An electrostatic protection device and method

An electrostatic protection and electrostatic technology, which is used in emergency protection circuit devices, protection against overvoltage, and electrical components. It can solve problems such as irreversible damage to FETs, avoid high temperature damage, reduce damage, and improve protection. effect of ability

Inactive Publication Date: 2018-12-18
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides an electrostatic protection device and method to alleviat

Method used

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  • An electrostatic protection device and method

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Embodiment 1

[0030] The embodiment of the present application provides an electrostatic protection device to alleviate the problem of irreversible damage caused by electrostatic breakdown of field effect transistors in the prior art, such as figure 1 As shown, it includes: an electrostatic detection module 12 electrically connected to at least one power consumption module 11; a power management module 14 electrically connected to at least one power consumption module 11; and the static electricity detection module 12 and the power management module 14 control modules 13 electrically connected respectively;

[0031] The electrostatic detection module 12 generates a trigger signal when detecting that the electrostatic voltage meets the protection condition; and sends the trigger signal to the control module 13;

[0032] The control module 13 generates a power-off signal according to the trigger signal; and sends the power-off signal to the power management module 14;

[0033] The power mana...

Embodiment 2

[0068] The embodiment of the present application provides an electrostatic protection method to alleviate the problem of irreversible damage caused by electrostatic breakdown of field effect transistors in the prior art, such as Figure 4 As shown, the electrostatic protection method provided by the application comprises the following steps:

[0069] Step 41: Generate a trigger signal when it is detected that the electrostatic voltage meets the protection condition.

[0070] Step 42: Generate a power-off signal according to the trigger signal.

[0071] Step 43: Stop supplying power to the power consumption module corresponding to the power-off signal.

[0072] In the solution provided by the present application, when the electrostatic voltage meets the protection condition, a trigger signal is generated according to the electrostatic signal, and then a power-off signal is generated, and the power supply is cut off according to the power-off signal. As a result, the field eff...

Embodiment 3

[0091] Figure 7 A schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 700 includes but not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, User input unit 707, interface unit 708, memory 709, processor 710, power supply 711 and other components. Those skilled in the art can understand that, Figure 7 The structure of the mobile terminal shown in the above does not constitute a limitation to the mobile terminal, and the mobile terminal may include more or less components than those shown in the figure, or combine certain components, or arrange different components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, and a ped...

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Abstract

The present application relate to the field of termination technology, and more particularly relates to an electrostatic protection device and method for alleviate the problem of irreversible damage caused by electrostatic breakdown of field effect transistors in the prior art. The device comprises an electrostatic detection module which generates a trigger signal and sends the trigger signal to the control module when detecting that the electrostatic voltage meets the protection condition; The control module generates a power-off signal according to the triggering signal and sends the power-off signal to the power management module. The power management module stops supplying power to the power module corresponding to the power-off signal. The application cuts off the power supply to turnoff the field effect transistor in the electronic equipment, so that the conduction between the source electrode and the drain electrode is not conducted, and static electricity is prevented from passing through the source electrode and the drain electrode. Thus, the latch-up effect caused by the high-voltage static electricity passing through the source electrode and the drain electrode of the field effect transistor is avoided, the damage to field effect transistor due to high-temperature caused by the latch-up effect is avoided, the static electricity protection capability of the electronic equipment is improved, and the static electricity damage to the electronic equipment is reduced.

Description

technical field [0001] The present application relates to the technical field of terminals, and in particular to an electrostatic protection device and method. Background technique [0002] Electro-Static discharge (ESD) is a very common natural phenomenon in life. When different materials and materials come into contact with each other, a certain amount of charge is often accumulated on the surface. When encountering other objects, it may generate static electricity of up to ten thousand volts. discharge voltage. The human body tends to accumulate charges during work and life, especially in a dry environment. Once a large amount of charge is accumulated and the electronic device is touched, it will discharge static electricity to the electronic device, which will usually cause certain damage to the electronic device. [0003] Specifically, the static electricity released to the electronic device can be regarded as one or more pulsed electrical signals. The peak value of th...

Claims

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Application Information

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IPC IPC(8): H02H3/20H02H7/20
CPCH02H3/20H02H7/20
Inventor 刘广辉肖石文
Owner VIVO MOBILE COMM CO LTD
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