Wireless power chip suits portable electronics

Texas Instruments Inc. introduces its next generation of wireless power technology, which is 80% smaller than its previous receiver chip. The tiny, highly integrated device makes it easy for designers to implement wireless charging into designs for portable consumer devices, such as smart phones, gaming systems, digital cameras, and medical and industrial equipment.
 
The bq51013 receiver integrated circuit (IC) combines voltage conditioning and full wireless power control in a small 1.9 x 3 mm WCSP package. The new circuit supports up to 5 W of output power, provides up to 93% efficient ac-dc power conversion and is the only IC required between the receiver coil and system.   
 
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.
• 1.9 x 3 mm WCSP package allows for easy integration with minimal size impact. Device area is 80% 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% peak efficiency reduces thermal rise inside the system while allowing charge rates comparable to an ac adapter.