Single-port mobile power control circuit and control method thereof

Abstract

The invention discloses a single-port mobile power control circuit and a control method thereof. The circuit comprises a connection port for connecting external equipment, an equipment access detection module, a controller, a voltage detection module, an output control module, an output module, an input control module and an input module; the equipment access detection module is connected between the first input end of the controller and the connection port, and the voltage detection module is connected between the second input end of the controller and a VBUS line and used for detecting voltage on the VBUS line; the first output end of the controller is connected with the input end of the output control module, and the output end of the output control module is connected to the connection port via the output module and the VBUS line in sequence and supplies power to the external equipment via the connection port; the second output end of the controller is connected with the input end of the input control module, the VBUS line is connected with the input end of the input control module via the input module, and the external equipment is charged via the VBUS line.

Description

technical field [0001] The invention relates to the technical field of mobile power supplies, in particular to a single-port mobile power supply control circuit and a control method thereof. Background technique [0002] Today, with the popularity of smart terminals, all terminals are equipped with large-capacity batteries. On the one hand, the terminal is required to have a long battery life, and on the other hand, the terminal is required to be able to output current to the connected electrical equipment at certain times. [0003] Generally speaking, there are three ways to achieve this function. The first method is to use two ports to design the corresponding circuit, one is used to charge itself from an external power supply, and the other is used to supply power to an external load; the second method The method is that the user uses different specially designed data cables with distinction to supply power to the terminal or output current from the terminal; the third me...

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Problems solved by technology

[0004] However, there are unfavorable factors in the three methods provided above. Among them, in the first method, because the terminal design uses two ports, the cost of the terminal will be increased, and it is not conducive to the miniaturization of the terminal, and the portability is poor; The second method requires human judgment on which data cable to use. If the wrong data cable is misused in the charging or external power supply scenario, it will damage the device and increase the cost of materials; and because it corresponds to different data cables, the portability is poor. ; The third method also needs to artificially distinguish the scene where charging will supply power to the outside world, and then place the switch in the corresponding position. If the switch position is selected incorrectly, the judgment will also damage the device, increase material costs, and affect user experience.

[0005] At present, although there are single-port designs on the market, this structure is in a working state regardless of whether it is in use or not in use, which not only causes energy loss, but also has high costs, and it is easy to shorten its service life.

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