An electrostatic protection device and method

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...

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