Applied Power Electronics Conference 2013

Digitally controlled synchronous bridge-rectifier for wireless power receivers

Reducing power loss in wire­less power recei­vers is important to avoid ther­mal design issu­es. Synchronous rec­ti­fi­ca­ti­on is a sui­ta­ble means for loss reduc­tion. In this paper we pro­po­se a syn­chro­nous rec­ti­fier with a simp­le con­trol sche­me. A detail­ed ana­ly­sis leads to a time-domain model which is used to per­form a power loss ana­ly­sis. Experimental veri­fi­ca­ti­on shows that the pre­dic­ted effi­ci­en­cy impro­ve­ment agrees with mea­su­re­ment results.

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