ESD protection device with reduced harmonic distortion

Abstract

The embodiment of the invention relates to an ESD protection device with reduced harmonic distortion. An overvoltage protection device includes a first semiconductor device and a second semiconductor device arranged in an anti-series configuration, the first semiconductor device and the second semiconductor device have a conductive link connected between the first semiconductor device and the second semiconductor device at a center node of the overvoltage protection device, a first terminal connection connected to a terminal of the first semiconductor device opposite to the center node, and a second terminal connection connected to a terminal of the second semiconductor device opposite to the center node. And a second terminal piece connected to a terminal of the second semiconductor device opposite to the center node. A total capacitance of the elements in the first transmission path substantially matches a total capacitance of the elements in the second transmission path, the first transmission path being between the first terminal connection and the center node, the second transmission path being between the second terminal connection and the center node. A total capacitance of the elements in the second transmission path includes a self-capacitance of the conductive link.

Description

technical field [0001] Embodiments of the present disclosure relate to ESD protection devices with reduced harmonic distortion. Background technique [0002] In many types of applications, ESD (electrostatic discharge) protection devices are used to protect sensitive circuit devices from sudden voltage spikes. Examples of these applications include microelectronics, RF electronics, power electronics, and automotive applications. One type of ESD protection device popular in many applications is the TVS (transient voltage suppressor) device, which operates as a clamping device to suppress potentially damaging voltages. In general, TVS devices can be implemented by any two-terminal device (eg, diodes, capacitors, etc.) that has nonlinear capacitive behavior when biased. Although TVS devices offer advantages over other types of protection devices, such as minimal overshoot and low cost, they have certain disadvantages. For example, in RF applications where electromagnetic com...

AI Technical Summary

Problems solved by technology

Although TVS devices offer advantages over other types of protection devices, such as minimal overshoot and low cost, they have certain disadvantages

For example, in RF applications where electromagnetic compatibility is an important design consideration, the nonlinear electrical device characteristics of TVS devices can cause the emission of spurious signals due to the generation of harmonic signals and intermodulation distortion

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