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Method and circuit for improving efficiency of power factor correction circuit of server power supply

A technology of power supply and correction circuit, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., and can solve the problem of high turn-off loss

Inactive Publication Date: 2017-07-25
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Application Information

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Problems solved by technology

[0002] At present, the global energy problem is becoming more and more serious. In my country, the problem of power consumption is becoming more and more important. Servers have higher and higher requirements for power supply efficiency specifications. To solve the problem of power supply efficiency, the DC_DC part of the switching power supply topology has changed from hard switching to Soft switching, the current method for developers and designers to improve power supply efficiency is mainly reflected in the improvement of device performance. At present, engineers mostly rely on the efficiency improvement brought about by device parameter optimization, and there are very few modifications to the power supply topology. In addition, In the prior art, the diodes are all connected at the same end of the rectifier, and the turn-off loss is high

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  • Method and circuit for improving efficiency of power factor correction circuit of server power supply
  • Method and circuit for improving efficiency of power factor correction circuit of server power supply

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Embodiment Construction

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

[0020] The invention provides a method for improving the efficiency of the power factor correction circuit of the server power supply, the connection method is as attached figure 1 shown, including:

[0021] The inductor is connected to an AC input terminal of the rectifier BR2, the other AC input terminal of the rectifier BR2 is grounded, the positive AC output terminal of the rectifier BR2 is connected to the drain of the triode Q21 and the fifth diode D25, and the negative AC output terminal of the rectifier BR2 is The...

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Abstract

The invention proposes a method and circuit for improving the efficiency of a power factor correction circuit of a server power supply. A topological design is introduced to a service power supply, and the connection mode and position of a diode is improved. A diode and a triode are connected to the same end of a rectifier, and a conventional current path is changed, thereby effectively improving the efficiency of the server power supply, improving the quality of a product and improving the competiveness of the product.

Description

technical field [0001] The invention relates to the technical field of server power supply, in particular to a method and circuit for improving the efficiency of a server power supply power factor correction circuit. Background technique [0002] At present, the global energy problem is becoming more and more serious. In my country, the problem of power consumption is becoming more and more important. Servers have higher and higher requirements for power supply efficiency specifications. To solve the problem of power supply efficiency, the DC_DC part of the switching power supply topology has changed from hard switching to Soft switching, the current method for developers and designers to improve power supply efficiency is mainly reflected in the improvement of device performance. At present, engineers mostly rely on the efficiency improvement brought about by device parameter optimization, and there are very few modifications to the power supply topology. In addition, In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42
CPCH02M1/4208Y02B70/10
Inventor 高鹏飞滕学军肖波李松磊张洪镇
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD