| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC/DC converter that can reduce the switching loss when a switching element constituting a conversion circuit is switched to ON, and stabilize the common mode voltage at an input side of the conversion circuit.SOLUTION: A DC/DC converter 1 has a conversion circuit 2, a transformer T1, a clamp circuit 5 and a control circuit 4. The conversion circuit 2 has four switch elements Q1 to Q4, and converts an input DC voltage to an AC voltage. The clamp circuit 5 is electrically connected between the conversion circuit 2 and the primary winding T11 of the transformer T1, and forms a closed circuit in which primary-side current I1 flows, together with the primary winding T11. The clamp circuit 5 has switches QC1, QC2 for opening/closing the closed circuit. The control circuit 4 controls the four switch elements Q1 to Q4 and the switches QC1, QC2.SELECTED DRAWING: Figure 1 |
