POWER SUPPLY DEVICE AND METHOD FOR REDUCING POWER CONSUMPTION OF THE SAME

摘要

A power supply device with reduced power consumption is electrically connected to a motherboard. The motherboard outputs a power-on signal or a power-off signal to the power supply device when being triggered. The power supply device includes a standby power supply module which modulates an external power to output a standby power. Upon receiving the power-on signal, the power supply device deactivates the standby power supply module, but activates a main power supply module to modulate the external power to output an operating power to the motherboard to replace the standby power. Upon receiving the power-off signal, the power supply device deactivates the main power supply module, but reactivates the standby power supply module so that the standby power supply module outputs the standby power to the motherboard.

主权项

1. A method for reducing power consumption of a power supply device, the power supply device receiving an external power which is modulated by a standby power supply module into a standby power output to a motherboard, the power supply device including a power-on status in which the power supply device receives a power-on signal from the motherboard and modulates the external power by a main power supply module to output an operating power, and a power-off status in which the power supply device receives a power-off signal from the motherboard and stops the main power supply module from modulating the external power, the method comprising the steps of:
triggering the motherboard to output the power-on signal to the power supply device; activating the main power supply module to modulate the external power into the operating power output to the motherboard when the power supply device receiving the power-on signal, and deactivating the standby power supply module to stop modulating the external power and supplying the standby power after an activation transient period elapses; triggering the motherboard to output the power-off signal to the power supply device; and deactivating the main power supply module to stop modulating the external power when the power supply device receiving the power-off signal, and reactivating the standby power supply module to modulate the external power into the standby power output to the motherboard.