POWER SUPPLY AND METHOD FOR SUPPLYING POWER TO MOTHERBOARD

摘要

A monitored and high-efficiency power supply for a motherboard includes an AC-to-DC conversion circuit, a control circuit, a standby circuit, a main output circuit, a standby output circuit. The AC-to-DC conversion circuit converts an AC source voltage to a DC voltage. When the power supply is in a standby state, the standby circuit is enabled but when the power supply is in a normal working state, the standby circuit is disabled, and the control circuit is enabled to control only the main voltage output to the motherboard. A method for supplying power to a motherboard is also provided.

主权项

1. A power supply for supplying power to a motherboard, the power supply comprising:
an AC-to-DC conversion circuit for converting an AC source voltage to one or more DC voltages; a control circuit connected to the AC-to-DC conversion circuit; a standby circuit connected to the AC-to-DC conversion circuit; a main output circuit connected to the control circuit; and a standby output circuit connected to the standby circuit and the control circuit; wherein when the power supply is in a standby state, the standby circuit is enabled, the control circuit is disabled, and the standby circuit controls the standby output circuit to output a standby voltage to the motherboard, when the power supply is in a normal working state, the standby circuit is disabled, the control circuit is enabled, the control circuit controls the main output circuit to output a main voltage to the motherboard.