Wireless power transfer gate-drive power reduction

A device and circuits are provided for wireless power transfer (WPT) gate-drive power reduction. A WPT receiver circuit includes a receive coil to couple to a transmit coil of a WPT transmitter circuit. A rectification circuit is coupled to the receive coil to generate a rectified voltage. The recti...

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Bibliographische Detailangaben
1. Verfasser:	Desrosiers, Ryan Michael
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SYSTEMS FOR STORING ELECTRIC ENERGY TRANSFORMERS
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Beschreibung
Zusammenfassung:	A device and circuits are provided for wireless power transfer (WPT) gate-drive power reduction. A WPT receiver circuit includes a receive coil to couple to a transmit coil of a WPT transmitter circuit. A rectification circuit is coupled to the receive coil to generate a rectified voltage. The rectification circuit is a bridge rectifier circuit including a first set of field-effect transistors (FETs). One or more gate-drive control circuits improve power dissipation of the rectification circuit by controlling drive voltages of gate terminals of the first set of FET switches after start-up of the WPT receiver circuit.