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A transient voltage suppression diode tvs device, terminal equipment and control method

A transient voltage suppression, diode technology, applied in the field of electronics, can solve problems such as burning out circuits, and achieve the effect of ensuring safe use

Active Publication Date: 2019-11-19
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a transient voltage suppression diode TVS device, terminal equipment and control method to solve the problem in the prior art that the TVS cannot exit normally after entering the Snap-back mode, resulting in a large current burning the circuit

Method used

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  • A transient voltage suppression diode tvs device, terminal equipment and control method
  • A transient voltage suppression diode tvs device, terminal equipment and control method

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Embodiment Construction

[0020] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0021] See figure 1 , which shows a schematic circuit diagram of a TVS device provided by an embodiment of the present invention.

[0022] An embodiment of the present invention provides a transient voltage suppressor diode TVS device, the TVS device has a Snap-back characteristic, and may include:

[0023] TVS circuit 1a, TVS circuit 1a includes a state detection pin C1;

[0024] A control circuit 1b, the control circuit 1b is connected to the state detection pin C1;

[0025] When the TVS circuit 1a is turned on, the state detection pin C1 is in the first level state; when the control circuit 1b detects that the state detection pin C1 is in the first level state, and the duration reaches the preset time threshold, the state detection pin C1 is turned ...

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Abstract

The invention provides a transient voltage suppressor (TVS) diode device, terminal equipment and a control method. The TVS device has a Snap-back characteristic and comprises a TVS circuit and a control circuit, wherein the TVS circuit comprises a state detection pin, the control circuit is connected with the state detection pin, when the TVS circuit is connected, the state detection pin is in a first level state, when the control circuit detects that the state detection pin is in the first level state and duration time reaches a preset time threshold, the level state of the state detection pin is regulated to a second level state of cutoff of the TVS circuit from the first level state. The TVS device can be guaranteed to exit the Snap-back mode timely, so as to protect the circuit to worknormally, solving the problem that a large current burns the circuit as the TVS device cannot exit normally after entering the Snap-back mode and guaranteeing circuit safety in use.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a TVS device, terminal equipment and a control method. Background technique [0002] TVS (Transient Voltage Suppressor, Transient Voltage Suppressor Diode) is one of the most commonly used electrostatic protection devices in various electronic equipment hardware circuits. Its working principle is to use the reverse breakdown characteristics of the diode to suddenly reduce the Impedance absorbs instantaneous large current and clamps the voltage at both ends to a predetermined amplitude to protect the back-end circuit components from the impact of transient spikes. [0003] Since the protection ability of TVS to the back-end circuit components is mainly reflected in the magnitude of its clamping voltage, the lower the clamping voltage, the better the protection ability of the back-end circuit. However, since the reverse cut-off voltage VRWM of the TVS needs to be great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04
CPCH02H9/041
Inventor 李德健穆青
Owner VIVO MOBILE COMM CO LTD
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