It features support for data transmission as well as wireless power.
Consists of a power supply, transmitter unit, and receiver unit

Würth Elektronik eiSos and Infineon Technologies AG announced the availability of a 200-watt development system for wireless power transfer (WPT), the 760308EMP-WPT-200W. The development kit features the ability to transfer not only power but also data via the link between the transmitter and receiver coils.

The 760308EMP-WPT-200W development kit, consisting of a power supply, transmitter unit, and receiver unit, is an innovative solution that utilizes products from Würth Elektronik and Infineon.

The transmitter side consists of a resonant circuit consisting of a WPT coil and a series-connected resonant capacitor and a full bridge circuit. Due to the phase shift between voltage and current in the resonant circuit, the system operates in zero voltage switching (ZVS) mode. As a result, the entire system achieves high efficiency.

The receiver side consists of a synchronous rectifier and a lower filter and sieving. By AM modulating the alternating magnetic field between the transmitter and receiver, any data can be transmitted from the receiver side to the transmitter side. For example, sensor data can be sent to the base station while charging a mobile device. All the data needed to implement this type of system is available for free download.



Suitable for medical devices and IoT
“The circuit is scalable from 10 watts up to several kilowatts. Since the current through the resonant circuit is sinusoidal, excellent EMC is achieved. By changing the switching frequency, the output voltage can be adjusted and data can be transferred from the receiver to the transmitter,” says Semsom, head of wireless power transmission at Würth Elektronik eiSos. “The development system is intended for applications with output powers exceeding the Qi standard by up to 200 watts, including medical equipment, Industry 4.0 and the IoT. All of these areas operate under harsh environmental conditions.”

“Infineon offers a wide range of semiconductor components to enable the development of efficient and innovative wireless power solutions,” said Verena Lackner, Head of Global Application Marketing for Wireless Charging at Infineon. “Wireless charging is one of our key priorities and by offering this development system together with Würth Elektronik, we can effectively support our customers in their diverse design challenges.”