Structure and method for controlling electrostatic discharge (ESD) event in resistor-capacitor circuit

Embodiments of the disclosure provide a circuit structure and method to control electrostatic discharge (ESD) events in a resistor-capacitor (RC) circuit. Circuit structures according to the disclosure may include a trigger transistor coupled in parallel with the RC circuit, and a gate terminal coup...

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Bibliographic Details
Main Authors Gauthier, Jr., Robert J, Miao, Meng, Mitra, Souvick, Li, You, Loiseau, Alain F, Liang, Wei
Format Patent
LanguageEnglish
Published 31.05.2022
Subjects
BASIC ELECTRIC ELEMENTS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
SEMICONDUCTOR DEVICES
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Summary:Embodiments of the disclosure provide a circuit structure and method to control electrostatic discharge (ESD) events in a resistor-capacitor (RC) circuit. Circuit structures according to the disclosure may include a trigger transistor coupled in parallel with the RC circuit, and a gate terminal coupled to part of the RC circuit. A mirror transistor coupled in parallel with the RC circuit transmits a current that is less than a current through the trigger transistor. A snapback device has a gate terminal coupled to a source or drain of the mirror transistor, and a pair of anode/cathode terminals coupled in parallel with the RC circuit. A current at the gate terminal of the snapback device, derived from current in the mirror transistor, controls an anode/cathode current flow in the snapback device.
Bibliography:Application Number: US202017082182