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TI details the wireless power chip in the Lumia 920, offers four times the charging area
If you're one of the first on your block to have picked up a Nokia Lumia 920, you might wonder why it's so forgiving with where you set it down on the wireless charging pad. TI is more than willing to share. The 920, 820, Fatboy charging pillow and JBL PowerUp speaker all use a new TI bq500410A controller whose support for new transmitters gives it a charging area four times larger than we're used to. The 2.76 by 0.79 inches of coverage might not sound like much, but it's much wider than the previous 0.71 square inches while preserving a 70 percent efficiency and a safety cutoff if something gets in between. As a companion, there's a bq51050B chip launching at the same time that represents the first Qi receiver with its own built-in battery charger, which TI claims can charge more quickly and in less space than its rivals. Anyone embracing Nokia's vision of Windows Phone 8 can get their hands on devices using the wireless power chips today; we're only left hoping that TI's official news means other phone makers can tag along.
Texas Instruments ups the wireless power game with industry's first Qi dev kit
We have yet to see a flood of Qi-enabled devices at CES, but here's a little something from Texas Instruments that will hopefully boost the number of products supporting this newfangled wireless charging standard. What we're looking at is the bqTESLA, the industry's first Qi-certified wireless power development kit that consists of a single-channel transmitter (presumably the transparent pad with a copper coil underneath), a direct-charge receiver (the black object) and "associated magnetics for applications requiring five watts of power or less" such as cellphones, MP3 players, cameras, etc. Interested techies can pick up one of these toys for $499, or for just $250 throughout CES 2011.
