A new circuit connection for airborne gravity power supply system

After analyzing the power supply system design of airborne gravity measurement, aiming at the instability of full load power on or repeated start, a new circuit connection mode based on VICOR power module is proposed to solve the above problems. In the design of aviation gravity power supply, the general circuit structure design and parameter selection refer to the technical manual of the power chip module manufacturer, and the EN port of the rectifier filter module is selected to drive the DC-DC module. However, similar faults such as full load power on difficulty or repeated startup are often encountered, which affect the stable operation of the power supply. In this paper, the BOK output of VICOR module combined with triode is used to control the PC enable port of DC-DC power supply module, which does not affect the power on of front-end rectifier filter circuit. The circuit analysis results show that compared with the EN port drive enable, when using the BOK drive, the threshold voltage lower than 2.3 V can be guaranteed at the output low level, the PC enable port can be fully blocked, and there will be no phenomena such as full load power on difficulty or repeated startup, so that the aviation gravity power supply system can work more safely and stably.