| 摘要 |
PROBLEM TO BE SOLVED: To provide a step-up DC converter capable of controlling an output power, and increasing reliability.SOLUTION: In a step-up DC converter including an inverter device 1 and a CW circuit 2, the inverter device 1 includes: at least one half-bridge circuit 11 connected in parallel with a DC power supply; a control circuit 13 for driving at least one half-bridge circuit 11; and a transformer 14 having a primary coil W1 and a secondary coil W2 and a tertiary coil W3 magnetically connected to each other, and electrically isolated from each other. One end of the primary coil W1 is connected to a midpoint of at least one half-bridge circuit 11, and the secondary coil W2 is connected to the CW circuit 2, and the tertiary coil W3 is connected to the control circuit 13, and configured to output a detection voltage based on the secondary coil voltage W2 to the control circuit 13. The control circuit 13 drives at least one half bridge circuit 11 on the basis of the detection voltage. |
