Wireless power development system
16 May 2018
Power Electronics / Power Management
Telecoms, Datacoms, Wireless, IoT
Under the name 760308EMP-WPT-200W, Würth Elektronik eiSos and Infineon Technologies 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.
Expected to be available from the third quarter of 2018, the development kit comprises a power supply, a transmitter unit and a receiver unit. 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.
According to Cem Som, division manager for wireless power transfer at Würth Elektronik eiSos, “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 favours 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.”
For more information contact Jason Page, Würth Elektronik eiSos, +27 (0)71 259 9381, [email protected], www.we-online.com
Further reading:
Powering the IoT
Uniross Batteries
Power Electronics / Power Management
Choosing the right battery is not simply a technical detail, but a defining factor in the longevity and cost-effectiveness of any IoT deployment.
Read more...
The move to DC infrastructure
IOT Electronics
Power Electronics / Power Management
The shift toward direct current infrastructure in data centres is accelerating as operators pursue higher efficiency, improved reliability, and stronger alignment with renewable energy goals.
Read more...
Power inductor for automotive applications
Würth Elektronik eiSos
Power Electronics / Power Management
The WE-MXGA inductor features RDC values up to 25% lower and a saturation current up to 47% higher compared to other components currently available on the market.
Read more...
High-performance DC-DC converter
Conical Technologies
Power Electronics / Power Management
With a wide 9 - 40 V DC input range, the Claf Power DWHB400-F24xxN series is a high-performance DC-DC converter family ideally suited for 12 V and 24 V battery-based systems including vehicles, off-grid installations, and distributed power architectures.
Read more...
DC-DC converters for next-generation IoT
iCorp Technologies
Power Electronics / Power Management
AIPUPOWER’s K78XXJT-500R3 and K78XXJT-500R3-LB give designers a compact, high-efficiency power option for battery-powered and space-constrained systems, combining up to 96% efficiency with no-load input current as low as 0,2 mA.
Read more...
240 W in compact form factor
Brabek
Power Electronics / Power Management
The cost-effective and reliable RECOM RACPRO1-S240E DIN-rail mount AC-DC series is only 125 x 139 mm and 39 mm wide, yet provides 240 W output.
Read more...
You cannot manage what you cannot measure
Power Electronics / Power Management
South African sites are generating solar energy. Most still have no idea what is consuming it… or when, or why. Intelligent load management hardware is changing that.
Read more...
Scalable and intelligent power solution
Power Electronics / Power Management
Designed for Africa’s rapidly evolving energy landscape, Bluetti’s ES125 offers a scalable, intelligent power solution that delivers reliable and cost-efficient electricity for uninterrupted operations.
Read more...
Simulating grid abnormalities
Conical Technologies
Power Electronics / Power Management
Simulating grid abnormalities has become an essential part of validating systems such as inverters, UPS units, photovoltaic inverters, and EV charging infrastructure.
Read more...
Evaluation board for STPMIC25 PMIC
Power Electronics / Power Management
The STEVAL-PMIC25V1 is a power management IC evaluation board for the highly integrated STPMIC25, which is designed to manage the power requirements of the core, memory, and interfaces of the STM32MP2x series MPU.
Read more...
printer friendly version