Power regulation method based on USB Type-C interface circuit, circuit thereof and electronic equipment

Abstract

The invention relates to the technical field of USB interfaces, and discloses a power regulation method based on a USB Type-C interface circuit, a circuit thereof and electronic equipment. The methodcomprises the following steps: acquiring Nth first actual output power applied to a first Type-C port; according to the Nth-time first actual output power and the preset maximum power, obtaining the Nth-time first actual output power, adjusting the (N-1) th first broadcast power and the (N-1) th second broadcast power, wherein the first broadcast power is output power broadcasted to the first loadby the USB Type-C interface circuit through the first Type-C port each time, and the second broadcast power is output power broadcasted to the second load by the USB Type-C interface circuit throughthe second Type-C port each time. By adoption of the method, when the first Type-C port and the second Type-C port are both connected with the load, the broadcast power corresponding to the first Type-C port and the second Type-C port can be flexibly adjusted, so that the purpose of maximizing the use power is achieved.

Description

technical field [0001] The invention relates to the technical field of USB interface, in particular to a power adjustment method based on a USB Type-C interface circuit, its circuit, and electronic equipment. Background technique [0002] USB Type-C, referred to as Type-C for short, is a hardware interface specification of a Universal Serial Bus (USB). Compared with the traditional USB interface, the Type-C interface adopts a thinner design, supports faster transmission speed and stronger power transmission. The Type-C interface supports double-sided insertion, and the USB data cable used with it must also be thinner and lighter. [0003] In order to support the maximum output power of 100W, the matching USB Power Delivery Specification (USB PD) was also launched later. The USB PD protocol can support a current of 3A or 5A, and the output voltage is up to 20V. At the same time, the interface defines a dedicated channel for power transmission protocol communication, which c...

AI Technical Summary

Problems solved by technology

[0004] The traditional USB Type-C interface circuit uses two independent DC converters and two USB controllers, each USB controller is electrically connected to the corresponding DC converter, and each DC converter is electrically connected to the corresponding Type-C port. Two DC converters share one input voltage, and the USB controller adjusts the power output by controlling the corresponding DC converters, so as to output the corresponding power at the corresponding Type-C port. For example, the preset maximum power is 60W. For two Type-C When the C ports are plugged into the load at the same time, it limits the maximum output power of each Type-C port. For example, when the actual output power of one of the Type-C ports is small, such as close to no load, the other Type-C port The port can still only broadcast a maximum power of 30W, which affects the efficiency of the entire power supply

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