Powering-on/off control circuit and electronic equipment with same

Abstract

The invention provides a powering-on / off control circuit and a piece of electronic equipment with the same. When a battery voltage monitoring circuit detects that the voltage of a battery is lower than a low threshold voltage, a logic circuit outputs a first enable signal according to a powering-on signal output by a switching circuit when the switching circuit is preset in a powering-on state, a voltage detection signal output by the battery voltage monitoring circuit after battery voltage detection and a power signal output by a processing circuit in response to the voltage detection signal, and a power conversion circuit stops working to cut off power supply of the battery to the processing circuit in response to the first enable signal. When the battery voltage monitoring circuit detects that the voltage of the battery is not lower than a powering-on threshold voltage, the logic circuit outputs a second enable signal, and the power conversion circuit makes the battery supply power to the processing circuit in response to the second enable signal and makes the system powered on. According to the invention, when the system is powered off due to low battery voltage, power supply of the system can be cut off completely to prevent the battery from over-discharge.

Description

technical field [0001] The invention relates to a switch machine control circuit and electronic equipment with the switch machine control circuit. Background technique [0002] When the mechanical switch of the power supply is normally on, the mobile terminal will automatically shut down when the battery power is lower than the system operating voltage, and after shutdown, the specific software inside the system needs to run the corresponding program to monitor the battery voltage, and when the battery voltage is monitored to rise After reaching the system start-up voltage threshold, the control system will automatically start up. [0003] However, running the above-mentioned program when the system of the mobile terminal is shut down will continue to consume battery current, thereby generating excessive shutdown leakage current. On the other hand, excessive leakage current will prolong the battery charging time of the mobile terminal. Furthermore, after the system is shut...

AI Technical Summary

Problems solved by technology

[0003] However, running the above program when the system of the mobile terminal is shut down will still continue to consume battery current, thereby generating excessive shutdown leakage current. , on the other hand, excessive leakage current will prolong the battery charging time of the mobile terminal

Furthermore, after the system shuts down when the battery power is lower than the system operating voltage, the power supply circuit will continue to work, which will also affect the service life of mobile terminal components

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