Power-off and reset circuit and intelligent central controller

Abstract

The invention belongs to the technical field of power supply management, and relates to a power-off and reset circuit and an intelligent central controller. The connection state between a power supplyand a main control circuit is controlled through a first switching circuit; a charging and discharging circuit receives the control signal and the power supply signal provided by the main control circuit, and performs charging and discharging according to the control signal and the power supply signal to generate a switch control signal; and a second switching circuit controls the on-off state ofthe first switching circuit according to the switch control signal; therefore, the main control circuit is not powered off during resetting, power is thoroughly cut off without resetting during powerfailure, the power failure function and the resetting function of the main control circuit do not interfere with each other, and the performance is reliable; power is thoroughly off in the power-offprocess, so that the electric energy loss is reduced, the standby time is prolonged, an expensive integrated chip or controller is prevented from being adopted to realize reset and power-off control,the economic practicability of the power-off and reset circuit is improved, and the waterproof performance of a product is enhanced.

Description

Technical field [0001] This application belongs to the technical field of power management, and in particular relates to a power-off and reset circuit and an intelligent central control. Background technique [0002] Currently, traditional handheld devices have built-in batteries and charging ports. In order to ensure the service life of the built-in battery, the power supply of the internal battery is generally disconnected from the single board at the factory, so that the handheld device can maintain a long storage time (one year or several years). In order to better waterproof, the built-in battery is sealed inside the product and forms an integrated machine with other functional modules of the product. In the production process of handheld devices, the single board must disconnect the switch between itself and the built-in battery (ie, cut off its own power) when the factory is tested and finally shipped. When the handheld device is in the hands of the user, the user plugs ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a power-off and reset circuit and an intelligent central control, aiming to solve the problem that the traditional reset process will cause power-off, and the power-off cannot be completely turned off when the power is off, resulting in waste of energy consumption and affecting storage standby or use time.

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