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Protective circuit, protective method and software realizing method for portable terminal low-power system protection

A portable terminal and system protection technology, applied in the field of embedded mobile terminals, can solve the problems of power failure protection, unable to provide large capacitance, unable to ensure that mobile terminals are used in industrial applications, etc., to achieve the effect of realizing data

Inactive Publication Date: 2011-07-27
GAREA TECH WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing mobile terminals are limited by wiring and cannot provide large capacitors for power-off protection. Generally, the system can be restored to the last data backup stage at most, which cannot ensure that mobile terminals are well used in industrial applications.

Method used

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  • Protective circuit, protective method and software realizing method for portable terminal low-power system protection
  • Protective circuit, protective method and software realizing method for portable terminal low-power system protection
  • Protective circuit, protective method and software realizing method for portable terminal low-power system protection

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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the core logic circuit of the low battery system protection of the portable terminal of the present invention includes a power management module 8, a power switching module 9, a battery 10 and a minimum system. The minimum system is composed of a CPU chip 1, a memory 2 and a flash memory 3; the CPU chip 1 includes a CPU core 4, a CPU cache 5, a memory controller 6 and a flash memory controller 7.

[0022] Such as figure 1 As shown, the power management module 8 and the power switching module 9 are respectively connected to the battery 10, and the power management module 8 and the power switching module 9 are respectively connected to the minimum system by power supply output lines. The power supply design of the smallest system is based on the least power domain, and its power supply connection method is: ...

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Abstract

The invention relates to a protective circuit, a protective method and a software realizing method for portable terminal low-power system protection, and is applied to embedded mobile terminal equipment with a power supply management module. The core logical circuit in the invention comprises a power supply management module, a power supply switchover module, a battery and a minimum system, wherein when the battery power is insufficient for the whole system through the power supply management module, and the system detects that voltage is lower than a threshold valve, the power supply management module is closed, and the battery directly supplies electricity for the minimum system through voltage conversion. The protective circuit closes power supply for the system by closing the power supply management module, and software is not required to close each path of power supply; the power supply voltage of the minimum system is far lower than the work voltage required by normal startup of the system in general condition, and power supply of the power supply management module is converted to direct battery power supply through a hardware circuit, so that the data is protected under a condition that the mobile terminal battery is insufficient in power.

Description

technical field [0001] The invention relates to the field of system power supply, in particular to a core logic circuit and software processing method for low-power system protection, which are mainly applied to embedded mobile terminals with high requirements for system consistency. Background technique [0002] At present, the sudden power loss of the battery of the mobile terminal due to poor contact can be solved by hardware interface design, but the frequent power loss problem is not caused by poor battery contact, but due to insufficient battery power, especially After the battery has been used for a period of time, the performance of the battery degrades and the system detects that the voltage is lower than the threshold value and cannot be shut down normally. Normal shutdown With the continuous enrichment of mobile terminal peripherals, the longest normal shutdown time may reach 10S, and it is possible that during the shutdown process, the voltage may not be sufficie...

Claims

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Application Information

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IPC IPC(8): G06F11/00
Inventor 王晓东国大伟
Owner GAREA TECH WUXI
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