Abstract:

In view of the increasing integration of space systems and the demand of larger integrated circuits for highpower density and miniaturized radiation-hardened point of load(POL) power supply, a design scheme for the high power density dual-circuit radiation-hardened POL power supply is proposed. The circuit design,components selection, structural and technological design are described separately.Through simulations aualysis, analog experiments,sample testing and evaluation tests, the ratiouality of the design is verified. The power density of radiation-hardened POL power supply significantly exceeds that of traditional power supply. In the case of the limited area of the single machine and the integration in space system, it can provide a miniaturized and lightweight high-power radiation-hardened POL power supply platform.

Key words: high-power density, radiation-hardened POL power supply, miniaturization, high reliability