Smallest Wireless Charging Chip Introduced by Texas Instruments

Texas Instruments has announced a new wireless power receiver chip that is 80 percent smaller than its predecessor. The new chip is Qi-complaint, so it maintains the wireless charging standards that are already in existence. Despite being much smaller in size, the new chip still provides 5W of output and has peak efficiency in the 93 percent range, comparable to an AC adapter. The smaller size will make it much easier for manufacturers of wireless devices such as phones and tablets to embed the chip in their products.

The bq51013 receiver integrated circuit (IC) combines voltage conditioning and full wireless power control in a small 1.9-mm x 3-mm WCSP package. The new circuit supports up to 5 W of output power, provides up to 93-percent efficient AC/DC power conversion and is the only IC required between the receiver coil and system.

“Smartphone and consumer electronics manufacturers are demanding wireless power, and TI is well positioned to help our customers drive widespread adoption of this technology that makes life easier for people on the go to charge their devices,” said Sami Kiriaki, senior vice president over TI’s Power Management business. “Designers can use the bq51013 to quickly integrate wireless power into existing and new applications with minimal impact to overall solution size.”

Key features and benefits

• Highly integrated and efficient wireless power receiver IC includes full-bridge synchronous rectification, voltage conditioning and wireless power control in a single device. [advt]
• 1.9-mm x 3-mm WCSP package allows for easy integration with minimal size impact. Device area is 80 percent less than TI’s first-generation receiver.
• The receiver and its associated bq500110 transmitter IC are Wireless Power Consortium (WPC) Qi-compliant. This compliance ensures interoperability between various charging pads and portable devices.
• Built-in protection against voltage, current and temperature fault conditions, assures safe and reliable system operation.
• 93-percent peak efficiency reduces thermal rise inside the system while allowing charge rates comparable to an AC adapter.