| 摘要 |
PURPOSE: A low ripple zero voltage switching converter is provided to reduce an output ripple by causing one of two transformers to be acted as an inverter during a main switch is switched, and to have the advantage of a converter having a center tap in secondary side. CONSTITUTION: In first and second transformers(TRNS1,TRNS2), first sides are serially connected and secondary sides are connected in parallel. A leakage inductor(L3) is connected to the first side inputs of the first and second transformers(TRNS1,TRNS2). A first switching element(Q1) is switched to apply voltage to the first sides of the serially connected first and second transformers(TRNS1,TRNS2). A condenser(C1) is connected in parallel to the first switching element(Q1). A second switching element(Q2) is connected in parallel to the first switching element(Q1) and is serially connected to the condenser(C2). A condenser(C2) is serially connected to the second switching element(Q2) and is connected in parallel to the first switching element(Q1). Third/fourth switching condensers(Q3,Q4) transfer voltage induced in the secondary sides of the transformers(TRNS1,TRNS2) to an output filter when switched.
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