PMU enables multi-standard wireless reciever design

28th May 2014
Staff Reporter

A multi-standard smartphone PMU has been introduced by Broadcom, driving Rezence technology into the mainstream while providing compatibility with existing deployed standards. The BCM59350 wireless charging PMU enables automatic selection between specifications from all three leading standards organizations including the A4WP, PMA and WPC for OEM flexibility. 

A4WP uses resonant technology, called Rezence, that allows consumers to "drop and go," placing multiple devices on a single charging surface without the trouble of accurate positioning or alignment. When combined with Broadcom's WICED (Wireless Internet Connectivity for Embedded Devices) Smart family of SoCs and software for the charging pad, manufacturers can now build complete and broadly compatible end-to-end wireless charging solutions. 

"Broadcom's new wireless charging technology enables device manufacturers to build multi-standard wireless power receivers, alleviating consumer confusion and driving the benefits of Rezence technology into the mainstream," said Reinier van der Lee, Broadcom Product Director, Mobile Platforms. "Broadcom delivers the complete package — interoperable wireless charging, leading mobile connectivity and WICED Smart technology for charging pads, simplifying the development process and enabling a fully interoperable ecosystem to our customers."

Rezence uses Bluetooth Smart technology as a reliable communication channel between the smartphone and charging surface, taking advantage of the wide deployment of Bluetooth in mobile devices and wearables. Leveraging Broadcom's combo connectivity leadership, mobile device manufacturers can easily add multi-standard wireless charging, simplifying development and accelerating time to market for a best-in-class smartphone platform design.

"Demand for wireless charging is set to explode over the next five years," said Ryan Sanderson, IHS Technology Associate Director, Power Supply & Storage Components. "IHS forecasts the number of devices shipped annually that are enabled to charge wirelessly to increase to over $50 million in 2014 and accelerate to $900 million in 2018. This is projected to drive a combined market for wireless power receivers and transmitters worth $8.5 billion in 2018."

Key Features:
• Efficient - up to 88 percent AC to DC efficiency
• High performance - supports up to 7.5W for faster charge time than standard USB and wall charger
• Boost mode - Broadcom enables charging performance with 50 percent less voltage
• Support for automatic selection between standards and single mode operation
• NFC coexistence - Broadcom's wireless charging design ensures high-quality NFC performance
• Implementation flexibility - can be designed in a smartphone motherboard or battery cover
• Small PCB footprint - Broadcom's design supports multiple standards in the same size as a single standard solution
• Low cost - Broadcom's solution has a cost-effective bill of materials with no external active components, excluding WICED Smart

The Broadcom BCM59350 wireless charging smartphone PMU is now sampling with select customers.

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