Flyback noise reduction power supply module

A power module, flyback technology, applied in electrical components, adjusting electrical variables, instruments, etc., can solve the problems of narrow operating voltage range, high noise, unstable operation, etc., to increase the operating voltage range, reduce input noise, Solve the effect of large input noise

Inactive Publication Date: 2019-07-09
西安鲲创科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the power modules produced by domestic mainstream power supply manufacturers lack effective linear voltage regulator circuits and input filter circuits, resulting in problems such as very narrow operating voltage range, unstable operation, and large noise in power modules.

Method used

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  • Flyback noise reduction power supply module
  • Flyback noise reduction power supply module
  • Flyback noise reduction power supply module

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Embodiment Construction

[0020] The following will combine figure 1 , figure 2 , image 3 , Figure 4 The present invention will be described in detail.

[0021] Such as figure 1 As shown, a flyback noise reduction power module includes an input filter circuit 1, a power switch circuit 2, an output filter circuit 3, a feedback circuit 4, a main control circuit 5 and a linear voltage regulator circuit 6, and the external input terminal 7 passes through the The input filter circuit 1, the power switch circuit 2 and the output filter circuit 3 are connected to the external output terminal 8, the input terminal 7 is connected to the main control circuit 5 through the linear voltage stabilizing circuit 6, and the main control circuit 5 is respectively connected to the The power switch circuit 2 is connected to the feedback circuit 4, the feedback circuit 4 is connected to the output filter circuit 3, and the power switch circuit 2 includes a first transformer T1 and a second transformer T2;

[0022] ...

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Abstract

The invention provides a flyback noise reduction power supply module, and belongs to the technical field of power electronics. The power supply module comprises an input filter circuit, a power switchcircuit, an output filter circuit, a feedback circuit, a main control circuit and a linear voltage stabilization circuit; an external input end sequentially passes through the input filter circuit, the power switch circuit and the output filter circuit to be connected with an external output end; the input end is connected with the main control circuit through the linear voltage stabilization circuit; the main control circuit is connected with the power switch circuit and the feedback circuit separately; the feedback circuit is connected with the output filter circuit; and the power switch circuit comprises a first transformer and a second transformer. By using a common mode inductor and the linear voltage stabilization circuit, the input noise of the power module is effectively reduced,the working voltage range of the power supply module is expanded, and the problems that the input noise is large, the input voltage range is narrow and the like of the power supply module are solved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a flyback noise reduction power supply module. Background technique [0002] Along with the more and more widespread application of switching power supplies, the requirements for the performance and working stability of switching power supplies are getting higher and higher. In the prior art, the power modules produced by domestic mainstream power supply manufacturers lack effective linear voltage regulator circuits and input filter circuits, resulting in problems such as very narrow operating voltage range, unstable operation, and large noise in power modules. Contents of the invention [0003] In view of this, the present invention provides a flyback noise-reducing power module, which has a simple structure and stable operation. By setting a linear voltage regulator circuit and an input filter circuit, the working noise of the power module is reduced, and the input ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/44
CPCH02M1/44H02M3/33569
Inventor 范雨鸽
Owner 西安鲲创科技发展有限公司
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