Patent ID: 9236807
Filing Date: 2016-01-12
CPC Classification: H02M,Y02B

Claim Text:
1. A DC/DC converter comprising: an output circuit having a load; a rectangular wave generator comprising switches for converting an input direct current (DC) voltage into at least one rectangular wave; a resonant tank for providing a first voltage based on the rectangular wave for the output circuit; a detection unit for detecting a signal related to a state of the load; and a control unit outputs control signals to the switches of the rectangular wave generator for controlling a duty ratio of the rectangular wave outputted by the rectangular wave generator, so that when the state of the load is a light-load or a no-load, the control signals control the switches of the rectangular wave generator to make the rectangular wave generator work in a hiccup mode, and the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio for reduction in the on-off times of the switches of the rectangular wave generator per unit time.