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A design method of server power pwm fan control

A technology for fans and power supplies, applied in pump control, mechanical equipment, machines/engines, etc., can solve the problems of temperature change at full rotation of the power-on fan, small fan speed, abnormal increase, etc., to achieve high reliability, solve power supply heat dissipation, The method is clear and simple

Active Publication Date: 2017-03-08
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The heat dissipation of power supply has always been a concern of the market. Many power supplies have problems such as full rotation of the electric fan or abnormal increase in fan speed with small temperature changes.

Method used

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  • A design method of server power pwm fan control
  • A design method of server power pwm fan control
  • A design method of server power pwm fan control

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Embodiment Construction

[0024] The content of the present invention is described in more detail below:

[0025] The control diagram is as figure 1 As shown, among them, "Temperature Voltage" is the voltage value measured by the thermistor terminal, "IIN CURRENT" is the current value of the AC input terminal of the power supply, and "I2C Command" is the function of controlling the fan speed through PMBus commands.

[0026] After the power module is turned on, the speed will be controlled according to the temperature control curve or current curve. If the temperature of the secondary side and the primary side are both lower than 25°C and the input current is lower than 1A when starting up, the fan speed is about 1800RPM. The fan speed will increase linearly with temperature rise or input current increase.

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the acco...

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Abstract

The invention provides a design method for server power supply PWM fan control, which belongs to the field of server power fan control design methods. The invention uses a 4-wire PWM fan, that is, a frequency feedback signal line FG with a PWM input signal line to control the speed and speed. Interface with MCU to realize temperature control of fan speed and directly notify MCU to set speed control through I2C interface. It can make the server power supply more reliable.

Description

technical field [0001] The invention relates to a design method and technology for server power fan control, in particular to a design method for server power PWM fan control. Background technique [0002] With the rapid development of the Internet economy, the status of servers has been significantly improved. In order to pursue the reliability of server power supply, in addition to using UPS and other equipment for power supply, customers or power supply manufacturers are also actively seeking breakthroughs in the power supply itself. [0003] There is a redundant design, which is what everyone calls redundant power supply. Redundant power supply is a kind of power supply commonly used in servers at present. It is composed of two identical power supply modules, and the chip controls the power supply for load balancing. When a power module fails, another power module can take over its work immediately, and after the power supply is replaced, the two power modules work toget...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
CPCF04D27/00
Inventor 高鹏飞肖波滕学军谷俊杰
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD