Würth Elektronik eiSos and Infineon Technologies AG relesed a 200-watt development system for wireless power transfer. This kit is innovative for the link between the transmitter and receiver coils which can be used to transfer not only power but also data. The 760308EMP-WPT-200W development kit comprises a power supply, a transmitter unit and a receiver unit, and is a new and powerful solution thanks to the products from Würth Elektronik and Infineon (MOSFETS, drivers, microcontrollers, voltage regulators).
The transmitter side consists of a full bridge and a resonant circuit made up of the WPT coil and the resonant capacitors connected in series. Due to the phase shift between voltage and current in the resonant circuit, the system operates in zero voltage switching (ZVS) mode. The result is a very high level of efficiency for the overall system. Thanks to the AM modulation of the alternating field between transmitter and receiver, any data can be sent from the receiver side to the transmitter side.