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Push-pull output buffer with self-protection function

A push-pull output and buffer technology, applied in the direction of logic circuit coupling/interface, logic circuit connection/interface layout, etc. using field effect transistors, can solve problems such as device damage, achieve low frequency impact, protection safety, capacitive load small effect

Pending Publication Date: 2021-06-11
英彼森半导体(珠海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, there are some corner cases that lead to device damage

Method used

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  • Push-pull output buffer with self-protection function
  • Push-pull output buffer with self-protection function
  • Push-pull output buffer with self-protection function

Examples

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The embodiment of the present invention discloses a push-pull output buffer with self-protection function, including: a buffer, a control unit and a blocking unit;

[0020] The buffer is connected to the input terminal through the blocking unit, and the control unit is connected to the buffer, the blocking unit and the output terminal.

[0021] In order to further optimize the above technical solution, the circuit structure of the buffer is as follows: ...

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Abstract

The invention discloses a push-pull output buffer with a self-protection function. The push-pull output buffer comprises a buffer, a control unit and a blocking unit, the buffer is connected with the input end through the blocking unit, and the control unit is connected with the buffer, the blocking unit and the output end. The control unit induces interference voltage and controls the blocking unit to block input signals, safety of circuit elements is protected, the capacitive load is small, and the influence on the frequency of the buffer is low.

Description

technical field [0001] The invention relates to the technical field of circuit protection, in particular to a push-pull output buffer with self-protection function. Background technique [0002] At present, push-pull output buffers are widely used in high-voltage high-speed drive amplifiers due to their simple structure, large bandwidth, and strong drive capability. [0003] However, in practical applications, there are some extreme cases that lead to device damage. For example, the output OUT terminal is short-circuited to the power supply or ground, the external lightning surge is poured into the OUT terminal, and the OUT pin is electrostatically discharged to the INP pin, etc. [0004] Therefore, it is an urgent problem for those skilled in the art to provide a push-pull output buffer with self-protection function. Contents of the invention [0005] In view of this, the present invention provides a push-pull output buffer with self-protection function, through the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0185
CPCH03K19/0185
Inventor 唐聪邹亮彭巍
Owner 英彼森半导体(珠海)有限公司
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