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Self-recovery method of hot plug fan

A self-recovery, hot-swappable technology, used in data processing power supplies, measuring devices, instruments, etc., can solve problems such as system reliability reduction, and achieve the effect of improving stability, strengthening fan hot-swapping function, and improving reliability.

Active Publication Date: 2018-09-04
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the fan is working normally, the current remains at a stable value, but when hot plugging, the fan current will increase exponentially, causing efuse to trigger protection and stop the fan from working, so the system will lack a fan, which will affect the reliability of the system. Greatly reduced

Method used

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  • Self-recovery method of hot plug fan

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Embodiment Construction

[0015] The content of the present invention is described in more detail below:

[0016] The present invention mainly utilizes CPLD to judge the fan hot-swapping process, the fan speed detection and the operation of starting the fan. Among them, EFUSE is the protection chip of the fan circuit, and CPLD is the control chip, which mainly controls the opening and closing of EFUSE, and detects the position information and speed information of the fan. P12V supplies power for the external power supply. P12V_FAN is the power supply of the fan after passing through EFUSE, FAN_CONN is the fan connector, EFUSE_EN is the switch signal of the fan circuit protection chip, the high level turns on EFUSE, and the low level turns off EFUSE. The FAN_TECH signal is the fan speed output signal, when the fan starts to rotate , the signal changes from high to low, otherwise it is always low. The FAN_PRSNT signal is the fan presence signal, when the fan is present, the signal is low, and when the ...

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Abstract

The invention provides a self-recovery method of a hot plug fan, and belongs to the technical field of hot plug. In the hot plug process of the fan, the fan is plugged and then powered on through an EFUSE, and the problem of current overshoot in the process of plugging and unplugging the fan is effectively solved. By means of the method, the hot plug operation on the fan of a server system can beeffectively protected, and the stability of a server is improved.

Description

technical field [0001] The invention relates to the hot-plug technology, in particular to a self-recovery method for a hot-plug fan. Background technique [0002] At present, in the server field, although the heat resistance of each module inside the server has been greatly improved, it has always been an indispensable link in the server to use fans to cool down key components. When the server is working normally, the system will adjust the speed according to the temperature at that position detected by each temperature detection chip inside the server. Server fans generally support redundancy. In the case of fan body failure, hot-swappable fans are required for replacement. In order to prevent excessive fan current, efuse is generally added to the fan power supply end for protection. In the case of excessive load current, the fan power supply is disconnected, thereby preventing the failure of the entire system. When the fan is working normally, the current remains at a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/20G06F1/26G06F1/30
CPCG06F1/20G06F1/266G06F1/305
Inventor 梁超慈潭龙
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD