关键词: 厚膜混合电路工艺, 电流采集电路, 固态功率控制器

Abstract: At present, in the domestic space-based power supply and distribution system, the printed circuit board technology is usually used to realize the collection and output of the current for the power supply and distribution bus. Although the technology is widely used, but driven by the trend of miniaturization today, it is obviously unable to meet the demand for miniaturization and weight reduction of spaceborne power supply and distribution system. The technology is apparently unable to meet the needs of the current small-scale trend promotion Containing power distribution system for miniaturization, lightweight demand. In view of the above problems, this paper designs a current-acquisition circuit based on thick-film hybrid circuit process. The process technology compared with printed circuit board technology, the circuit layout area less than one-tenth of the latter, and the acquisition accuracy can be greatly enhanced by thick-film laser trimming technology. Currently, the thick-film circuit has been successfully used in the design of many types of spaceborne solid-state power controllers.

Key words: thick-film hybrid circuit process, current-acquisition circuit, solid-state power controllers