Electric power control structure of power supply apparatus

Abstract

The invention discloses an electric control framework for power supply, comprising a main electric power system which can convert the external electric power supply into the DC electric power and an electric power open-close unit which is in electric connection with the main electric power system and is driven by a DC electric power at the normal state, wherein the transmission line of the DC electric power which drives the electric device is provided with at least a diverter switch which is in electric connection with the electric power open-close unit, thereby, the electric device is not affected when a computer is shut down, the computer which is at the shut-down state can continuously output the DC power supply to supply the electric power needed by the external electric device; moreover, even the computer is at the shut-down state, the DC power supply supplied by the computer is also the maximum electric power (only provided with the main electric power system) or the total electric power (provided with the main electric power system and the standing electric power system which are connected with each other in parallel) supplied by the power supply.

Description

technical field [0001] The invention relates to a power supply, in particular to a design capable of outputting maximum DC power to supply external electronic devices even when the computer is in a shutdown state. Background technique [0002] General computer mainframes are equipped with power supplies, whose main purpose is to convert AC power into stable DC power at different voltage levels to provide the various devices in the mainframe computer (such as motherboards, hard drives, optical drives, etc.) The main design method in the early stage is to supply current to the various components in the computer system when the power supply is turned on. [0003] As far as the mainstream design architecture of the current ATX specification is concerned, one of its characteristics is that in addition to the DC power supply (3.3V, 5V, 12V...) provided when the computer is turned on, it also has Standby power systems that can provide computer mainframe activation power. [0004]...

AI Technical Summary

Problems solved by technology

[0004] But today's personal computer applications, in addition to the work that needs to be run using the operating system and other application software programs, also include many external electronic devices that can run independently when the computer host is turned off, such as speakers, night lights, and direct access to the computer using the optical drive panel. Playing music CDs, charging PDAs, mobile phones and other devices through the USB interface, or observing the temperature, humidity, time and other information displayed on the small LCD screen assembled on the case, or enjoying the dazzling case with luminous effects, etc., All such applications can run independently without the operating system activated. However, most of the existing power supply designs can only realize the above functions when the system is turned on, or use the standing power system of the power supply. Provide DC power output when the computer is turned off; however, due to the low maximum wattage that the standing power system can provide and the small number of voltage output groups, when the user wants to connect a higher-power external electronic device, The power that the standing power system can supply cannot meet the needs of users

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