Stefan Mileschin

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.

http://www.engadget.com/2012/11/07/t...the-lumia-920/