Fault check without software intervention

US11526389B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Ketan Dewan · Unterhaching, DE
• Juergen Schaefer · Oberhaching, DE

Key dates

• Filing date: Jun 3, 2020
• Grant date: Dec 13, 2022
• Expiry date: Jun 19, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2012/40273
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A fault check circuit, including a first channel comparator to output a first channel comparator output signal indicating whether a first channel digital signal is outside of a first channel threshold range, wherein the first channel digital signal is A/D converted from a first channel analog signal; a second channel comparator to output a second channel comparator output signal indicating whether a second channel digital signal is outside of a second channel threshold range, wherein the second channel digital signal is A/D converted from a second channel analog signal; and an alarm generator circuit to combine the first and second channel comparator output signals, and output a fault check signal, wherein the first and second channel comparators and the alarm generator circuit are implemented in hardware, and the fault check circuit performs a fault check without software intervention.