Patent · US Active

Power supply glitch detector

US10156595B2 · kind B2 · utility

6Cited by

7References

19Claims

0Family size

Assignee

Microsemi SoC Corp. · US

Inventors

Bhawana Singh Nirwan · Hyderabad, IN
Abhishek Lal · Faridabad, IN

Key dates

Filing date	Dec 4, 2017
Grant date	Dec 18, 2018
Priority date	—
Expiry date	Dec 4, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH03K19/17768
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A power supply glitch detector includes a sense node AC coupled to a power supply node on which voltage glitches having a magnitude of Vglitch are to be detected. A sensing inverter has an input and an output, the input coupled to the sensing node, the sensing inverter having a trip voltage Vtrip below which the output of the sensing inverter is at a voltage representing a logic high state and above which the output of the sensing inverter is at a voltage representing a logic low state. An adjustable voltage biasing circuit is coupled to the sensing node to maintain the input of the sensing inverter at a bias voltage Vbias, wherein Vbias is chosen such that either both conditions (Vbias<Vtrip) and (Vbias+Vglitch>Vtrip) or both conditions (Vbias>Vtrip) and (Vbias−Vglitch<Vtrip) are always true.

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