Multi-channel charging circuit and its protocol control module and control method

Abstract

The application discloses a multi-channel charging circuit, comprising: a first-stage power converter, which converts an AC input voltage into a DC power supply voltage; a plurality of second-stage power converters, which are connected to the first-stage power converter and convert the DC power The power supply voltage is converted into a plurality of charging voltages; a plurality of charging ports are respectively connected with a plurality of second-stage power converters to charge the electrical equipment; and the protocol control module is based on the plurality of charging ports. The protocol parameters generate a first control signal to regulate the DC supply voltage, and a plurality of second stage power converter control signals to regulate a plurality of charging voltages. The protocol control module of the multi-channel charging circuit supports protocol communication and analysis of multiple charging ports, obtains the DC power supply voltage reference value according to the protocol parameters, and provides respective control signals to multiple second-stage power converters, so as to flexibly adjust the DC power supply. voltage, thereby supporting independent control of multiple powered devices and simultaneous fast charging.

Description

technical field [0001] The present invention relates to power supply technology, and more particularly, to a multi-channel charging circuit for fast charging and a protocol control module and control method thereof. Background technique [0002] The fast charging circuit is currently widely used in the charging of portable devices such as mobile phones, mobile power supplies, and notebook computers. The traditional fast charging circuit uses an AC-DC module to supply power to multiple electrical devices, but the output voltage of an AC-DC module cannot be adjusted. , it can not meet the fast charging of various electrical equipment at the same time, 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 adopts many devices and high cost. SUMMARY OF THE INVENTION [0003] In view of the above problems, the purpose of the present invention is to pro...

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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