The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2021
Filed:
May. 01, 2020
Nordic Semiconductor Asa, Trondheim, NO;
Nordic Semiconductor ASA, Trondheim, NO;
Abstract
A voltage monitoring circuit portion is arranged to monitor a negative supply voltage (V) and comprises a negative voltage generator arranged to generate the negative supply voltage (V) and to output the negative supply voltage (V) at an output terminal. A capacitor is arranged so that a first capacitor plate is connected to the output terminal of the generator and to a reference node via a potential divider. The potential divider is arranged to produce a monitor voltage (V) between the resistors, where the reference node is supplied with a positive predetermined reference voltage (V). A comparator compares the monitor voltage (V) to a threshold voltage (V) and to produce an output signal having a first value when the monitor voltage (V) is below the threshold voltage (V) and having a second value otherwise. The negative voltage generator is enabled only when the output signal has its second value.