensuredspecificationsunderthe listedRecommendedOperatingConditionsexce ptasotherwisemodifiedor specifiedby estimationsonly andare not ensured.

6 (2)Datasheetmin/maxspecificationlimitsar e specifiedby design,test, or statisticalanalysis.(3)Typicalvaluesrepr esentmostlikelyparametricnormsat TA= +25 C, and at theRecommendedOperationConditionsat the time ofproductcharacterizationand are not ElectricalCharacteristics:VDD= V(1)The followingspecificationsapplyfor RL= 6 F + 10 , CBST= 1 F, CIN= F, AV= 24 dB TA= 25 (2)Typ(3)Max(2) ,VIN= 0V, RL= VDD= 3V3mAPDP owerConsumptionVOUT= 25P-P, f = 200 HzVDD= V63360mVAVGainGAIN= RINGainInputResistanceto GND575k to VDD131k VINM aximumInputVoltageRangeAV= 18dB3VP-PVOUTO utputVoltagef = 200 Hz, THD+N= 1%VDD= 3 = 2 kHz,THD+N= 5%VDD= V11VP-PVDD= 3 +NTotalHarmonicDistortion+ NoiseVOUT= 25VP-P, f = V + 200 mVp-psine,InputsAC GNDfRIPPLE= 217 Hz,75dBfRIPPLE= 1 kHz71dBCMRRC ommonModeRejectionRatioVCM= 200mVP-PsinefRIPPLE= 217 Hz56dBfRIPPLE= 1 VOLTAGE (VP-P)THD+N (%)f = 2 kHzf = 200 VOLTAGE (VP-P)THD+N (%)f = 2 kHzf = 200 (Hz)OUTPUT VOLTAGE (VP-P) (Hz)

7 OUTPUT VOLTAGE (VP-P) (Hz)THD+N (%) (Hz)THD+N (%)6LM48580 SNAS491B FEBRUARY2010 : LM48580 SubmitDocumentationFeedbackCopyright 2010 2018, VVOUT= 9 VP-PRL= 6 F + 10 Figure1. THD+Nvs FrequencyVDD= VVOUT= 10 VP-PRL= 6 F + 10 Figure2. THD+Nvs FrequencyVDD= VTHD+N= 5%RL= 6 F + 10 Figure3. OutputVoltagevs FrequencyVDD= VTHD+N= 5%RL= 6 F + 10 Figure4. OutputVoltagevs FrequencyVDD= VRL= 6 F + 10 Figure5. THD+Nvs OutputVoltageVDD= VRL= 6 F + 10 Figure6. THD+Nvs OutputVoltage-90-80-70-60-50-40-30-20-10 010100100010000100000 FREQUENCY (Hz)PSRR (dB)-90-80-70-60-50-40-30-20-10010100100 010000100000 FREQUENCY (Hz)PSRR (dB) VOLTAGE (V)OUTPUT VOLTAGE (VP-P)0500100015002000250030000510152025 3035 OUTPUT VOLTAGE (VP-P)POWER DISSIPATION (mW)f = 2 kHzf = 200 Hz0500100015002000250005101520253035 OUTPUT VOLTAGE (VP-P)POWER DISSIPATION (mW)f = 2 kHzf = 200 FEBRUARY2010 REVISEDFEBRUARY2018 ProductFolderLinks: LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporatedTypical PerformanceCharacteristics(continued)VDD = VRL= 6 F + 10 Figure7.

8 PowerConsumptionvs OutputVoltageVDD= VRL= 6 F + 10 Figure8. PowerConsumptionvs OutputVoltageRL= 6 F + 10 ,f = 200 HzFigure9. OutputVoltagevs SupplyVoltageVDD= Vf = 200 HzRL= 6 F + 10 ,VRIPPLE= 200 mVP-PFigure10. PSRRvs FrequencyVDD= VVCM= 1 VP-PRL= 6 F + 10 Figure11. CMRRvs FrequencyCopyright 2018, Texas Instruments Incorporated+-DUTZLANALYZERVDD200 mVp-pVDDIN+IN-Copyright 2018, Texas Instruments IncorporatedDUTZLANALYZER200 mVp-pVDDIN+IN-+-VDD8LM48580 SNAS491B FEBRUARY2010 : LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporated12 ParameterMeasurementInformationFigure12. PSRRTestCircuitFigure13. CMRRTestCircuitCopyright 2018, Texas Instruments IncorporatedOUTPUT STAGEVDDVAMPIN+IN-SGNDOUT+OUT-+ to + CONVERTERGAIN PH1 PF10 FEBRUARY2010 REVISEDFEBRUARY2018 ProductFolderLinks.

9 LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporated13 LM48580is a fully differential,ClassH ceramicelementdriverfor ceramicspeakersand integrated,highefficiencyboostconverterd ynamicallyadjuststhe amplifier s supplyvoltagebasedon theoutputsignal,increasingheadroomand improvingefficiencycomparedto a conventionalClassAB differentialamplifiertakesadvantageof the increasedheadroomand bridge-tiedload(BTL)architecture,deliver ingsignificantlymorevoltagethana OperationClassH is a modificationof anotheramplifierclass(typicallyClassB or ClassAB) to decreasepowerdissipation,ClassH usesa trackingpowersupplythat monitorsthe outputsignaland adjuststhe amplifieroutputis below3 VP-P, the nominalboostvoltageis 6 V.

10 As the amplifieroutputincreasesabove3 VP-P, the boostvoltagetracksthe amplifieroutputas shownin Figure14. Whenthe amplifieroutputfalls below3 VP-P, the boostconverterreturnsto its greatlyreducedcomparedto conventionalClassAB ClassH Operation10LM48580 SNAS491B FEBRUARY2010 : LM48580 SubmitDocumentationFeedbackCopyright 2010 2018,TexasInstrumentsIncorporatedFeature Description(continued) PiezoelectricElementsPiezoelectricelemen tssuchas ceramicspeakersor piezoelectrichapticactuatorsare capacitivein theircapacitivenature,piezoelectriceleme ntsappearas low impedanceloadsat highfrequencies(typicallyabove5 kHz).A resistorin serieswith the piezoelectricelementis requiredto ensurethe amplifierdoesnot seea shortat high valueof the seriesresistordependson the capacitanceof the element,the frequencycontentof the outputsignal,andthe highfrequencies,but also impactsthe suitedfor use with hapticactuators,wherethe majorityof the signalcontentis typicallybelow2 ,lowervaluedresistorsmaximizefrequencyre sponse,whileincreasingpowerdissipationat idealfor ceramicspeakerapplications,wherehighfreq uencyaudiocontentneedsto be typicallybetween10 and 20.