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A fully integrated DC to 75 MHz current sensing circuit with on-chip Rogowski coil

  • A wide-bandwidth galvanically isolated current sensing circuit with an integrated Rogowski coil in 180nm CMOS is presented. Exploiting the high-frequency properties of an optimized on-chip Rogowski coil, currents can be measured up to a bandwidth of 75 MHz. The analog sensor front-end comprises a two-stage integrator, which allows a chopper frequency below signal bandwidth, resulting in 2.2 mVrms output noise. An additional integrated Hall sensor extends the measurement range towards DC.

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Metadaten
Author of HS ReutlingenFunk, Tobias; Wicht, Bernhard
DOI:https://doi.org/10.1109/CICC.2018.8357028
ISBN:978-1-5386-2483-8
Erschienen in:2018 IEEE Custom Integrated Circuits Conference (CICC) : 8-11 April 2018
Publisher:IEEE
Place of publication:Piscataway, NJ
Document Type:Conference proceeding
Language:English
Publication year:2018
Page Number:4
DDC classes:620 Ingenieurwissenschaften und Maschinenbau
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt