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Communication isolation circuit and device

A technology for isolating circuits and communication, applied in logic circuit interface devices, logic circuit connection/interface layout, electrical digital data processing, etc., can solve problems affecting the normal communication of the system, achieve simple and fast mutual isolation and independent operation, and improve reliability performance, solve the effect of reliability decline

Pending Publication Date: 2022-03-11
SHENZHEN HONOR ELECTRONICS
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AI Technical Summary

Problems solved by technology

[0009] In the server power supply, in order to be better compatible with the system work and flexible adjustment and control, the power supply end must use I2C communication to report and read information with the system, and respond to the corresponding instructions, but if the power supply occurs failure, it will affect the normal communication of the system

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Embodiment Construction

[0038] In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the application and their descriptions are used to explain the application, but not to limit the application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0039] In the server power supply, in order to be more compatible with the system work and flexible adjustment and control, the power supply end must use I2C communication to report and read information with the system, and respond to the corresponding commands.

[0040] The traditional I2C communication circuit scheme such as figure 1 , SDA and SCL are pulled up to 3.3V by 10KΩ resistors R11 and R14 r...

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Abstract

The invention provides a communication isolation circuit and device, and the isolation circuit comprises a communication processor which comprises two communication signal terminals and a power supply terminal; and the two communication signal input ends are respectively, independently and correspondingly coupled with a communication signal terminal and are used for inputting a communication signal, a power supply and the isolation module. According to the invention, by arranging the isolation module, when the power supply fails, the signal input from each communication signal input end to the corresponding communication signal terminal is cut off, so that the problem that the reliability of the redundant power supply is reduced due to the fact that the traditional I2C communication signal is not isolated is solved; mutual isolation and independent operation of the power supply modules on the I2C communication line are simply and quickly realized, the situation that communication of other power supply modules is in failure due to the communication problem of a single power supply is avoided, and the reliability of the whole redundant work is improved.

Description

technical field [0001] The present application relates to the field of communication isolation circuits, in particular to a communication isolation circuit and a device. Background technique [0002] The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus used for communication in the electronics industry. It is mainly used for information transmission connecting microcontrollers and their peripherals. The I2C bus was born in the 1980s, originally developed for audio and video equipment, and is now used in both switching power supplies and system servers, including communication of single and multiple power module states. For example, administrators can query each power module to manage system configuration or grasp the functional status of components, such as the output voltage of the power supply and the fan speed of the system. And it can monitor the input and output of switching power supply, fan speed and temperature and other parameters at any time, which incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40H03K19/0175
CPCG06F13/4068H03K19/017509G06F2213/0016Y02D10/00
Inventor 陈月华李秀楼王越天
Owner SHENZHEN HONOR ELECTRONICS
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