Delphi Technologies, Inc.

James W Ananias

Jeffrey Alan Ely

Tillasthanam V Sriram

An electrical circuit for providing a temperature compensated feedback signal includes a first electrical component and a first amplifier. The first electrical component exhibits a first temperature variable impedance and is positioned in thermal contact with a first switch having a second temperature variable impedance. The first amplifier includes an input electrically coupled to the first switch and an output electrically coupled to an input of the first electrical component. The first amplifier amplifies the signal produced across the first switch when the first switch is conducting and the first electrical, component attenuates the amplified signal provided by the first amplifier as a function of a temperature of the first electrical component. The attenuated amplified signal is provided at an output of the first electrical component to provide a temperature compensated feedback signal.

Method and system for providing a temperature compensated feedback signal

An improved series-pass over-voltage protection circuit for a motor vehicle electrical system includes first and second parallel connected power paths that respectively provide low current capability with low quiescent current drain, and high current capability with low on-resistance. The first power path, embodied by a P-channel MOSFET, supplies pass-through battery current to quiescent loads such as an engine control module during periods of vehicle inactivity. The second power path, embodied by at least one N-channel MOSFET, is activated by a gate voltage power supply during periods of vehicle activity. The second power path is configured to limit the circuit output voltage to a higher value than the first power path, so that the over-voltage protection during periods of vehicle activity is accomplished by the second power path.

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Indianapolis, IN, United States of America

James W Ananias