Single well excess current dissipation circuit

Details Single well excess current dissipation circuit Single well excess current dissipation circuit

2006-09-15

2008-11-25

Prenty, Mark (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Regenerative type switching device

Device protection

C257S355000, C361S091500

Reexamination Certificate

active

07456441

ABSTRACT:
A current dissipation circuit that dissipates excess current to or from a circuit node when that monitored circuit node experiences abnormal voltage conditions, rather than having that excess current being dissipated through other protected circuitry. The current dissipation circuit may use single well technology, and may even provide reverse voltage protection without necessarily triggering more significant current dissipation. In another embodiment, the current dissipation circuit is provided by a series connection of at least five alternating p-type and n-type regions provided between the monitored circuit node and a current source or sink.

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