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Charging method and mobile terminal

A technology of a mobile terminal and a charging method, applied in the field of mobile terminal charging detection, can solve the problems of excessive power consumption of the mobile terminal, damage to the mobile terminal and the like

Active Publication Date: 2017-08-08
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a charging method and a mobile terminal to solve the problems in the prior art that the mobile terminal consumes too much power and causes damage to the mobile terminal due to backfeeding

Method used

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] see figure 1 , figure 1 is a schematic diagram of a charging circuit provided by an embodiment of the present invention, such as figure 1 As shown, the charging circuit includes a MOSFET and a charge pump (Charge Pump) circuit for controlling the MOSFET to be turned on or off. When the mobile terminal is connected to the charger, the charge pump circuit detects the increase of the input voltage (Vbus), controls the MOSFET to turn on, and the c...

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Abstract

The invention provides a charging method and a mobile terminal. The method comprises the steps as follows: detecting the input voltage, output voltage and input current of a charging circuit; when the difference between input voltage and the output voltage is smaller than the preset voltage and the input current is smaller than the preset current, controlling the charging circuit to be opened. Thus, with the adoption of the charging method, the charging circuit can be timely opened when the mobile terminal has a backward input phenomenon, the excessive high power consumption of the mobile terminal can be effectively avoided, and the safety of the mobile terminal is improved.

Description

technical field [0001] The invention relates to the technical field of mobile terminal charging detection, in particular to a charging method and a mobile terminal. Background technique [0002] With the continuous development of electronic technology, low-voltage direct charging is becoming more and more popular. In order to improve the charging efficiency, the low-voltage charging no longer adopts the DC-DC (Direct Current-Direct Current) charging control method based on the ordinary charging IC (Integrated Circuit, but the DC-DC) charging control method based on the MOSFET (Metal-Oxide- Semiconductor Field-Effect Transistor, Metal-Oxide Semiconductor Field-Effect Transistor) charging control method. [0003] In the process of low-voltage direct charging, when the charger is unplugged, because the MOSFET is in the conduction state, the voltage of the power supply will be reversely input to the charging circuit, and the phenomenon of backfeeding will occur, which will caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/28G06F1/32
CPCG06F1/28G06F1/3206
Inventor 邵超杰
Owner VIVO MOBILE COMM CO LTD
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