Power supply control circuit and control method of computer system

Abstract

The invention relates to a power supply control circuit of a computer system and a control method. The computer system is provided with the power supply control circuit of an embedded type controller; and the power supply control circuit comprises a voltage stabilizer, a detection control circuit and the embedded type controller, wherein the voltage stabilizer receives a first voltage and can be used for converting the first voltage into a working voltage of the embedded type controller when the voltage stabilizer is enabled; the detection control circuit is used for receiving the first voltage and judging a key signal, disabling the voltage stabilizer when the key signal is not subjected to an action, and continuing to enable the voltage stabilizer when the key signal is subjected to an action; the embedded type controller is connected to the voltage stabilizer and used for receiving the working voltage and outputting a plurality of power supply control signals; and the embedded type controller can also provide a power starting signal to the detection control circuit so as to ensure that the detection control circuit continuously enables the voltage stabilizer.

Description

technical field [0001] The present invention relates to a power control circuit and a power control method in a computer system, and in particular to a power control circuit and a power control method of an embedded controller in a computer system. Background technique [0002] As we all know, a computer system will have an embedded controller (EC) for power management of the computer system, battery charging operation, and speed detection and control of cooling fans. Wherein, the power management also includes performing power sequence control tasks during startup and shutdown. [0003] Since the embedded controller plays the role of power management in the computer system, the design of the computer system must keep the embedded controller in an alive state forever. Even if the computer system has entered the power saving mode or shut down, the embedded controller still remains in the state of being awake (alive). Therefore, the embedded controller must be powered by sta...

AI Technical Summary

Problems solved by technology

[0007] However, when the battery is inserted into the computer system, the voltage regulator (regulator) 10 and the embedded controller 20 will continue to consume power, and their standby current (quiescent current) is about 3-5mA

In other words, if the computer system manufacturer combines the battery with the computer system for shipment, and after a period of time is traded to the user, the residual energy of the battery may not be able to turn on the computer system.

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