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Research on Driving Optimization for Improving Oscillation Stability of GaN-based Circuits
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Nan ZHANG, Yan LI, Fangwei ZHAO
Journal of Power Supply | 2025, 23(1) : 209 - 218
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Journal of Power Supply | 2025, 23(1): 209-218
• Power Semiconductor Devices •
Research on Driving Optimization for Improving Oscillation Stability of GaN-based Circuits
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Nan ZHANG, Yan LI, Fangwei ZHAO
Affiliations
  • School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Published: 2025-01-30 doi: 10.13234/j.issn.2095-2805.2025.1.209
Outline
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Compared with the traditional silicon(Si) devices, the gallium nitride(GaN) devices have lower parasitic parameters, a faster switching speed and a smaller on-resistance, which will easily lead to the phenomenon of continuous oscillation during their switching-on process and further result in the circuit instability. Therefore, it is necessary to suppress this phenomenon in practical circuits. Under this background, a negative conductance model of a bridge circuit under the conventional driving scheme is established at first, and the oscillation stability of the circuit is analyzed. Then, by adding optimization to the conventional driving scheme, the corresponding negative conductance model is established. The optimization schemes of series damping represented by changing the resistance and adding ferrite beads and those of parallel low impedance represented by adding RC snubber are selected, respectively. With this model, the influence of adding the driving optimization schemes on the oscillation stability of the circuit can be identified, and the changes in the stability before and after the addition were verified by experimental results, providing a reference for the driving circuit to select its appropriate driving optimization scheme.

GaN  /  negative conductance model  /  oscillation  /  stability  /  driving optimization
Nan ZHANG, Yan LI, Fangwei ZHAO. Research on Driving Optimization for Improving Oscillation Stability of GaN-based Circuits[J]. Journal of Power Supply, 2025 , 23 (1) : 209 -218 . DOI: 10.13234/j.issn.2095-2805.2025.1.209
Funding
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  • National Natural Science Foundation of China(51877007)
Appendix
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Year 2025 volume 23 Issue 1
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.1.209
  • Receive Date：2022-06-10
  • Online Date：2025-07-01
  • Published：2025-01-30
Article Data
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History
  • Received：2022-06-10
  • Revised：2022-09-14
  • Accepted：2022-10-09
Funding
National Natural Science Foundation of China(51877007)
Affiliations
    School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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