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Circuit and method for electrostatic discharge protection

A technology of electrostatic discharge protection and circuit, which is applied in the direction of emergency protection circuit device, emergency protection circuit device, circuit, etc. for limiting overcurrent/overvoltage, and can solve problems such as manufacturing ESD protection systems

Pending Publication Date: 2022-03-11
TAIWAN SEMICON MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to fabricate an ESD protection system capable of handling bidirectional electrostatic discharge (ESD) currents with the GaN-based circuits described above

Method used

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  • Circuit and method for electrostatic discharge protection
  • Circuit and method for electrostatic discharge protection
  • Circuit and method for electrostatic discharge protection

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] Example 1. A circuit for electrostatic discharge protection, comprising: an electrostatic discharge ESD protection switch; and an ESD driver configured to receive a first voltage and a second voltage; wherein, when the first voltage and the second When the voltage difference between the voltages is higher than the first voltage threshold, the ESD driver outputs a first trigger signal to turn on the ESD protection switch; wherein, when the voltage between the first voltage and the second voltage When the difference is lower than the second voltage threshold, the ESD driver outputs a second trigger signal to turn on the ESD protection switch.

example 2

[0082] Example 2. The circuit of example 1, wherein the ESD driver comprises: a first trigger circuit comprising: a first input terminal configured to receive the first voltage; and a first output terminal, wherein when When the voltage difference between the first voltage and the second voltage is higher than the first voltage threshold, the first output terminal outputs the first trigger signal.

example 3

[0083] Example 3. The circuit of example 2, wherein the ESD driver further comprises: a second trigger circuit comprising: a second input terminal configured to receive the second voltage; and a second output terminal, wherein When the voltage difference between the first voltage and the second voltage is lower than the second voltage threshold, the second output terminal outputs the second trigger signal.

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PUM

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Abstract

The invention relates to a circuit and a method for electrostatic discharge protection. A circuit is disclosed herein. The circuit includes an electrostatic discharge (ESD) protection switch and an ESD driver. The ESD driver is configured to receive a first voltage and a second voltage. When a voltage difference between the first voltage and the second voltage is higher than a first voltage threshold, the ESD driver outputs a first trigger signal to turn on the ESD protection switch. When a voltage difference between the first voltage and the second voltage is lower than a second voltage threshold, the ESD driver outputs a second trigger signal to turn on the ESD protection switch.

Description

technical field [0001] The present disclosure relates to circuits and methods for electrostatic discharge protection. Background technique [0002] Gallium Nitride (GaN) based circuits are widely used in commercial applications, especially in high power applications. However, it is difficult to fabricate an ESD protection system capable of handling bi-directional electrostatic discharge (ESD) currents using the GaN-based circuits described above. Contents of the invention [0003] According to an embodiment of the present disclosure, there is provided a circuit for electrostatic discharge protection, including: an electrostatic discharge ESD protection switch; and an ESD driver configured to receive a first voltage and a second voltage; wherein, when the first When the voltage difference between a voltage and the second voltage is higher than a first voltage threshold, the ESD driver outputs a first trigger signal to turn on the ESD protection switch; wherein, when the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/00H02H9/04
CPCH02H9/00H02H9/04H02H9/046H01L27/0285H01L27/0248
Inventor 樊航赖明芳郑水明
Owner TAIWAN SEMICON MFG CO LTD
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