| 摘要 |
PROBLEM TO BE SOLVED: To provide a bidirectional DC-DC converter with suppressed loss.SOLUTION: A bidirectional DC-DC converter comprises: a resonance circuit provided between a power-supply side and a load side and including a capacitor and an inductor; a bridge circuit having a first switching element, a second switching element, a third switching element, and a fourth switching element; and a control circuit controlling switching of the bridge circuit. The first switching element and the second switching element are connected to the bridge circuit so as to pass a current in a first direction with respect to the resonance circuit, and the third switching element and the fourth switching element are connected to the bridge circuit so as to pass a current in a second direction opposite to the first direction with respect to the resonance circuit. The control circuit switches a first period causing the first switching element and the second switching element to be an on-state and a second period causing the third switching element and the fourth switching element to be the on-state. The first direction and the second direction switch according to the magnitude of a potential between the power-supply side and the load side. |
