US 2026/0177638 A1 · HARDWARE FAULT MONITORING CIRCUIT

Abstract

A fault detection circuit provides hardware-based fault detection to a system including power electronics. The fault detection circuit includes sensor interfaces and scaling amplifiers to scale sensor outputs for comparison to reference voltages at respective comparators. Logic levels output from the comparators are received at logic gate circuits and used to determine a master logic level that is used to control a gate driver, thereby directing response to the detection of a fault by the fault detection circuit. The fault detection circuit can be included in a motor controller such as a motor controller of a hydraulic power pack.

Claims20

Dependent claims

A fault monitoring circuit, comprising:

one or more sensor interfaces;
one or more scaling amplifiers, each scaling amplifier connected to a respective sensor interface of the one or more sensor interfaces, each of the one or more scaling amplifiers configured to output a scaled voltage proportional to a voltage received from the respective sensor interface;
one or more comparators each configured to receive the scaled voltage from one of the one or more scaling amplifiers and to output a logic level based on the scaled voltage, the logic level indicative of health or a fault;
a logic gate circuit configured to receive the logic level of each of the one or more comparators and to output a master logic level signal.

1 more element

Dependencies are inferred from the claim text.

Hardware fault monitoring circuit

Life of this patent

Hardware fault monitoring circuit

Life of this patent

Abstract

Claims20