US 2017/0324238 A1Published application

Electrostatic discharge protection device

AssigneeALi Corporation

InventorsChuan-Sheng Lee, Bing-You Gao

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Abstract

An electrostatic discharge (ESD) protection device including an ESD protection unit and a control circuit is provided. When a voltage level of a signal received by a signal input terminal reaches an ESD protection level, the ESD protection unit transmits the signal from the signal input terminal to the system voltage terminal. The control circuit controls a conduction state between the signal input terminal and the system voltage terminal through the ESD protection unit. The control circuit generates a control voltage according to the voltage level of the signal received by the signal input terminal and a system voltage level of the system voltage terminal to control the ESD protection unit, and to prevent the ESD protection unit from transmitting the signal to the system voltage terminal when the voltage level of the signal received by the signal input terminal does not reach the ESD protection level.

Claims11

Dependent claims

An electrostatic discharge protection device, comprising:

an electrostatic discharge protection unit, coupled between a signal input terminal and a system voltage terminal, wherein when a voltage level of a signal received by the signal input terminal reaches an electrostatic discharge protection level, the electrostatic discharge protection unit transmits the signal from the signal input terminal to the system voltage terminal;
and
a control circuit, coupled to a control terminal of the electrostatic discharge protection unit, and controlling a conduction state between the signal input terminal and the system voltage terminal through the electrostatic discharge protection unit,
wherein the control circuit generates a control voltage according to the voltage level of the signal received by the signal input terminal and a system voltage level of the system voltage terminal to control the electrostatic discharge protection unit, and to make the electrostatic discharge protection unit not transmit the signal to the system voltage terminal when the voltage level of the signal received by the signal input terminal does not reach the electrostatic discharge protection level.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/463,568Filed 20 Mar 2017
Priority: CN 201610289340.X4 May 2016
Published: 9 Nov 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H10D 89/911
For devices having insulated gate electrodes, e.g. for IGFETs or IGBTs: using passive elements as protective elements
H10D 89/819
Using FETs as protective elements: bias arrangements for gate electrodes of FETs, e.g. RC networks or voltage partitioning circuits
H02H 9/046
Adapted to a particular application and not provided for elsewhere: responsive to excess voltage appearing at terminals of integrated circuits
H10W 42/60
Arrangements for protection of devices: protecting against electrostatic charges or discharges, e.g. Faraday shields