Monolithic integratable circuit arrangement for protection...

Details Monolithic integratable circuit arrangement for protection... Monolithic integratable circuit arrangement for protection...

2006-10-31

2006-10-31

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

Reexamination Certificate

active

07130175

ABSTRACT:
At least one or more terminals of an integrated circuit, such as a low- or high-side driver stage, are protected against transient or over-voltages by two pairs of diodes. A first pair of diodes includes a regular diode (D1 or D1′) and a Zener-diode (ZD1 or ZD1′). A second pair of diodes also includes a regular diode (D2 or D3) and a Zener-diode (ZD2 or ZD3). These diode pairs are looped into the respective circuit and cooperate with an n-channel MOSFET or a p-channel MOSFET to provide the required over-voltage protection, particularly for transmitter/receiver circuits and databus systems especially in motor vehicles.

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