Receiver reduces power loss by as much as 50%

28th February 2014

Staff Reporter

0 0

Supporting both WPC Qi 1.1 and PMA specifications, the bq51221 is a 5W wireless power receiver from Texas Instruments. The company claims that the device is the industry’s smallest, most efficient wireless power receiver to support both WPC and PMA specifications, with TI further claiming the device reduces power loss by as much as 50% when compared to existing receiver solutions.

The inductor-less, 5W receiver’s high efficiency and programmable output allows consumers to efficiently and quickly charge their mobile phones, headsets and power banks from a Qi or PMA charging station.

Features and benefits of the device include:

Dual-mode, 5-watt receiver: Compliant with Qi 1.1 and PMA communication and control.
High efficiency for fast charge time: Achieves up to 96 percent power efficiency, and the device’s adjustable output voltage helps reduce power loss by as much as 50 percent.
Industry’s smallest, thinnest solution: 3.6-mm by 2.9-mm by 0.5-mm single-chip wireless power receiver achieves a solution size of 75 mm² without the need for an inductor.

In addition to the dual-mode receiver, TI also introduced its bq51010B next-generation Qi 1.1-compliant receiver with an integrated 7-V regulated supply and foreign object detection. The single-chip receiver, also shipping in volume production, achieves 93 percent power efficiency and ensures the lowest possible power dissipation when charging a Qi-compliant smartphone.

TI’s wireless power management products and support enable innovative, efficient wireless charging capabilities for smartphones, tablets and other portable electronics, and wireless power charging transmitters ranging from stand-alone charging pads to those embedded in cars and furniture. The company offers the most extensive portfolio of power integrated circuits that support WPC’s Qi standard. TI also is a member of the Alliance for Wireless Power (A4WP) and PMA.

The new bq51221 and bq51010B wireless power receivers are available now in volume production to customers worldwide. The bq51221 dual-mode receiver comes in a 42-pin, 3.6-mm by 2.9-mm by 0.5-mm package at a suggested resale price of US$3.00 each in 1,000-unit quantities. Qi-only versions of the bq51221 are currently sampling to select customers, and are expected to be available in volume production in the second quarter. Designers can order the new bq51221EVM-520 evaluation module to get started on dual-mode wireless power receiver designs. The bq51010B comes in a 28-pin, 1.9-mm by 3-mm BGA package at a suggested price of US$2.50 each in 1,000-unit quantities.