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High Accuracy Open-Type Current Sensor with a Differential Planar Hall Resistive Sensor

Title
High Accuracy Open-Type Current Sensor with a Differential Planar Hall Resistive Sensor
Authors
Lee, SunghoHong, SungminPark, WonkiKim, WonhyoLee, JaehoonShin, KwanghoKim, CheolGiLee, Daesung
DGIST Authors
Kim, CheolGi
Issue Date
2018-07
Citation
Sensors, 18(7)
Type
Article
Article Type
Article
Keywords
current sensorhigh accuracymagnetic sensorplanar hall resistive (PHR)post-CMOS processread-out IC (ROIC)OPTICAL CURRENT-TRANSFORMERMAGNETORESISTIVE CURRENTDESIGNFIELDLOOP
ISSN
1424-8220
Abstract
In this paper, we propose a high accuracy open-type current sensor with a differential Planar Hall Resistive (PHR) sensor. Conventional open-type current sensors with magnetic sensors are usually vulnerable to interference from an external magnetic field. To reduce the effect of an unintended magnetic field, the proposed design uses a differential structure with PHR. The differential structure provides robust performance to unwanted magnetic flux and increased magnetic sensitivity. In addition, instead of conventional Hall sensors with a magnetic concentrator, a newly developed PHR with high sensitivity is employed to sense horizontal magnetic fields. The PHR sensor and read-out integrated circuit (IC) are integrated through a post-Complementary metal-oxide-semiconductor (CMOS) process using multichip packaging. The current sensor is designed to measure a 1 A current level. The measured performance of the designed current sensor has a 16 kHz bandwidth and a current nonlinearity of under +/- 0.5%.
URI
http://hdl.handle.net/20.500.11750/9353
DOI
10.3390/s18072231
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Related Researcher
  • Author Kim, CheolGi Lab for NanoBio-MatErials & SpinTronics(nBEST)
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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