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A protection system for power board

A protection system and power technology, applied in the protection system field of power boards, can solve the problems of not being able to truly reflect the power of power boards, the influence of power tube testing, and low accuracy, so as to achieve speed reduction, timely protection, and avoid The effect of false protection

Active Publication Date: 2020-08-21
佛山市联动科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the execution accuracy of this method is not high, and it cannot truly reflect the power status of the current power board. It is often prone to false protection and false action, which will affect the power tube test.

Method used

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  • A protection system for power board
  • A protection system for power board

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Embodiment Construction

[0030] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection / connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting wi...

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Abstract

The invention discloses a protection system for a power board, comprising: a power supply module, provided with an electric energy output end, the electric energy output end is connected with the power supply end of the power board card, and the electric energy output end is used to output the first voltage and A second voltage, the second voltage is lower than the first voltage; the power board is used to provide a test voltage and a test current to the power tube, and the test voltage is applied between the drain and source of the power tube, so The test current flows through the drain-source of the power tube; the protection system also includes: when the first voltage acts on the power supply terminal of the power board, then: obtain the real-time output current and real-time output voltage of the power board; Calculate the real-time output power of the power board from the real-time output current and real-time output voltage; calculate the power cumulative value, and when the power cumulative value ≥ the power cumulative value threshold, switch the output voltage of the electric energy output terminal to the second Voltage. This protection system is mainly used for protection work during testing.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a protection system for power boards. Background technique [0002] The power board is a device that provides test current and test voltage to the device under test (DUT). When testing the on-resistance of the power tube, the power board is used to provide the power tube with a test voltage and a test current, the test voltage is applied between the drain and source of the power tube, and the test current flows through the power tube the drain source. For this reason, when the power tube is tested, when the output power of the power board is too large, it will cause danger to the power tube. The existing method is generally to measure the output current and output voltage of the power board, calculate the real-time output power of the power board according to the output current and output voltage, compare the real-time output power with the preset threshold, and when the real-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/00G01R1/36
CPCG01R1/36H02H9/00
Inventor 谷颜秋
Owner 佛山市联动科技股份有限公司
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