| 摘要 |
PROBLEM TO BE SOLVED: To provide a resonance type DC-DC converter capable of controlling an output voltage constant even if an input voltage is varied, with a low loss and in a relatively simple circuit configuration.SOLUTION: The resonance type DC-DC converter includes: an inverter 15; an insulation transformer 30; a rectification circuit 40; a resonance circuit 20 that is connected in series with a primary coil on a path from one output terminal of the inverter 15 through the primary coil of the insulation transformer 30 to another output terminal of the inverter 15; and a two-way switch S. Switching elements Sand Sof the inverter 15 are alternately turned on and turned off in a fixed frequency and switching elements Sand Sof inverse voltage resistance forming the two-way switch Sare alternately turned on and turned off in a fixed frequency. A conduction period of the switching elements Sand Sand a conduction period of the switching elements Sand Sare shifted.SELECTED DRAWING: Figure 1 |
