Vehicle bidirectional DC-DC converter loss protector

The utility model discloses a vehicle bidirectional DC-DC converter loss protector comprising a first switch tube, a second switch tube, a first loss buffer absorption circuit, a second loss buffer absorption circuit, a first diode, a second diode, a resonant capacitor, and a control circuit. A first output end of the control circuit is connected with a grid electrode of the first switch tube; a second control circuit of the control circuit is connected with a grid electrode of the second switch tube; an input end of the control circuit is connected with a DC power supply voltage input end, a converter current output end and a converter voltage output end. The DC-DC converter has the adsorption circuit, so switch loss in open/close process of the switch tube can be effectively reduced, and energy can be absorbed. By employing the circuit, the voltage current overlapping area is small in conduction of the switch tube, thereby greatly reducing conduction loss; in closing process, the energy can be buffered and