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Toshiba unveils Qi-compliant charging chipset

Posted: 13 Dec 2012 ?? ?Print Version ?Bookmark and Share

Keywords:wireless charging chipset? WPC? Qi?

Toshiba America Electronic Components Inc. has introduced its free positioning wireless charging chipset that includes a high-efficiency power transmitter and receiver. According to the company, the device is geared for charging smartphones and other mobile products anywhere on the battery charging pad.

The Toshiba chipset is fully compliant with the Wireless Power Consortium Qi interface specification, A4, A8, A12 and A14. It includes the TB6865FG power transmitter and TB6860WBG receiver and features a two-coil control architecture for cost-effective battery charging. The position of a mobile device is detected by the TB6865FG and only one of the coils is energized for charging, thereby preserving efficiency and allowing product freedom of placement. As a result, end users can place a Qi-capable mobile product on a Qi-compliant charging surface and achieve up to 74 percent efficiency across a majority of the charging area. In addition, the design flexibility of the TB6865FG allows the control of two coils, so two mobile products can be charged simultaneously, indicated the company.

Toshiba chipset

Toshiba chipset. Device is geared for charging smartphones and other mobile products anywhere on the battery charging pad.

Toshiba's chipset is built with the company's MCU and analog IC technology and features high levels of integration to reduce component count, board space and cost in wireless�charging applications, the firm stated. The TB6865FG transmitter integrates both MCU and analog elements including PWM circuitry, switching control, on-board filter and a pre-driver circuit. The TB6860WBG receiver combines modulation and control circuitry with a rectifier power pickup, built-in high-performance DC/DC buck converter and protection functions.

The TB6860WBG offers a programmable charging profile via I2C control. The latter provides an integrated DC/DC converter for high-efficiency, high-current charging with a charge current of up to 1.2A. Integrated protection for the receiver IC covers input voltage, output current and over-temperature conditions.

The TB6865FG is supplied in a LQFP100 14 x 14mm package while the TB6860WBG is supplied as a WCSP39 4.25 x 2.65mm device.

The Toshiba power transmitter and receiver chipset, TB6865FG and TB6860WBG, for free positioning wireless charging will begin sampling in 1Q13. Pricing for the TB6865FG is $5 and the TB6860WBG is priced at $3.

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