App note: Low-power wireless charger transmitter design using MC56F8006 digital signal controller

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An app note(PDF) from Freescale Semiconductor on 5-16V, free positioning multiple primary coils “Qi” compatible wireless power transmitter.

Wireless power transmission system transfers electrical power from transmitter to receiver without any wire connection. Due to safety, freedom, reliable, convenient and long life, wireless charging is popular, and widely used in everything such as toothbrushes, LED candles, remote controls, medical equipment, mobile phones, and other equipment.

This paper describes a Freescale low-power wireless transmitter solution (TX) compliant to the “Qi” standard of the Wireless Power Consortium (WPC), using single-stage fullbridge resonant inverter topology on Freescale ultra low cost MC56F8006 DSC device.

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