| 摘要 |
PROBLEM TO BE SOLVED: To provide a full-bridged switching power supply that suppresses self-oscillation and prevents destruction of a primary side switch. SOLUTION: In the full-bridged switching power supply, in which the primary and secondary portions are isolated by a transformer 15 and two pieces each of high-side switches 10, 12 and low-side switches 11, 13 are provided at the primary side, a self-oscillation preventing circuit 3 is provided that simultaneously turns off the two pieces of the high-side switches and simultaneously turns on the two pieces of the low-side switches. COPYRIGHT: (C)2008,JPO&INPIT
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