Power Electronics

5-V, Qi-Compliant Wireless Power Transmitter

Expanding its growing portfolio of wireless charging technology for portable electronics, Texas Instruments Incorporated 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.

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.


  • 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.

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.

Texas Instruments
Part Number: bq500211

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.