Qi® 1.3 wireless charging reference design

New Qi®  1.3 Wireless Charging Reference Design Unveiled to Accelerate Development of Automotive and Consumer Qi Transmitter.

Microchip’s Qi 1.3 reference design is compliant with the recently released Qi 1.3 specification and includes everything needed to quickly develop a Qi 1.3 certified transmitter.

The Wireless Power Consortium (WPC) has recently released the Qi 1.3 specification that requires authentication for improved safety when transmitting up to 15W of power between a transmitter and a receiver. To meet the requirements of the specification, Microchip announced a new Qi® 1.3 wireless charging reference design providing developers of wireless charging systems for automotive and consumer applications with the necessary tools and support for the seamless integration and certification of new-generation product designs.

Features

For wireless charging system developers launching certified Qi 1.3 transmitters under tight timelines, Microchip’s three-coil Qi 1.3 reference design provides a head start for product development. The reference design fully integrates secure storage subsystem software with the wireless power microcontroller (MCU) and is a flexible solution, enabling custom topologies and foreign object detection (FOD) implementation. 

As a regular member in the Wireless Power Consortium (WPC), which sets global standards for wireless charging of mobile devices, Microchip provided expertise during development of the recently released Qi 1.3 specification. Qi 1.3 is a significant update from Qi 1.2.4 and mandates hardware-based authentication between transmitter and receiving devices for power transfer above 5W. By adhering to the new authentication standard, designers can ensure phones receiving 15W are receiving it from a Qi-certified authenticated transmitter to ensure safety.