Patent ID: 8981737
Filing Date: 2015-03-17
Classification: H02M

Abstract:
1. A DC-DC converter, comprising: an input terminal for receiving an input voltage from an input voltage source disposed at an input voltage level; an output terminal for providing an output voltage at an output voltage level different than the input voltage level to a load connected to the output terminal; an energy storage element for receiving and storing energy from the input voltage source on an input side thereof via the input terminal and transferring at least a portion of the stored energy to the load from an output side thereof; and a control system for controlling the storage of energy to and transfer of energy from the energy storage element in at least three recurring phases to attain a desired level for the output voltage level, the three phases comprising an energy storage phase for storing energy from the input terminal in the energy storage element, a first energy transfer phase for transferring only a portion of the stored energy from the energy storage element to the load, and a second energy transfer phase to transfer substantially all of the energy to the load, the control system for initiating the second energy transfer phase in response to a magnitude of the output voltage equaling or exceeding a magnitude of the desired level for the output voltage.