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Circuit system and electronic fuse circuit thereof

A fuse and circuit technology, applied in the field of circuit design, can solve the problems of electronic circuit load increase and damage, etc., and achieve the effect of solving the problem of equipment damage

Pending Publication Date: 2021-06-15
无锡赛米垦拓微电子股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, when an abnormal direct connection occurs between two electrical terminals, a current far greater than the rated value will flow, causing a sharp increase in the load of the electronic circuit and causing damage

Method used

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  • Circuit system and electronic fuse circuit thereof
  • Circuit system and electronic fuse circuit thereof
  • Circuit system and electronic fuse circuit thereof

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly.

[0022] Please refer to figure 1 As shown, it is a schematic circuit diagram of a circuit system in an embodiment of the present invention. figure 1 The illustrated circui...

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Abstract

The invention provides a circuit system and an electronic fuse circuit thereof. The electronic fuse circuit comprises a switch, wherein a first connection end of the switch is connected with a voltage source, and a second connection end of the switch is connected with a power supply end (A) of an electronic circuit; a first resistor (R1) connected in series with the switch between the voltage source and the power supply end (A) of the electronic circuit, or a first resistor (R1) connected between a grounding end (B) of the electronic circuit (200) and a grounding node; and a comparator, wherein a first input end of the comparator receives voltage representing the voltage drop on the first resistor (R1), a second input end of the comparator is connected with reference voltage, an output end of the comparator is connected with the control end of the switch, and the comparator is used for comparing the voltage representing the voltage drop on the first resistor (R1) with the reference voltage, and outputting a corresponding control signal through the output end based on the comparison result so as to control the on or off of the switch. Compared with the prior art, the circuit system and the electronic fuse circuit thereof are used for solving the problem of equipment damage caused by short circuit between two electrical endpoints in an electronic circuit.

Description

【Technical field】 [0001] The invention relates to the technical field of circuit design, in particular to a circuit system and an electronic fuse circuit thereof. 【Background technique】 [0002] Short-circuit fault is a kind of fault that often occurs when electronic circuit products are running, which is caused by the user's wrong use of the product or accidental connection. Usually, when an abnormal direct connection occurs between two electrical terminals, a current far greater than the rated value will flow, causing a sharp increase in the load of the electronic circuit and causing damage. [0003] Therefore, it is necessary to propose a new type of electronic fuse circuit to solve the above short circuit protection problem. 【Content of invention】 [0004] One of the objectives of the present invention is to provide a circuit system and an electronic fuse circuit thereof, which are used to solve the problem of equipment damage caused by a short circuit between two ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08
CPCH02H3/08
Inventor 李国宏丁毅岭孙旭涛朱信阳
Owner 无锡赛米垦拓微电子股份有限公司
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