IDT无线充电方案.pptx

IDT Wireless Power SolutionAnalog and Power DivisionAgendaWireless Power OverviewWhy Wireless Power?Alternative to Carrying Bulky Chargers for Laptops, Mobile Phones, Tablets, e-Readers, and Media PlayersSimply Place Device on Charging MatEliminate Cords and Wires230 Million Electronic Devices Forecast to Use Wireless Charging by 2014 (iSuppli)Samsung, Motorola, LG, HTC, Fujitsu, NEC and Sharp?All Have Qi-Compatible Mobile PhonesPotential Wireless Charging for iPhone 5An Apple patent indicates the company could be readying a wireless charging system that would be built into its iMac computers to charge nearby /tag/wireless-devices/wireless devices, such as a keyboard, mouse, and iPhones containing the appropriate receiversSource: iSuppli Corp (June 2010)/Mobile-and-Wireless-Communications/News/Pages/Wireless-Charging-Market-Set-to-Expand-by-Factor-of-Nearly-70-by-2014.aspx/Mobile-and-Wireless-Communications/News/Pages/Wireless-Charging-Market-Set-to-Expand-by-Factor-of-Nearly-70-by-2014.aspx Industry-Accepted StandardizationStandardization Increases Consumer Confidence and DemandQi “气” (Chee: “Vital Energy” in Asian Philosophy - An Intangible Flow of Power无形的能量)Industry Standard Developed by Wireless Power Consortium (WPC)Rapid Industry-Wide Adoption (100+ Members by Oct. 2011)Wide Range of ApplicationsWide Range of LocationsWide Range of Mobile DevicesMobile Phone TabletCameraMP3 Player MID, …Battery charging, or other suitable loadsOfficeResidential (bedroom, kitchen, family area, bathroom…)HotelsCoffee ShopsPublic Waiting AreasEducational (schools, universities, libraries….)AirportsAircraft SeatsMedicalAutomotiveTheatersRestaurantsApplication Solution ExamplesTechnology Overview and System OperationWireless Power Transfer Power Transfer via Magnetic Induction at Short Distances (mm) Transmitter (Tx) and Receiver (Rx) Coils are Magnetically Coupled Inductors AC current in Tx coil generates magnetic field, which induces a voltage in Rx coil. Rx voltage may be