Fast wireless charging enabled by 5-Watt chipset

January 08, 2014 // By Graham Prophet
Toshiba Electronics uprated its TB6865FG power transmitter and TC7763WBG receiver chipset enabling faster wireless charging of mobile devices. The wireless power chipset now supports 5W power transfer and is compatible with the Qi Standard Low Power Specifications version 1.1. Features include a rigorous Foreign Object Detection (FOD) function and an integrated digital logic controller that reduces component count and minimises design complexity.

Built in Toshiba’s mixed-signal process with optimised MOSFETs the chipset achieves high-efficiency wireless charging performance. The TB6865FG integrates an MCU that can drive four external MOSFET H-bridges of four coils for a free positioning architecture supporting two mobile devices. The TC7763WBG receiver combines modulation and control circuitry with a rectifier power pickup, built-in low-dropout linear regulator (LDO) and circuit protection functions. The transmitter IC is housed in LQFP-100 14 x 14 mm package and the receiver IC is supplied in a WCSP-28 2.4 x 3.67 x 0.5 mm package.

The recently announced TC7761WBG IC has been awarded Qi certification for an output power of 3.5 Watt.

Toshiba Electronics Europe;