Microchip Announces Wireless Charging Reference with Qi 1.3 Support
Published2021.07.15 10:10Microchip Needs Qi 1.3 Certified Transmitter Development
Qi 1.3 Reference Design Unveiled, Offering Everything
The Wireless Power Consortium (WPC) recently announced the Qi® 1.3 specification, which requires enhanced safety certification for power transfers of up to 15W between transmitters and receivers. Microchip Technology Inc. today announced the release of a new Qi 1.3 wireless charging reference design.
Reference Design Announcement [Photo = Microchip]
Wireless charging system developers needing to launch Qi 1.3-certified transmitters can jump-start their product development with Microchip's 3-Coil Qi 1.3 Reference Design. This design fully integrates secure storage subsystem software with a wireless power MCU, supporting custom topologies and Foreign Object Detection (FOD).
The Qi 1.3 standard, which is a significant improvement over the existing Qi 1.2.4 standard, requires hardware-based authentication between transmitting and receiving devices when transmitting power exceeding 5W. The developer ensures that devices receiving 15W of power are safe to receive power from Qi-certified transmitters.
The 3-coil Qi 1.3 reference design includes a Qi controller, Qi application software, a provisioned authentication controller (a WPC-certified secure storage subsystem), and a cryptographic software library running on the Qi controller. Complete schematics, bill of materials (BOM), software, and design guidelines are also included. Furthermore, in partnership with Avnet, evaluation boards for the Qi reference design are available to customers worldwide.
To support Qi 1.3 wireless power solutions, Microchip offers its dsPIC33C family of devices running Qi application software and the ECC608/TA100 secure storage subsystem, which Microchip has provisioned as a WPC manufacturing certification authority. As a total system solution, this reference design also includes the MIC4605 and MCP14700 gate drivers, MCP16331/MCP1725 regulators, MCP6C02 current sensing device, ATA6563 CAN transceiver, and MCP9700 temperature sensor.
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