US 6,208,242 B1 · Circuit configuration to monitor a regulated output voltage in a motor vehicle

Abstract

The present invention relates to a circuit arrangement to monitor a regulated output voltage in an automotive vehicle, wherein the regulated output voltage is monitored as to whether defined threshold values have been exceeded and/or have fallen short of, wherein the circuit element for regulating the output voltage and the circuit element to monitor whether threshold values have been exceeded or have fallen short of are integrated in one chip, wherein the adjustment of the output voltage is effected by way of a first reference voltage, and wherein monitoring of the threshold values as to whether they have been exceeded or have fallen short of is conducted by way of a second reference voltage.

Claims5

Dependent claims

Circuit arrangement for monitoring a regulated output voltage in an automotive vehicle, comprising:

an integrated circuit including
a first voltage reference,
a first voltage regulator coupled to said first voltage reference,
a first comparator, coupled to both the first voltage reference and the first voltage regulator, for determining if a first threshold has been exceeded, and sending a reset signal,
a second voltage reference spatially, mechanically, and electrically independent from said first voltage reference,
a second comparator, coupled to both the second voltage reference and the first voltage regulator, for determining if a second threshold has been exceeded, and sending an output signal indicating that the second threshold has been exceeded.

3 more elements

Dependencies are inferred from the claim text.

Circuit configuration to monitor a regulated output voltage in a motor vehicle

Life of this patent

Circuit configuration to monitor a regulated output voltage in a motor vehicle

Life of this patent

Abstract

Claims5