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Overvoltage protection device

A technology of overvoltage, equipment, applied in the field of overvoltage protection circuit

Active Publication Date: 2020-09-15
STMICROELECTRONICS SRL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device is sometimes subjected to overvoltage

Method used

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  • Overvoltage protection device
  • Overvoltage protection device
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Examples

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Embodiment Construction

[0026] Identical elements have been identified with the same reference numerals in different figures. In particular, structural and / or functional elements common to different embodiments may be denoted by the same reference numerals, and different embodiments may have the same structure, size and material properties.

[0027] For the sake of clarity, only those steps and elements that are helpful to the understanding of the described embodiments have been shown and described in detail. In particular, the integrated circuit to be protected is not specified, and the described embodiments are compatible with conventional integrated circuits.

[0028] Throughout this disclosure, the term "connected" is used to indicate a direct electrical connection between circuit elements without intermediate elements other than conductors, while the term "coupled" is used to indicate an electrical connection between circuit elements The connection may be direct, or the electrical connection ma...

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PUM

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Abstract

Various embodiments of the present disclosure relate to overvoltage protection devices. Overvoltage protection circuits are provided. In some embodiments, an overvoltage protection circuit includes afirst diode made of a first semiconductor material having a bandgap width greater than that of silicon. A second diode is included and is electrically cross-coupled with the first diode. The second diode is made of a second semiconductor material different from the first semiconductor material.

Description

technical field [0001] The present disclosure relates generally to electronic circuits, and more particularly to overvoltage protection circuits. Background technique [0002] An electronic device (eg, an integrated circuit) has terminals between which the electronic device receives or provides a voltage (eg, a supply voltage or a signal). The voltage has a nominal value for which the operation of the device is optimal. The device is sometimes subjected to overvoltages. Overvoltages tend to temporarily cause the voltage across the equipment to be greater in absolute value than the nominal voltage. [0003] In order to avoid the risk of overvoltages altering the operation of integrated circuits and / or avoiding the risk of overvoltages deteriorating integrated circuits, electronic overvoltage protection circuits are used. Contents of the invention [0004] Various embodiments are provided that overcome all or some of the disadvantages of known overvoltage protection devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/04H01L29/12H01L29/16H01L29/1608H01L29/2003H01L29/0684H01L29/861H02H9/041H02H9/046H01L27/0248H01L27/0255H01L29/04H01L29/417H01L29/868
Inventor J-M·西莫内S·恩古S·拉斯库纳
Owner STMICROELECTRONICS SRL