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US08488348B2 Switch mode power supply apparatus having active clamping circuit 有权
具有有源钳位电路的开关电源装置

Switch mode power supply apparatus having active clamping circuit
Abstract:
A switch mode power supply apparatus includes a transformer, a main switching device to adjust a power supply supplied to a primary coil of the transformer, an active clamping circuit to suppress a voltage stress of the main switching device, and a control circuit to control a clamping operation of the active clamping circuit when the switch mode power supply apparatus is in a standby mode. Therewith, it is possible to significantly reduce power consumption of the switch mode power supply apparatus in the standby mode and improve efficiency of the switch mode power supply apparatus.
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