| 摘要 |
PROBLEM TO BE SOLVED: To provide a switching-element driver circuit capable of discretely driving two switching elements by one auxiliary winding. SOLUTION: First and second switching, elements 41 , 42 , which are connected in series with a switching-element driver circuit 2 and to which DC voltage is applied, and first and second driving sections 51 , 52 discretely turning these switching elements 41 , 42 on-off are installed. One end of a main winding 9 is connected at a section, where the first and second switching elements are joined mutually, and first and second auxiliary power supply sections 61 , 62 supplying the first and second driving sections 51 , 52 with voltage are linked at the same one end of an auxiliary winding 3 magnetically coupled with the main winding 9 through first and second diodes 81 , 82 . A current flowing through one auxiliary winding 3 can be rectified separately by the first and second diodes 81 , 82 , and the auxiliary power supply sections 61 , 62 can be charged respectively. |
