US 12,216,174 B2
Current sensor device
Bruno Boury, Tessenderlo (BE); Asparuh Grigorov, Sofia (BG); and Stephane Rauw, Tessenderlo (BE)
Assigned to MELEXIS TECHNOLOGIES SA, Bevaix (CH)
Filed by Melexis Technologies SA, Bevaix (CH)
Filed on Dec. 29, 2022, as Appl. No. 18/148,099.
Claims priority of application No. 21218046 (EP), filed on Dec. 29, 2021.
Prior Publication US 2023/0204682 A1, Jun. 29, 2023
Int. Cl. G01R 31/392 (2019.01); G01R 15/20 (2006.01); G01R 19/165 (2006.01); G01R 31/3832 (2019.01)
CPC G01R 31/392 (2019.01) [G01R 15/202 (2013.01); G01R 19/1659 (2013.01); G01R 31/3832 (2019.01)] 17 Claims
OG exemplary drawing
 
1. A current sensor device for measuring a current in a conductor comprising:
current sensing means comprising a magnetic sensing element for contactlessly measuring the current,
amplification means arranged to act in a first state and in a second state, said amplification means in said first state being arranged for amplifying a first signal from said current sensing means with an adjustable first gain and a first bandwidth to yield a first amplified signal, and said amplification means in said second state arranged for amplifying a second signal from said current sensing means with a second gain and a second bandwidth, yielding a second amplified signal, wherein said first gain is higher than the second gain, wherein the first gain and the second gain are larger than 1,
processing means arranged for receiving said first and said second amplified signal, for controlling at least said first gain, for detecting an event based on at least said second amplified signal and for producing a signal indicative of said event, and
an output terminal arranged for outputting a signal indicative of said current based on said first amplified signal, and
an output terminal arranged for outputting said signal indicative of the event, wherein the event is a fault.