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Rc triggered ESD protection device

A device and triggering circuit technology, applied in emergency protection circuit devices, electrical components, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as power consumption

Active Publication Date: 2013-01-16
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Leakage current from ESD protection circuitry can cause unnecessary power dissipation

Method used

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  • Rc triggered ESD protection device
  • Rc triggered ESD protection device
  • Rc triggered ESD protection device

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Embodiment Construction

[0034] The making and using of preferred embodiments of the invention are discussed in detail below. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the disclosure.

[0035] In a specific context, the present invention has been described with reference to a preferred embodiment of a resistor-capacitor (RC) triggered electrostatic discharge (ESD) protection circuit. However, the present invention can also be applied to various ESD protection circuits.

[0036] First, refer to figure 1 , shows a structural diagram of an ESD protection device according to an embodiment. The ESD protection device includes: a trigger circuit 100 , a drive circuit 102 , and a discharge transistor 104 . like figure 1 As shown, the ESD protectio...

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Abstract

An RC triggered ESD protection device comprises a discharge transistor, a driver circuit and a trigger circuit. The trigger circuit comprises a plurality of native NMOS transistors connected in parallel with a plurality of PMOS transistors operating as resistors. The relatively small resistance of the plurality of native NMOS transistors helps to keep a stable RC time constant value so that the ESD protection device can avoid a leakage current during a power up operation.

Description

technical field [0001] The invention relates to the field of semiconductors, and more specifically, the invention relates to an RC trigger ESD protection device. Background technique [0002] Electrostatic discharge (ESD) is a rapid discharge due to the flow of electrostatic charge between two objects. ESD can destroy semiconductor devices because rapid discharges can generate relatively large currents. In order to reduce semiconductor failures due to ESD, ESD protection circuits have been developed to provide current discharge paths. When an ESD event occurs, the discharge current is conducted through the discharge path without flowing through the discharge circuit to be protected. [0003] In semiconductor technology, resistor-capacitor (RC) triggers for ESD protection circuits are widely used. The RC trigger ESD protection circuit may include: a discharge transistor, a driver, and an ESD spike detection circuit. The ESD spike detection circuit may include: a resistanc...

Claims

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Application Information

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IPC IPC(8): H02H9/00H02H9/04
CPCH02H9/00H02H9/046H02H9/04
Inventor 刘燕霖陈国基杨子毅
Owner TAIWAN SEMICON MFG CO LTD