Demodulating the Qi standard wireless power charger app note(PDF) using MC56F8006 digital signal controller from Freescale Semiconductor.
Wireless power is becoming more and more popular today, through which a number of electronic items like mobiles, laptops, media players, can be charged without cords or wires. It is beginning to show great potential in the consumer market.
Wireless Power Consortium (WPC) has developed a standard called Qi, which defines the types of inductive coupling and the communications protocol to be used for lowpower wireless devices. Qi creates interoperability between the Power Transmitter and the Power Receiver. As a regular member of WPC, Freescale has its own Qi-compliant low-power wireless charger reference design for the customers now.
This application note aims to describe the Qi communication data demodulation design for wireless charger transmitter with MC56F8006 digital signal controller (DSC) including Qi communication interface, demodulation circuits design, and demodulation software design.