Daniel N Black

US Patent:

20190317868, Oct 17, 2019

Filed:

Apr 15, 2019

Appl. No.:

16/384089

Inventors:

- San Jose CA, US
Brian A. Miller - Gilbert AZ, US
Daniel J. Black - Tempe AZ, US
Daniel David Alexander - Mesa AZ, US
Hang Fung Yip - Chandler AZ, US
Jiuhui Wang - Gilbert AZ, US

Assignee:

Maxim Integrated Products, Inc. - San Jose CA

International Classification:

G06F 11/16
G05B 23/02

Abstract:

Described herein are systems and methods for real-time fault detection in electrical circuits. Various embodiments provide a fault detection circuit that uses a resistor network that is controlled to detect an internal current leak in multiple directions, e.g., to ground or to a power supply. The magnitude of the leakage current may be estimated from voltage measurements at voltage pins. In addition, as part of circuit diagnostics, open and short circuit fault conditions may be identified by using current sources and measuring deflections at the voltage pins.