At CES 2015, Toshiba America Electronic Components introduced its newest IC enabling wireless mobile device charging. The TC7765WBG wireless power receiver controller IC can manage the 12-W power transfer required for the wireless charging of tablet devices. The TC7765WBG is compatible with the Qi low-power specification version 1.1 defined by the Wireless Power Consortium (WPC). It delivers a user experience comparable to that of conventional wired charging for tablets, as well as smartphones and other portable devices.
The TC7765WBG was built with Toshiba’s mixed-signal process using a high-performance MOSFET design that maximizes power efficiency and thermal performance. The IC combines modulation and control circuitry with a rectifier power pickup, I2C interface, and circuit protection functions. Compliance with the “Foreign Object Detection” (FOD) aspect of the Qi specification prevents heating of any metal objects in the path of wireless power transfer between the receiver and the transmitter.
The 12-W TC7765WBG is designed in a compact WCSP-28 2.4 mm × 3.67 mm × 0.5 mm package. This further facilitates design-in and contributes to the new chipset’s backward compatibility with the lower-power receiver IC. Combining the TC7765WBG with a copper coil, charging IC, and peripheral components creates a wireless power receiver. Joining the receiver with a Qi-compliant wireless power transmitter containing a Toshiba wireless power transmitter IC (e.g., TB6865AFG Enhanced version) forms a complete wireless power charging solution.
Toshiba announced that samples of the TC7765WBG wireless power receiver IC will be available at the end of January, with mass production set to begin in Q2 2015.