Power regulation method based on usb Type-C interface circuit and its circuit, electronic equipment

Abstract

The invention relates to the technical field of USB interface, and discloses a power adjustment method based on a USB Type-C interface circuit, its circuit, and electronic equipment. Wherein, the method includes: obtaining the Nth first actual output power applied to the first Type-C port; adjusting the Nth first broadcast power and the Nth first broadcast power according to the Nth first actual output power and the preset maximum power The second broadcast power of the N-1th time, each first broadcast power is the output power broadcast by the USB Type-C interface circuit to the first load through the first Type-C port, and each second broadcast power is USB Type-C Output power broadcast by the interface circuit to the second load through the second Type-C port. With this method, when both the first Type-C port and the second Type-C port are connected to the load, it can flexibly adjust the broadcast power corresponding to the first Type-C port and the second Type-C port in order to maximize purpose of using power.

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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