| 摘要 |
A multi output switching power supply for saving power consumption in a standby state is provided to reduce standby power consumption of an entire load terminal by using one switch. A multi output switching power supply for saving power consumption in a standby state includes a power transformer(210), two or more output circuit units(220-1,220-2), a standby power consumption reducing element(230), a sub output unit(240), a feed-back unit(250), and a switching control unit(260). The two or more output circuit units are connected to each other in parallel. The standby power consumption reducing element is connected between ends of the two or more output circuit units and a ground to be on and off according to a control signal applied from an outside. The sub output unit is connected to the output circuit units in parallel. The switching control unit is controlled by an output signal of the feed-back unit to switch a current flowing in a primary coil of the power transformer.
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