10/05/2012

RRC power solutions GmbH

New Qi Wireless Power Modules from RRC

Plug and Play 5 W transmitter- and receiver unit
RRC power solutions announced two new 5 watt modules for contactless power and data transmission through inductive proximity coupling.

The modules are plug & play ready, and are compatible with the Qi standard of the Wireless Power Consortium (WPC). The module design – consisting of independent transmitter (Tx) and receiver (Rx) boards – can be incorporated into a multitude of different devices utilizing wireless power, with no need for external electrical contacts.

On both modules the inductive coils are applied directly to the boards in addition to the electronic components. An optimized electronic design results in extremely small dimensions. The height of the receiver module is 3.2 mm. However, a separation of the coil from the rest of the circuit board is possible.

The modules have several safety features including foreign object detection. Continuous data transfer via I²C interface from the receiver to the transmitter allows the sharing of status information. The transmitter module supplies 19 VDC at max. 0.4 A.

The receiver module provides up to 5 W output power and an unregulated 6-7 VDC output voltage, which can also be adjusted to a customer's application. The coils are designed for near field use, with a distance of 3 to 10 mm. The transmitter board uses a coil based on the WPC’s A10 standard.

Another solution available is a 5 Watt transmitter module utilizing WPC’s A6 coil design. The three transmitter coils are placed on the back side of the board. The advantage that the A6 coil provides is a larger "landing zone" for the receiver module and the automatic detection of the optimal transmitter coil for power transmission.

This A6 module is also designed to meet the Qi-standard and has an input voltage of 6 to 16 VDC at an input current of max. 1.2 A. The A6 design also has the same safety functions, including foreign object detection and data communication via I²C.

First applications for these modules are expected to be utilized in laboratory facility, table top solutions and car center consoles.