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:
What is Wi-Fi HaLow and why choose it for IoT?
iCorp Technologies
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Wi-Fi HaLow introduces a low power connectivity option that, in contrast to other Wi-Fi options, offers greater range of approximately 1 km, which opens up a raft of IoT use cases.
Read more...
3-terminal filters for automotive applications
RS South Africa
Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.
Read more...
Simple battery charger ICs for any chemistry
Altron Arrow
Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.
Read more...
Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.
Read more...
Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.
Read more...
The evolution of power management in electronics
TRX Electronics
Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.
Read more...
Power and precision in a compact package
Conical Technologies
Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.
Read more...
Robust PoE module
CST Electronics
Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.
Read more...
Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.
Read more...
Transformer protection is a critical safeguard for municipal power stability
Power Electronics / Power Management
Transformer protection is not just a technical requirement; it is a vital component in ensuring the resilience and operational integrity of South Africa’s municipal power infrastructure.
Read more...
printer friendly version