Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Patent
1999-04-09
2000-03-07
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
327475, 327463, 327327, 327110, H03K 1772, H03K 1764
Patent
active
060345616
ABSTRACT:
A transient suppressor comprises a self-triggered silicon control rectifier (SCR) that forms a drive circuit for an NPN power transistor. The SCR and the NPN power transistor are combined, along with other elements, into an integrated circuit (IC) by a junction isolated BiCMOS process. The SCR self-triggers upon being subjected to an inductive flyback condition created by an inductive load and renders the NPN transistor conductive, thereby allowing the NPN power transistor, having a relatively large semiconductor region, to effectively snub the current created by the negative feedback condition. The transient suppressor may be used in either a high-side or low-side driver arrangement and the SCR/NPN power transistor combination may further be combined with load driving and other circuitry on a single integrated circuit. The IC is designed to perform normally when subjected to transient conditions and further when there exists a potential voltage differential between the circuit ground and the load ground of at least 2 volts.
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Dikeman John Mark
Gose Mark Wendell
Delco Electronics Corporation
Funke Jimmy L.
Tran Toan
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