基于QI标准的TI无线充电方案

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1、TIWirelessCharging–TotalSolutionusingtheQi-StandardTIInformation-SelectiveDisclosure1ThePowerofQiTIInformation-SelectiveDisclosureWirelessPowerConsortium(WPC)ProprietarySolutionsInteroperabilitykeytoadoptionWPCBroadIndustrySupportIndustrywidestandardfordeliv

2、eringwirelesspowerupto5WAimedtoenableinteroperabilitybetweenvariouschargingpadsandportabledevicesStandardcontinuestogaintractionwithincreasinglistofmembers(140)CompatibledeviceswillbemarkedwithaQilogoandmore…TIInformation-SelectiveDisclosure3YourQiphonecan

3、chargeeverywhere–noemptybatteryTIInformation-SelectiveDisclosure4CoolPhonesEquippedwithQiDroidDNA,HTCGoogleNexus4NokiaLumia920HTC8XLGSpectrum2TIsolutionresidesin70%oftheQi-phonesintheWWmarketTIInformation-SelectiveDisclosure5ExponentialGrowthofCertifiedQi-pro

4、ductsTIInformation-SelectiveDisclosureTechnologiesinWirelessPowerTIInformation-SelectiveDisclosureTechnologiesInvolvedinWirelessPower•InductiveCoupling:–Coil(transmitter)toCoil(receiver)transferofpowerthroughamagneticfield•MagneticResonance:–Magneticresonance

5、isanotherembodimentofinductivecoupling,withtransmitterandreceivercoils.–Needsantennas(orresonators)toshapethemagneticfieldtotravelgreaterdistances–Increasesspatialfreedom,addscostsandcomplexity,decreasesefficiencyTIInformation-SelectiveDisclosureInductivePowe

6、rSystemOverviewPowerLoadVoltageACtoDCDriversRectificationorConditioningBatteryCommunicationCommunicationV/IandControlControllerSenseTX,TransmitterRX,Receiver•Powertransmittedthroughsharedmagneticfield–TransmitcoilcreatesmagneticfielddB/dt–Receivecoilinproximi

7、tyconvertsfieldintovoltage–ShieldingmaterialoneachsidedirectsfieldRXCoil•PowertransferredonlywhenneededI–Transmitterwaitsuntilitsfieldhasbeenperturbedz

8、ansferredonlyatlevelneeded–ReceiverconstantlymonitorspowerreceivedanddeliveredD–Transmitteradjustspowersentbasedonreceiverfeedback–Iffeedbackislost,powertransferstopsTIInformation-Selecti