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A load switch integrated circuit and electronic equipment

A technology of integrated circuits and load switches, which is applied to circuits, electronic switches, circuit devices, etc., and can solve problems such as large circuit areas

Active Publication Date: 2019-05-10
SHANGHAI AWINIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a load switch integrated circuit and electronic equipment to solve the problem of large circuit area in the prior art

Method used

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  • A load switch integrated circuit and electronic equipment
  • A load switch integrated circuit and electronic equipment
  • A load switch integrated circuit and electronic equipment

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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 creative efforts fall within the protection scope of this application.

[0033] The invention provides a load switch integrated circuit to solve the problem of large circuit area in the prior art.

[0034] Specifically, see image 3 , the load switch integrated circuit includes: a first switch tube M1, a surge detection circuit 101, a control circuit 102, a first discharge unit 103 and a second discharge unit 104; wherein:

[0035] The input terminal of the first switching tube M1, the input terminal of the surge detection circuit 101 and the input terminal of ...

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Abstract

The present invention provides a load switch integrated circuit and electronic equipment. When a surge voltage appears at the input end of the load switch integrated circuit, its surge detection circuit controls the first discharge unit to turn on, so that the input end of the load switch integrated circuit The energy is discharged to the ground, and at the same time, the control circuit controls the first switch tube and the second discharge unit to be turned on, so as to discharge the energy of the output end of the load switch integrated circuit to the ground; that is, compared with the prior art, only When the surge energy is discharged through the surge protection circuit, the invention divides the surge energy to be resisted into two paths for discharge. When the surge energy to be resisted is large, the circuit area is obviously smaller than that of the prior art.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a load switch integrated circuit and electronic equipment. Background technique [0002] Surge voltage is an instantaneous overvoltage exceeding the normal working voltage, and its generation time is very short, usually in the order of microseconds. When a surge occurs, the magnitude of the voltage and current may be many times the normal value. When it exceeds the capacity of the device, it will directly burn the device, and the cumulative effect of multiple small surges will also lead to the degradation of the performance of the semiconductor device. shorten its lifespan. [0003] In the prior art, the load switch integrated circuit is generally arranged in the front stage of the circuit to be protected; the load switch integrated circuit is such as figure 1 As shown, when a surge occurs, the gate control circuit controls the main switching tube M1 to turn off, so a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04H02H1/00
CPCH02H1/0007H02H9/046H02H9/041H02M3/07H03K17/0822H03K17/6871
Inventor 程剑涛罗旭程胡建伟
Owner SHANGHAI AWINIC TECH CO LTD