Würth and Infineon present wireless power development system 200-W-WPT

Under the name 760308EMP-WPT-200W, Würth Elektronik and Infineon are offering a 200-watt development system for wireless power transfer. What makes the development kit special is that the link between the transmitter and receiver coils 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 an innovative 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.

On the receiver side, there is a synchronous rectifier with downstream filtering and sieving. 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. A sample application would be a mobile device that sends sensor data to a base station during the charging process. All the data needed to implement this kind of proprietary system is offered for free download.

The 200-W-WPT will be available from the third quarter of this year.


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