An active cable avoiding the influence of rx power consumption

Abstract

An active cable that avoids the influence of RX power consumption, including: a host connection end, a device connection end, and a data line and an auxiliary line between the two. The auxiliary line includes a main power line and an auxiliary power line, wherein the main power The auxiliary power line is used to transmit current between the VBUS of the host and the device. One end of the auxiliary power line is connected to the main power line at the host connection end, and the other end is located at the device connection end to supply power to the active devices at the device connection end. The invention disconnects the active module at the device connection end from the VBUS, leads an additional auxiliary power line from the host connection end to supply power to the active module at the device connection end, solves the risk of excessive voltage drop on the VBUS, and reduces the risk of excessive VBUS wires. However, the problems of appearance and flexibility are caused; the present invention also has a power module between the active device and the auxiliary power line, which can thus meet different voltage requirements.

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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