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A power supply device, method and system based on differential communication interface

A technology of power supply device and communication interface, applied in the direction of logic circuit connection/interface layout, transmission system, electrical components, etc., can solve the problems of inability to widely apply equipment, increase in cost, increase in the number of core wires, etc., and improve the ability of external power supply Effect

Active Publication Date: 2019-02-12
HISENSE BROADBAND MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, it also brings many problems. For example, the number of core wires has increased significantly, resulting in a significant increase in cost. In addition, as the USB interface is widely used in communication products such as personal computers and mobile terminals, the USB typeC interface is subject to standards, interface size and other reasons. , cannot be widely applied to existing equipment

Method used

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  • A power supply device, method and system based on differential communication interface
  • A power supply device, method and system based on differential communication interface
  • A power supply device, method and system based on differential communication interface

Examples

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Embodiment 1

[0030] refer to figure 1 , shows a power supply method based on a differential communication interface according to Embodiment 1 of the present invention, which is used for a power supply device, and the power supply device includes a power signal line and a signal line connected between a differential signal pin and the differential communication interface A differential signal line, the differential signal line is used to transmit a differential signal, the method may specifically include the following steps:

[0031] Step 101, the power supply control module receives the power supply control information transmitted through the power signal line, and generates a control signal according to the power supply control information.

[0032] As known to those skilled in the art, differential transmission is a signal transmission technology. Each differential signal line includes two branches, which is different from a traditional signal line. Differential transmission transmits si...

Embodiment 2

[0052] refer to image 3 , is a partial step diagram of a power supply method based on a differential communication interface in Embodiment 2 of the present invention. The difference from Embodiment 1 is that this embodiment further includes the following steps after step 103 .

[0053] Step 301 , filtering out the second DC voltage signal on the differential signal line between the differential signal pin and the output terminal of the DC power supply module.

[0054] Such as figure 2 As shown, the DC blocking capacitor is set on the differential signal line, and the two ends are respectively connected to the differential signal pins SP, SN and the output end of the DC power supply module. It should be noted that since the output of the differential signal pins SP and SN is For alternating current, step 301 can avoid the influence of the direct current output on the alternating current output.

[0055] Step 302, filter the differential signal on the differential signal lin...

Embodiment 3

[0062] refer to figure 2 , this embodiment provides a power supply device based on a differential communication interface, including a power signal line and a differential signal line connected between a differential signal pin and the differential communication interface, and the differential signal line is used to transmit differential signal, also included.

[0063] A power supply control module, the power supply control module is communicatively connected to the power signal line, and is used to receive power supply control information transmitted through the power signal line, and generate a control signal according to the power supply control information

[0064] The DC power supply module is configured to obtain a first DC voltage signal from the power signal line, and convert the first DC voltage signal into a second DC voltage signal according to the control signal.

[0065] The DC power supply module is also used to transmit the second DC voltage signal to the diff...

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Abstract

The present invention provides a power supply device, method and system based on a differential communication interface. The power supply control module receives the power supply control information transmitted through the power supply signal line, and generates a control signal according to the power supply control information; the DC power supply module obtains the first power supply control information from the power supply signal line. A DC voltage signal, convert the first DC voltage signal into a second DC voltage signal according to the control signal; then transmit the second DC voltage signal to the differential signal line; after the second DC voltage signal is superimposed on the differential signal on the differential signal line Output to the differential type communication interface. Compared with the prior art, the present invention only needs to add a power supply control module and a DC power supply module on the side of the power supply device, and the original structure of the differential communication interface does not need to be changed, so that it can adapt to the current common interface size. Under the control of the power supply control module, the DC power supply module transmits DC power through the differential communication signal line, so as to improve the external power supply capability of the differential communication interface.

Description

technical field [0001] The invention relates to the field of power supply, in particular to a power supply device, method and system based on a differential communication interface. Background technique [0002] More and more devices begin to support external power supply through the data interface. Take the widely used USB interface as an example, which consists of four cables: VBUS, D+, D-, and GND. Among them, D+ and D- are differential communication interfaces, VBUS and GND are used as power supply circuits to provide 5V power for external devices, and the supply current is limited to 1A. The existing power supply devices based on differential communication interfaces have weak external power supply capabilities. [0003] At present, the USB typeC interface is used to increase the power supply. Different from the traditional USB interface, this interface provides 4 sets of power supply core wires, the voltage can be increased to 20V, and the power supply can reach up to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/10H04L29/10H03K19/0175
CPCH03K19/0175H04L12/10H04L69/32
Inventor 王文明石新利李秀宇曹长江
Owner HISENSE BROADBAND MULTIMEDIA TECH