Patent · US Active

Voltage monitor

US10473698B2 · kind B2 · utility

3Cited by

4References

20Claims

0Family size

Assignee

Nordic Semiconductor ASA · NO

Inventors

Hans Ola Dahl · Trondheim, NO
Sebastian Ioan Ene · Trondheim, NO

Key dates

Filing date	Jun 16, 2016
Grant date	Nov 12, 2019
Priority date	—
Expiry date	Jul 7, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH03K5/2481
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A voltage monitor circuit comprises: a monitored voltage input (42); a reference capacitor (32) arranged to be able to store a value of the monitored voltage as a reference capacitor voltage; a timeout capacitor (34) arranged to be able to store a value of the monitored voltage as a timeout capacitor voltage. The timeout capacitor undergoes a higher leakage than the reference capacitor. The voltage monitor circuit also comprises a comparator (2) arranged to: compare the monitored voltage to the reference capacitor voltage; compare the timeout capacitor voltage to the reference capacitor voltage; and produce a logic signal on an output (9) of the comparator based on said comparisons, the logic signal having a first logic value at least if the reference capacitor voltage is lower than or equal to both the monitored voltage and the timeout capacitor voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.