Analysis of Various Pickup Coil Designs in Nonmodule-Type GaN Power Semiconductors
- Title
- Analysis of Various Pickup Coil Designs in Nonmodule-Type GaN Power Semiconductors
- Author
- 김래영
- Keywords
- GaN; Rogowski coil; pick-up coil; double pulse test; switch current
- Issue Date
- 2020-10
- Publisher
- MDPI
- Citation
- SENSORS, v. 20, no. 21, article no. 6066
- Abstract
- Gallium nitride (GaN) devices are advantageous over conventional Silicon (Si) devices in terms of their small size, low on-resistance, and high dv/dt characteristics; these ensure a high integrated density circuit configuration, high efficiency, and fast switching speed. Therefore, in the diagnosis and protection of a system containing a GaN power semiconductor, the transient state for accurate switch current measurement must be analyzed. The pick-up coil, as a current sensor for switch current measurement in a system comprising a surface-mount-device-type nonmodular GaN power semiconductor, has the advantages of a higher degree-of-freedom configuration for its printed circuit board, a relatively small size, and lower cost than other current sensors. However, owing to the fast switching characteristics of the GaN device, a bandwidth of hundreds MHz must be secured along with a coil configuration that must overcome the limitations of relatively low sensitivity of the conventional current sensor. This paper analyzes the pick-up coil sensor models that can achieve optimal bandwidth and sensitivity for switch current measurement in GaN based device. So four configurable pick-up coil models are considered and compared according to coil-parameter using mathematical methods, magnetic, and frequency-response analysis. Finally, an optimal coil model is proposed and validated using a double-pulse test.
- URI
- https://www.mdpi.com/1424-8220/20/21/6066https://repository.hanyang.ac.kr/handle/20.500.11754/171180
- ISSN
- 1424-8220
- DOI
- 10.3390/s20216066
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
- Files in This Item:
- Analysis of Various Pickup Coil Designs in Nonmodule-Type GaN Power Semiconductors.pdfDownload
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