| 摘要 |
<p>A main transformer (8) and first and second pulse transformers (9, 10) are used to respectively drive a first power switch (4) in a primary side circuit and a first synchronization rectifier (11) in a secondary side circuit, and a second power switch (5) in the primary side circuit and a second synchronization rectifier (12) in the secondary side circuit, respectively at a complementary timing. First turn-off and first turn-on edge signals generated in a primary side control circuit (70) are transmitted to the secondary side through the first pulse transformer (9) to generate a drive signal of the first synchronization rectifier (11). Furthermore, second turn-off and second turn-on edge signals generated in the primary side circuit are transmitted to the secondary side through the second pulse transformer (10) to generate a drive signal of the second synchronization rectifier (12).</p> |
