Electrostatic discharge protection circuit for high voltage...

Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means

Reexamination Certificate

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Details

C361S111000, C361S091100

Reexamination Certificate

active

07619862

ABSTRACT:
An electrostatic discharge protection circuit includes a high-voltage supply terminal (VDD), an input/output (IO) pad, and a first shunting transistor that can discharge electrostatic charges between the IO pad and VDD in response to a control signal. A trigger circuit can output the control signal in response to an electrostatic voltage between the IO pad and VDD. The electrostatic discharge protection circuit also includes a first group of serially connected diodes, which includes a first end connected to the IO pad and a second end configured to supply power to the trigger circuit.

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