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Method for determining weak link of DC-DC power supply module based on FSR method

A DC-DC and power module technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as accurate weak links and difficulties, and achieve the effects of easy operation, precise positioning, and improved reliability

Pending Publication Date: 2022-01-07
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] With the wide application of DC-DC power modules in different fields, its life extension work has higher and higher requirements for determining weak links, and it is more difficult to obtain accurate weak links using traditional methods

Method used

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  • Method for determining weak link of DC-DC power supply module based on FSR method
  • Method for determining weak link of DC-DC power supply module based on FSR method
  • Method for determining weak link of DC-DC power supply module based on FSR method

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Embodiment Construction

[0110] The method for determining the weak link described in the present invention takes SFLP-030-1H as an example. Combined with specific actual cases, a method for determining the weak link of a DC-DC power module based on the FSR method in the present invention will be described in detail.

[0111] The present invention proposes a method for determining the weak link of a DC-DC power supply module based on the FSR method, the flow chart of which is as follows figure 1 As shown, the specific implementation steps are as follows:

[0112] Step 1: Select the DC-DC power module SFLP-030-1H as the research object, its working principle and structure are as follows figure 2 As shown, the specific parameters are shown in Table 1. The important research parameters of the DC-DC power supply module, output voltage and ripple voltage, are selected for research. The PCB board diagram is shown in image 3 As shown, the composition of internal components is shown in Table 2;

[0113] ...

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Abstract

The invention provides a method for determining weak links of a DC-DC power supply module based on an FSR method. The method comprises the following steps: 1, selecting the DC-DC power supply module, analyzing a working principle and an internal structure, determining important research parameters, and exploring the composition of internal components; 2, investigating and summarizing failure modes and failure mechanisms of internal components, forming an FMEA table, and obtaining theoretical weak links; 3, modeling and simulation software is determined, and modeling the data according to the simplification principle; 4, giving out parameters and characteristics of each material, calculating the power of a main heating device, and giving out a simulated load applying condition; 5, carrying out finite element simulation and analysis; 6, carrying out reliability strengthening test design; 7, building a test platform; 8, carrying out data analysis and weak link analysis. Through the above steps, the weak link of the DC-DC power supply module can be accurately positioned by using the FSR method; in this way, a basis for improving the reliability of the device is provided for device designers, and powerful support is provided for the service life prolonging work of the device.

Description

(1) Technical field: [0001] The invention provides a method for determining a weak link of a DC-DC power supply module based on an FSR method, and relates to a method for locating a weak link of a power supply module. It is mainly aimed at the actual demand of determining the shortest-lived part when the product is stored for life extension, and designs a method for determining the internal weak link of the complex product as a whole, which belongs to the technical field of failure analysis. (2) Background technology [0002] Life parameters are a very important part of reliability parameters, and there are a large number of life evaluation requirements in newly developed equipment and in-service equipment. For a long time, the subject of high reliability and long life evaluation (such as wear life, corrosion life, storage life, etc.) has been a technical problem faced by the field of equipment reliability engineering. DC-DC (DC-DC conversion) power module is a switching po...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F119/02
CPCG06F30/23G06F2119/02
Inventor 高成雷鑫黄姣英
Owner BEIHANG UNIV
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