Startup and shutdown circuit

Abstract

The invention relates to startup and shutdown technology of electronic products, in particular to a startup and shutdown circuit. The startup and shutdown circuit comprises a startup and shutdown key, a system main control chip, a hard startup circuit, a soft shutdown circuit, a forced shutdown circuit and a system power supply, wherein the hard startup circuit, the soft shutdown circuit, the forced shutdown circuit and the system power supply are all formed by discrete components. The hard startup circuit, the soft shutdown circuit and the input end of the forced shutdown circuit are all connected with the startup and shutdown key. The output end of the hard startup circuit is connected with the system power supply, the output ends of the soft shutdown circuit and the forced shutdown circuit are connected with the system power supply through the hard startup circuit, and the soft shutdown circuit is further connected with the system main control chip. The startup and shutdown circuit is composed of all discrete components and is simple and low in standby power consumption and cost compared with startup and shutdown circuits controlled by an advanced reduced instruction set computer machine (ARM) / micro controller unit (MCU) / Super input / output (IO) / electronic computer (EC) / south bridge chip. Simultaneously the startup and shutdown circuit has high circuit reliability, can achieve a startup and shutdown control method same as that of x86 platform products (personal computer (PC) and Notebook) under the condition of non-x86 platform products, and increases a new user experience effect.

Description

technical field [0001] The invention relates to the switch technology of electronic products, in particular to a switch machine circuit. Background technique [0002] At present, there are generally four ways to manually switch the circuit of different electronic products in the industry as follows: [0003] The first is the switch circuit generally applied to the x86 platform (such as PC): the switch process is controlled by the SuperIO / EC chip and the South Bridge chip. The switch method is to press the switch in the shutdown state (S5) The system automatically powers on and starts with the computer button; in the power-on state, click the shutdown control button in the Window start menu, and the system will automatically power off and shut down after saving the current data, that is, soft shutdown; in the power-on state, press and hold the power button for 4 seconds to force the system to shut down. Electric shutdown, mainly for applications that need to be shut down qui...

AI Technical Summary

Problems solved by technology

[0006] The fourth type is the switching circuit applied to other equipment: the power supply is directly turned on and off through the mechanical switch, without the participation of the soft shutdown process and the main control chip, and the power supply process is easy to cause the power supply to oscillate, so that the device is switched on and off instantly. damage

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