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Journal of the Korea Institute of Military Science and Technology 2008;11(5):5-11.
Analysis and Design of the In-Rush Current Protection Circuit for SSPA Power Supply
Sang-Hyun Park, Dong-Chul Park, Dae-Kwan Kim
1
2Chungnam National University
3LIG NEX1 Co.
SSPA용 전원공급기의 돌입전류 보호회로 분석 및 설계
박상현, 박동철, 김대관
1국방과학연구소
2충남대학교
3LIG 넥스원
Abstract
Recently developed radars use the solid-state power amplifier to amplify the RF signal. The stability of RF signal directly depends on that of the electric power. So the stable and reliable electric power should be needed. When the electric power switch is tuned on for the first time in order to operate the radar system, the in-rush current is generated because of the capacitive characteristic. The excess in-rush current breaks the element. Therefore, the analysis about the in-rush current to design the electric power system is necessary. In this paper, modeling and simulation on the whole power system is carried out and the necessity of limiting the in-rush current is verified. After the analysis, the circuit to limit the in-rush current is designed and examined to verify the analysis. The circuit is good enough to limit the in-rush current.
Key Words: SSPA(Solid-State Power Amplifier), RADAR, In-Rush Current, Modeling and Simulation, Electric Power
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