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Smokeless electrostatic discharge protection circuit for integrated circuit device

A protection circuit, electrostatic discharge technology, applied in the direction of emergency protection circuit device, emergency protection circuit device, electric solid device for limiting overcurrent/overvoltage, etc., can solve problems such as insufficient reliability

Inactive Publication Date: 2013-04-10
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of insufficient reliability of the electrostatic discharge protection circuit of the integrated circuit device in the prior art, to provide an electrostatic discharge protection circuit for the integrated circuit device, which provides protection for the internal circuit of the device, and can Sufficient assurance that the I / O pins of the device pass the smoke test

Method used

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  • Smokeless electrostatic discharge protection circuit for integrated circuit device
  • Smokeless electrostatic discharge protection circuit for integrated circuit device
  • Smokeless electrostatic discharge protection circuit for integrated circuit device

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Embodiment Construction

[0052] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0053] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in one embodiment," "in an embodiment," "an example," or "example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, particular features, stru...

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Abstract

The present invention provides a smoke-free ESD protection structure used in integrated circuit devices. A JFET or n-channel MOS transistor is coupled between an I / O pad, and a transistor and diode, wherein the JFET or n-channel MOS transistor limits the current flowing through the diode and transistor to prevent the integrated circuit device from heating up and catching on fire or smoke during the smoke test. Moreover, the integrated circuit device will not be damaged by the smoke test.

Description

technical field [0001] The present invention relates to integrated circuit devices, and more particularly, to electrostatic discharge protection circuits in integrated circuit devices. Background technique [0002] In high input voltage applications, integrated circuit devices need to pass the "smoke test". During the test, each input or output (I / O) pin of an integrated circuit device is connected to a high DC voltage, and if the device does not catch fire or emit smoke, the corresponding pin passes the test. [0003] Since electrostatic discharge (ESD) on the I / O pins of an integrated circuit device will cause damage to the circuit, an ESD protection circuit is usually used to protect the device. figure 1 Shown is the existing ESD protection circuit, including Zener diode D1, NPN bipolar transistor Q1 and resistor R1, the connection relationship is shown in the figure. The I / O pad and the ground (GND) pad are coupled to the I / O pin and the ground (GND) pin, respectively....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02H02H9/04
CPCH02H9/046H01L27/0251
Inventor 詹姆斯·H·阮
Owner CHENGDU MONOLITHIC POWER SYST