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Protection circuit for output device

A technology for devices and electronic devices, applied in the field of protection circuits, can solve problems such as overall device operation failure and output device damage

Inactive Publication Date: 2017-02-15
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, permanent damage to the output device can result and the operation of the overall device can fail

Method used

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  • Protection circuit for output device
  • Protection circuit for output device
  • Protection circuit for output device

Examples

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Embodiment Construction

[0011] The following disclosure provides many different embodiments or examples for implementing different features of the presented subject matter. Specific examples of components and arrangements are described below to simplify the present disclosure. Of course, these are examples only and are not intended to be limiting. For example, in the following description, forming a first component over or on a second component may include embodiments in which the first component and the second component are formed in direct contact, and may also include forming between the first component and the second component. An embodiment of an additional component such that the first component and the second component may not be in direct contact. Furthermore, the present invention may repeat reference numerals and / or characters in various instances. This repetition is for the sake of brevity and clarity and does not in itself indicate a relationship between the various embodiments and / or c...

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Abstract

An electronic device is disclosed that includes an output device and a detection circuit. The output device is coupled to an output pad, and is turned on according to a protection signal. The detection circuit is configured to detect a voltage level of a control node, to generate the protection signal based on the detected voltage level, and to switch the voltage level to a predetermined voltage level according to the detected voltage level.

Description

technical field [0001] The present invention relates to the field of integrated circuits, and more particularly to protection circuits for output devices. Background technique [0002] Output devices are used to provide high drive capability of integrated circuits. For example, driver stages including operational amplifiers are used to improve the drive capability of analog circuits. In many cases, however, an output device is coupled between the output pad and the integrated circuit. Output devices are subjected to overstress voltages from output pads, such as electrostatic discharge (ESD) pulses. As a result, permanent damage to the output device can result, and operation of the overall device can fail. Contents of the invention [0003] An embodiment of the present invention provides an electronic device, including: an output device coupled to an output pad, and the output device is turned on according to a protection signal; and a detection circuit configured to det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/046H02H9/04
Inventor 朱又麟柯锦源郭锡瑜
Owner TAIWAN SEMICON MFG CO LTD
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