| 摘要 |
A power supply device can improve the electromagnetic wave(EMI) property with the same clock frequency by applying the clock synchronization signal from the clock synchronization circuit part to the second output controller. The power supply device(200) comprises the first transformer(T1), the input circuit(210), the first output circuit(220), the second output circuit(240) and the first output controller(260), and the clock synchronization circuit part(270) and the second output controller(290). The first transformer comprises the first coil(L1), the second coil(L2) and the third coil(L3). In the first coil of the primary side, the input circuit is connected. In the second coil of the secondary side, the first output circuit is connected. In the third coil, the second output circuit is connected.
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