Active cable capable of avoiding influence of RX power consumption

Abstract

An active cable capable of avoiding RX power consumption influence comprises a host connecting end, an equipment connecting end, and a data line and auxiliary lines which are located between the host connecting end and the equipment connecting end. The auxiliary lines comprise a main power line and an auxiliary power line. The main power line is used for transmitting a current between a host and a VBUS of equipment. One end of the auxiliary power line is located at the host connecting end and connected with the main power line, and the other end is located at the equipment connecting end and supplies power to an active device of the equipment connecting end. According to the invention, an active module at the equipment connecting end is disconnected from the VBUS, and an additional auxiliary power line is led out from the host connecting end to supply power to the active module at the equipment connecting end, so that the risk that the voltage drop on the VBUS exceeds the standard is solved, and the problems of appearance and flexibility caused by the fact that the VBUS is thick are reduced. A power module is arranged between the active device and the auxiliary power line, so that different voltage requirements can be met.

Description

technical field [0001] The present invention relates to the field of active cables, and in particular, relates to an active cable that avoids RX power consumption to affect factors such as the voltage drop of the active cable and the thickness of the cable. Background technique [0002] With the development of high-speed wireless network, high-speed USB, and high-definition video, cables such as USB, HDMI, DP, and Type C are becoming more and more common. [0003] Taking the USB cable as an example, the USB cable is used for connection and communication between a computer and an external device, and can also be used for charging the device and connecting with the outside. In layman's terms, it is used to transmit data and charge. [0004] USB3.0 was announced on November 18, 2008 by the U promotion group composed of industry giants such as Intel, Microsoft, Hewlett-Packard, Texas Instruments, NEC, and ST-NXP, that it had officially completed and publicly released the USB3.0...

AI Technical Summary

Problems solved by technology

When the cable 100 transmits current (power supply to the device), the active devices 7 respectively located at the host connection end 3 and the device connection end directly get power from the VBUS through the power line 5, so the actual value of the current transmitted on the VBUS will be larger. This creates the risk of a voltage drop on VBUS exceeding that specified by the protocol

In order to make the voltage drop on the VBUS of the active cable not exceed the agreement, the general measure is to make the VBUS copper wire very thick, so that the cable is not soft enough and feels hard to the touch.

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