New 200-watt development system: Combining wireless power and data transmission

Munich and Waldenburg, Germany – 19 March 2018 – Under the name 760308EMP-WPT-200W, Würth Elektronik eiSos and Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) 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, 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.

For example, for medical technology and IoT

Cem Som, Division Manager Wireless Power Transfer at Würth Elektronik eiSos, explained: “Customers have been asking us for years how they can operate their applications with power ratings that exceed the Qi standard. The circuit can be scaled from 10 watts to several kilowatts. The currents through the resonant circuit are sinusoidal, which favors the excellent EMC properties. Changing the switching frequency allows the output voltage to be altered and data to be transmitted from the receiver to the transmitter. We want to address applications with an output of 200 watts outside the Qi standard. These are typically applications in the fields of medical technology, Industry 4.0, IoT, and all areas with harsh environmental conditions.”

To address the different requirements of wireless power transmission, semiconductor components from Infineon offer ideal added value. “Thanks to our broad product portfolio, we are able as a leading semiconductor manufacturer to play a major role in the development of efficient and innovative wireless power solutions,” said Verena Lackner, Global Application Marketing for Wireless Charging at Infineon. “Wireless charging is a key topic for Infineon, and together with Würth Elektronik we can use this system solution to effectively support customers in various design challenges.

Availability

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

About Würth Elektronik eiSos GmbH & Co. KG

Würth Elektronik eiSos GmbH & Co. KG is a manufacturer of electronic and electromechanical components for the electronics industry. Manufacturing facilities in Europe, Asia and North America ensure delivery to a customer base that is growing worldwide. The product range covers EMC components, inductors, transformers, HF components, varistors, capacitors, power modules, LEDs, connectors, power elements, wireless power coils, switches, assembly technology and fuse holders. Together with its specialized sister company, Würth Elektronik eiSos GmbH & Co. KG forms the Würth Elektronik eiSos Group.

About the Würth Elektronik eiSos Group

Würth Elektronik eiSos GmbH & Co. KG (Focus: standard components), Würth Elektronik iBE GmbH (Focus: customized passive components for the automotive industry), Wurth Electronics Midcom Inc. (Focus: customized inductive components), Würth Elektronik Stelvio Kontek S.p.A. (Focus: customized plug connectors), AMBER wireless GmbH (Focus: wireless data transmission solutions) and IQD Frequency Products Ltd (Focus: frequency-control components) form the Würth Elektronik eiSos Group. The company employs 6,700 people and generated sales of almost 653 million euros in 2017. The Würth Elektronik eiSos Group is one of Europe’s largest manufacturers of passive components and active in 50 countries.

The company’s innovative power in the field of e-mobility is reflected in its technology partnership with the Formula E team Audi Sport ABT Schaeffler and its support for the Formula E racing series (www.we-speed-up-the-future.com). It also addresses other global growth markets, such as energy harvesting, the Internet of Things and wireless communication, with innovative products.

The Würth Elektronik eiSos Group is part of the Würth Group, the world market leader for assembly and fastening technology.

For more information, see www.we-online.de

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