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TI introduces first 5-V, Qi-compliant wireless power transmitter

Next-generation power circuit to increase adoption of USB-connected wireless charging pads

Sep 13, 2012

DALLAS (Sept. 13, 2012) – Expanding its growing portfolio of wireless charging technology for portable electronics, Texas Instruments Incorporated (TI) (NASDAQ: TXN) today introduced the bq500211, the industry’s first wireless power transfer controller that allows consumers to operate a Qi-compliant charging pad from any USB port or 5-V power adapter. To order samples and a development kit, visit: www.ti.com/bq500211-pr.     

Designed for 5-V systems, the transmitter circuit allows the charging pad to safely engage with a Wireless Power Consortium (WPC) Qi-compliant device, such as a smartphone or other portable electronics device, receive packet communication and efficiently manage the power transfer. The bq500211 also features TI’s Dynamic Power Limit™ feature to optimize available power from a limited power source.  

Features and benefits of bq500211:
• Enhanced user experience: First integrated transmitter circuit to allow consumers to plug a wireless power pad into any USB port or 5-V power system.
• Intelligent control of wireless power transfer: TI’s Dynamic Power Limit technology optimizes available power from limited input supplies.
• Saves board space: The circuit can operate as a WPC A5 transmitter with a magnetic positioning guide or as an A11 transmitter without the need of a magnet.
• Fault detection for more reliable operation: Comprehensive charge status mode and fault indication features alert the user of any abnormal condition during power transfer.

TI and wireless power
TI’s wireless power integrated circuit portfolio is helping fuel design engineers’ imagination to develop innovative, efficient wireless charging capabilities for smartphones, tablets and other portable electronics, and design wireless power charging sources, ranging from pads to sources used in cars and furniture. TI’s bq5101x integrated receivers provide a regulated DC output and digital-control feedback to the transmitter, while TI’s bq500xx family of wireless power transmitters efficiently manages the power transfer to the receiver. See: www.ti.com/wirelesspower-pr.

Availability and pricing
The new bq500211 wireless power transmitter comes in a 48-pin, 7-mm by 7-mm QFN package with a suggested resale price of US$3.95 each in 1,000-unit quantities. The bq500211 is available in volume production through TI and its worldwide network of authorized distributors.

Find out more about TI’s wireless power solutions, application notes and evaluation modules:
• Order the new bq500211EVM-045 evaluation module and application note to get started on Qi-compliant wireless power transmitter design.
• Join the TI E2E™ Power Community to ask questions and help solve problems with fellow engineers: www.ti.com/powerforum-pr.

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