CMOS magnetic field sensor using a pick-up loop

for measuring electric currents

Master thesis (2022)

Authors

J. Boele Electrical Engineering, Mathematics and Computer Science

Contributors

C.J.M. Verhoeven Electronics - EEMCS (mentor)
A.J.M. Montagne Electronics - EEMCS (mentor)
J. Dong DC systems, Energy conversion & Storage - EEMCS (graduation committee member)
Faculty
Electrical Engineering, Mathematics and Computer Science, Electrical Engineering, Mathematics and Computer Science
Copyright: © 2022 Jelle Boele
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Published Date

31-01-2022

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

This thesis describes the design of a CMOS magnetic field sensor system for measuring electronic currents. A hybrid system, using Hall plates and a pick-up loop is chosen to obtain improved performance compared to conventional Hall based magnetic field sensors. The pick up loop enables to reduce the current consumption and increases the bandwidth of the system. The design of the pick-up loop and readout amplifier are described in detail. Simulation results of the pick-up loop signal path offer a factor 10 increase in bandwidth using 24% less current compared to a system consisting of two Hall plate channels.

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