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load protection circuit

A load protection circuit and circuit technology, applied to electrical components, output power conversion devices, etc., can solve problems such as MOS tube burnout, and achieve the effect of ensuring safety

Active Publication Date: 2021-06-29
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the MOS tube works under a certain working current, there is a safe working time. For example, the safe working time of the MOS tube is 1ms under the current of 80A, and the safe working time of the MOS tube is 10ms under the current of 20A.
When the current duration required by the load exceeds the safe working time of the MOS tube, the MOS tube may be burned out

Method used

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0033] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not...

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Abstract

The present application provides a load protection circuit, the circuit includes: a timing module, a control module and at least two switching tubes; wherein: the timing module is used to perform timing operations on the working hours of the currently working switching tubes, if the working hours are equal to Preset the safe working time, then generate a control command to close the current working switch tube, and generate a control command to open any switch tube except the current working switch tube at the same time; send the control command to the control module; the control module uses The method is to obtain a control instruction, and control a switch of a corresponding switch tube based on the control instruction. A timing module is set in the circuit to time the working time of the currently working switch tube. When the timed working time is equal to the preset safe working time, another switch tube is switched to work. In this way, the safety of the MOS tube can be guaranteed. It can provide the electrical parameters required for stability to the load.

Description

technical field [0001] The present application relates to the technical field of circuit design, in particular to a load protection circuit. Background technique [0002] There are some components in the server (such as CPU, memory, GPU, and hard disk, etc.), which have requirements on the electrical parameters of the power supply, that is, the current required by the power supply and the duration of the current can meet the requirements of such components ( For example, the 80A current is maintained for 3ms, etc.) to ensure the normal operation of such components. [0003] At present, there is a current regulation method, which regulates the output current of the power supply through the load protection circuit to meet the current required by the load and the duration of the current; specifically, there are at least two MOS in the protection circuit tube, and a control pin of the control module controls the opening and closing of each MOS tube. After the current of each MO...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/088H02M1/32
CPCH02M1/088H02M1/32
Inventor 苏敬喆
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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