Multipath charging circuit and protocol control module and control method thereof

Abstract

The invention discloses a multipath charging circuit, which comprises: a first-stage power converter for converting an AC input voltage into a DC power supply voltage; a plurality of second-stage power converters connected with the first-stage power converter and used for converting the DC power supply voltage into a plurality of charging voltages; a plurality of charging ports respectively connected with the plurality of second-stage power converters and used for charging electric equipment; and a protocol control module used for generating a first control signal according to the protocol parameters of the electric equipment connected to the plurality of charging ports so as to adjust the DC power supply voltage, and generating the control signals of the plurality of second-stage power converters so as to adjust the plurality of charging voltages. According to the invention, the protocol control module of the multipath charging circuit supports protocol communication and analysis of aplurality of charging ports, obtains a direct-current power supply voltage reference value according to the protocol parameters and provides respective control signals for a plurality of second-stagepower converters to realize flexible adjustment of the direct-current power supply voltage so as to support independent control and simultaneous quick charging of a plurality of electric equipment.

Description

technical field [0001] The present invention relates to power supply technology, more specifically, to a fast charging multi-channel charging circuit and its protocol control module and control method. Background technique [0002] Fast charging circuits are currently widely used for charging portable devices such as mobile phones, mobile power supplies, and notebook computers. Traditional fast charging circuits use an AC-DC module to supply power to multiple electrical devices, but the output voltage of an AC-DC module cannot be adjusted. , can not meet the simultaneous fast charging of various electrical equipment, which reduces the charging speed of the charging circuit, and each electrical equipment cannot be in the best charging state. At the same time, the traditional fast charging circuit uses many devices and high cost. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a multi-channel charging circu...

AI Technical Summary

Problems solved by technology

[0002] Fast charging circuits are currently widely used for charging portable devices such as mobile phones, mobile power supplies, and notebook computers. Traditional fast charging circuits use an AC-DC module to supply power to multiple electrical devices, but the output voltage of an AC-DC module cannot be adjusted. , can not meet the simultaneous fast charging of various electrical equipment, which reduces the charging speed of the charging circuit, and each electrical equipment cannot be in the best charging state

At the same time, the traditional fast charging circuit uses many devices and high cost

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