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Microchip - New wireless charging reference design accelerates development of Qi transmitter

Technology Cover
Post Date: 2021-09-22, Microchip Technology
WPC released the Qi 1.3 specification, which requires authentication to improve security when transmitting up to 15W of power between the transmitter and receiver.
In order to meet the specification requirements, Microchip Technology provides a new Qi 1.3 wireless charging reference design, which provides the necessary tools and support for developers of wireless charging systems for automotive and consumer applications to achieve seamless integration and certification of new-generation product designs.
For wireless charging system developers who are launching certified Qi 1.3 transmitters within a tight time frame, its three-coil Qi 1.3 reference design provides a good start for product development. This reference design fully integrates the secure storage subsystem software with the wireless power MCU and is a flexible solution that facilitates custom topology and FOD implementation.
"Wireless charging allows consumers to easily and conveniently charge devices, so the demand for these systems in the automotive and consumer sectors is rising," said Joe Thomsen, vice president of MCU16 business unit. "Microchip's Qi 1.3 reference designs, tools, and support help engineers meet rapidly changing development requirements and can easily certify new Qi 1.3 transmitter designs, speed time to market and simplify final product certification."
Its reference design solution contains all the necessary elements: Qi controller, Qi application software, pre-built authentication controller (a WPC approved secure storage subsystem), and an encrypted software library executed on the Qi controller. The reference design includes a complete schematic, BOM, software, and design guide.

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