Patent ID: 7480157

Claim:
A power architecture for providing voltage modulation power, connected to a power source for obtaining an input power and converting thereof into an output power so as to drive at least a load of a power supply, wherein the power supply comprises: a PFC (Power Factor Correction) unit, connected to the power source and having a voltage modulation power level for converting the input power into a voltage modulation power; a transformer, whose primary side is connected to the PFC unit and which is used to receive the voltage modulation power for transforming thereof into the output power; and a power level correction unit, connected to a secondary side of the transformer for receiving the output power, which drives the load, so as to acquire a load utilization power signal, wherein the power level correction unit decides a load power utilization ratio according to the load utilization power signal and outputs a power level correction signal to the PFC unit for adjusting the voltage modulation power level so as to adjust the voltage modulation power, so that the PFC unit outputs a voltage-modulate power which conforms to the utilization power ratio of the load to the transformer.