Patent ID: 8558525
Filing Date: 2013-10-15
Classification: H02M,H03K,Y02B

Abstract:
1. An apparatus comprising: a first switch device; a first driver circuit to drive the first switch device; a second switch device; a second driver circuit to drive the second switch device; the first switch device and the second switch device electrically coupled to each other and a node of an inductor through which current is delivered to a load, the first switch device and the second switch device activated at different times based on reuse of switch activation energy; a bridge circuit to transfer the switch activation energy between the first driver circuit and the second driver circuit, the first driver circuit and the second driver circuit utilizing the transferred switch activation energy to drive respective gates of the first switch device and the second switch device at the different times; and a controller to initiate reuse of the switch activation energy via the transfer of the switch activation energy between the first driver circuit and the second driver circuit, the controller initiating a transfer of the switch activation energy between the first driver circuit and the second driver circuit depending on a magnitude of an output voltage applied to the load, the controller utilizing the switch activation energy to activate the first switch device while the second switch device is deactivated, the controller initiating a transfer of the switch activation energy previously used to activate the first switch device from the first driver circuit through the bridge circuit to the second driver circuit to activate the second switch device while the first switch device is deactivated.