Type C connection direction detection circuit and detection method thereof, charging control chip and working method thereof

Abstract

The invention provides a Type C connection direction detection circuit, a detection method thereof, a charging control chip and a working method thereof, the circuit comprises a first CC terminal, a second CC terminal, an access change-over switch, a carrier sensing module and a main controller, the first CC terminal is electrically connected with a first end of the access change-over switch, andthe second CC terminal is electrically connected with a second end of the access change-over switch. The common end of the access change-over switch is electrically connected with the carrier sensingmodule, and the control end of the access change-over switch is electrically connected with the main controller. The main controller is used for sending a path switching signal to the path switching switch and controlling the path between the carrier sensing module and the first CC terminal or the second CC terminal to be conducted; the carrier sensing module is used for detecting an energy signalof the first CC terminal or the second CC terminal and sending a CC direction feedback signal to the main controller. By applying the Type C connection direction detection circuit provided by the invention, Type C connection direction judgment is realized, and the circuit structure is simplified.

Description

technical field [0001] The present invention relates to the technical field of power management, in particular to a TypeC connection direction detection circuit, a TypeC connection direction detection method of the TypeC connection direction detection circuit, and a charging control chip using the TypeC connection direction detection circuit. It relates to the working method of the charging control chip. Background technique [0002] In recent years, with the rapid development of smart phone technology, the TypeC+PD protocol has become the standard configuration for fast charging of major mobile phones, and the matching charging head is equipped with the PD protocol to support high-power charging. [0003] The goal of TypeC interface design is to judge whether TypeC is connected or disconnected, and to determine the direction of TypeC connection. Such as figure 1 As shown, the traditional design of TypeC interface requires comparator 1, deburring module 2 and state machine...

AI Technical Summary

Problems solved by technology

The traditional design of TypeC interface is costly and complicated due to complex logic design such as comparator, deburring, state machine, etc.

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