Bidirectional low DC-DC converter including lossless snubber circuit, control method of bidirectional LDC and bidirectional LDC system

Abstract

According to an embodiment of the present disclosure, provided is a bidirectional LDC (Low DC-DC Converter) having opposite ends connected to a high voltage battery and a low voltage battery, respectively, and including a lossless snubber circuit, wherein, when any one of a first synchronous rectifier and a second synchronous rectifier is turned on, a voltage of a low voltage side connected to the low voltage battery is stepped up and transmitted to a high voltage side connected to the high voltage battery. When the first synchronous rectifier and the second synchronous rectifier are turned off, a first switch of the lossless snubber circuit is turned on to perform a voltage clamping operation and a freewheeling operation.

Dependencies are inferred from the claim text.