Layout Based Ultra-Fast Short-Circuit Protection Technique for Parallel Connected GaN HEMTs

Date

2021-01-01

Author

Karakaya, Furkan
Keysan, Ozan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

183
views

0
downloads

Gallium Nitride Enhancement-Mode High Electron Mobility Transistors (GaN HEMTs) help to achieve high power density converter circuits thanks to their superior efficiency, higher switching speed and small package size. However, increased switching speed results in a sharp increase in short circuit (SC) current under a shoot-through fault with respect to other type of devices. GaN HEMTs can withstand the SC current only for several hundred nanoseconds. Therefore, fast SC protection solutions are critical for protecting power circuits. In this paper, the voltage induced by high slew rate of SC current on the high frequency power loop inductance resulting from the printed circuit board (PCB) layout is sensed to implement an ultra-fast short-circuit protection technique. The proposed technique does not increase circuit parasitics and provides flexibility in layout design that makes it suitable for parallel connected GaN HEMTs, which require symmetric layout design for equal current sharing. A multi-pulse test is conducted under 1.56 MHz switching frequency, 400 VDC bus voltage and 40 A load current by using parallel connected GaN HEMTs in a half-bridge configuration to verify the robustness and reliability of the proposed protection technique. Experimental results show that the proposed protection technique is able to detect SC fault within 40 ns and fault is completely cleared with a soft turn-off in 250 ns.

Subject Keywords

Circuit faults, Gallium Nitride, GaN HEMTs, Transistor paralleling, Layout design, Short circuit protection

URI

https://ieeexplore.ieee.org/abstract/document/9328269
https://hdl.handle.net/11511/89527

Journal

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS

DOI

https://doi.org/10.1109/jestpe.2021.3052611

Collections

Department of Electrical and Electronics Engineering, Article

Suggestions

OpenMETU
Core

PCB Layout Based Short-Circuit Protection Scheme for GaN HEMTs Alemdar, Ozturk Sahin; Karakaya, Furkan; Keysan, Ozan (2019-01-01) Gallium Nitride Enhancement-Mode High Electron Mobility Transistors (GaN HEMTs) are superior to other power transistors in terms of efficiency, package size and switching speed which leads to increased power density in power converter applications. However, GaN HEMTs have much shorter short-circuit withstand time compared to the conventional devices, which is limited to several hundred nanoseconds. Therefore, reliable and fast protection solutions are required to protect GaN HEMTs from fatal over-current fa...
Characterization of gan transistors and developmentof bi-directional dc/dc converter with half-bridgehaving short circuit protection for parallel switches Karakaya, Furkan; Keysan, Ozan; Department of Electrical and Electronics Engineering (2020-9) Wide band-gap semiconductors are superior to Si-based semiconductors with their increased electron mobility and breakdown strength which leads to small package sizes, low parasitics, and increased switching frequency capability. Efficient and dense power converter could be obtained with wide band-gap devices especially GaN transistors. This thesis investigates the GaN HEMTs in terms of their characterization and pplication. The gate charge and output capacitance of GaN HEMTs are characterized by designed ex...
High-performance readout circuit for resonator-based MEMS accelerometer using digital control loop Ali, Muhammad; Akın, Tayfun; Department of Electrical and Electronics Engineering (2022-11) This study proposes a new digital control loop-based compact readout circuit for a resonant MEMS accelerometer providing high performance with reduced temperature and power supply dependence while utilizing low processing power. The readout circuit utilizes a charge-sensing pre-amplifier stage that converts the small motional current to readable voltage, which is then converted to the digital domain using a 16-bit ADC to perform the amplitude and frequency extraction in the digital domain. A Proportional In...
Strain induction on GE nanobeams by electrostatic actuation Ayan, Arman; Yerci, Selçuk; Department of Electrical and Electronics Engineering (2018) Germanium (Ge) is one of the most promising materials to accomplish the monolithic integration of optics and electronics on the same chip, mainly due to its compatibility with the existing silicon (Si) technology, high charge carrier mobility and high absorption coefficient in the near-infrared region. However, realization of efficient Ge light emitters requires techniques such as tensile strain induction, tin (Sn) incorporation and/or heavy n-type doping to alter its band gap enabling direct transitions. A...
A CMOS switched-capacitor interface circuit for an integrated accelerometer Külah, Haluk; Najafi, K (2000-01-01) This paper presents a CMOS interface electronics for monolithic micromachined capacitive accelerometer systems. The interface electronics is a fully differential switched-capacitor charge integrator with its internal clock generator and sensor feedback circuit for closed-loop operation. The circuit is designed for open-loop and closed-loop operations, and provides both digital and differential analog outputs. One of the main advantages of this chip is that it can be monolithically integrated with the sensor...

Citation Formats

F. Karakaya and O. Keysan, “Layout Based Ultra-Fast Short-Circuit Protection Technique for Parallel Connected GaN HEMTs,” IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, pp. 1–1, 2021, Accessed: 00, 2021. [Online]. Available: https://ieeexplore.ieee.org/abstract/document/9328269.