Concentrator with USB differential shielding wiring and power module independent layout

Abstract

The invention discloses a concentrator with USB differential shielding wiring and power module independent layout. The concentrator comprises an HSD connector, an HUB chip, a first USB interface, a second USB interface, a BAT + connector, an EMI filter and a DC-DC module, and a PCB board. The HSD connector is connected with the HUB chip through USB differential shielding wiring, and one uplink port of the HUB chip corresponds to a group of USB differential shielding wires D1 + and D1-of the HSD connector; one uplink port of the HUB chip is connected with the HSD connector through USB differential shielding wiring, and the D1 + _ Type C and the D1-_ Type C of one downlink port of the HUB chip are connected with the first USB interface through USB differential shielding wiring, and one uplink OTG of the HUB chip corresponds to D2 + and D2-one group of USB differential shielding wires of the HSD connector. According to the invention, different module circuits are independent of each otherand do not interfere with each other, electromagnetic radiation of the different module circuits is greatly reduced, higher anti-interference performance can be provided, and the characteristic requirements of the different module circuits are met.

Description

technical field [0001] The invention relates to the technical field of automotive electronic products, in particular to a hub with USB differential shielding wiring and independent layout of power supply modules. Background technique [0002] At present, digital circuits are widely used because of their strong signal anti-interference ability, easy standardization, and simple circuit structure. When digital circuits and analog circuits are integrated and used, some unnecessary interference will appear. Although digital circuits have strong anti-interference, if the energy level of interference is too large, bit errors in communication data transmission will also occur, distorting the real signal in channel transmission, resulting in unreliable signal transmission. For example, in a car, when the user's device communicates with the car host through the USB data cable, the main phenomena are packet loss and high bit error rate. What's more, it will lead to the disorder of the...

AI Technical Summary

Problems solved by technology

Although digital circuits have strong anti-interference, if the energy level of interference is too large, there will be errors in communication data transmission, which will distort the real signal in channel transmission, resulting in unreliable signal transmission

For example, in a car, when the user's device communicates with the car host through the USB data cable, the main phenomena are packet loss and high bit error rate. What's more, it will lead to the disorder of the logic function, and the result cannot realize the intended function, causing user complaints and dissatisfaction

[0003] On the other hand, in the current design of analog and digital circuits, there are introductions about the relationship between analog circuits and digital circuits, or switching power supplies and other digital and analog circuits, as well as design and application examples, and the requirements between functional modules are given. The general general direction of separate processing, but in practical applications, there will also be problems of mutual interference between different characteristic circuits, resulting in the inability of the characteristic circuits to work stably for a long time, and the system can operate reliably under harsher conditions

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