Wireless power transmitter having low noise and high efficiency, and related methods
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United States of America Patent
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Feb 19, 2019
Grant Date -
May 15, 2014
app pub date -
Nov 8, 2013
filing date -
Nov 9, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A wireless power transmitter comprises a bridge inverter including a first switch and a second switch coupled together with a first switching node therebetween, and a first capacitor coupled to the first switching node. The transmitter further includes control logic configured to control the first switch and the second switch according to an operating frequency to generate an AC power signal from a DC power signal, and a resonant tank operably coupled to the first switching node of the bridge inverter, the resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto. A method for operating the wireless power transmitter and a method for making the wireless power transmitter are also disclosed.
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