Input voltage automatic adjustment circuit and electronic equipment

Abstract

The embodiment of the invention discloses an input voltage automatic adjustment circuit. The input voltage automatic adjustment circuit comprises a power input end, a switch control module, a low-voltage switch module, a high-voltage switch module, a buck module and a power output end, wherein the power input end is used for inputting a power voltage, the switch control module is used for detecting the power voltage and outputting a high-level switch control signal or a low-level switch control signal according to a detection result, the low-voltage switch module is used for conduction to output the power voltage when the high-level switch control signal is received, the high-voltage switch module is used for conduction to output the power voltage when the low-level switch control signal is received, the buck module is used for reducing the power voltage output from the high-voltage switch module, the power output end is used for outputting the power voltage output from the low-voltage switch module or outputting the power voltage which is reduced by the buck module. The embodiment of the invention also discloses electronic equipment comprising the input voltage automatic adjustment circuit. Through the mode, with the input voltage automatic adjustment circuit disclosed by the embodiment of the invention, the electronic equipment can be prevented from being damaged due to excessive high input power voltage.

Description

technical field [0001] The embodiments of the present invention relate to the field of power supply for electronic equipment, and in particular, relate to an input voltage automatic adjustment circuit and electronic equipment. Background technique [0002] In practical applications, different types of electronic equipment may have different rated operating voltages, thus requiring different specifications for input power. For electronic equipment that needs to be driven by low voltage, if the input power supply voltage is high voltage, that is, the input power supply voltage exceeds the rated operating voltage of the electronic equipment, the electronic equipment will be burned due to the high input power supply voltage, resulting in equipment damage. Contents of the invention [0003] The technical problem mainly solved by the embodiment of the present invention is to provide an input voltage automatic adjustment circuit, which can prevent electronic equipment from being ...

AI Technical Summary

Problems solved by technology

For electronic equipment that needs to be driven by low voltage, if the input power supply voltage is high voltage, that is, the input power supply voltage exceeds the rated operating voltage of the electronic equipment, the electronic equipment will be burned due to the high input power supply voltage, resulting in equipment damage

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