Integrated On-Chip Power for Harsh Environments

CoolCAD proposes a high temperature and radiation tolerant silicon carbide (SiC) technology that is comprised of an integrated circuit and a complementary power device for use in power applications such as spacecraft motor drive modules for robotic science probes on orbiters, landers, and rovers. The proposed on-chip power innovation combines our SiC low power integrated circuit technology with a SiC power device to meet the power needs for robotic science probes and instrumentation with blocking voltage needs < 200 V, and current needs < 3A. The proposed technology has the potential to extend the exploration capabilities and survivability of robotic systems in harsh environments such as those present on the surface of Venus by providing long life and reliable power, and relaxing cooling and shielding needs.An advancement in spacecraft motor drive modules and power systems for robotic science probes is necessary to extend the scientific mission capabilities and lifecycle for upcoming mission applications such as Europa Clipper and Lander, New Frontiers 2024 (Comet Surface Sample Return, Saturn Probes,Venus In-situ Explorer), Discovery 2028, and also for possible future flagships (2030s and later) such as Titan Saturn System Mission, Neptune Systems Explorer, Saturn Ring Observer, Venus Lander, and others. Especially the Venus surface exploration systems, and Gas Giant orbiters and probes require niche technologies that are high temperature capable and radiation tolerant.Commercial silicon motor drive modules that are specifically developed for space applications exist; however, such commercial chips work well as long as the temperature and radiation constraints, which are tight, are within the datasheet specifications. The proposed SiC on-chip power solution will significantly increase the safe operating temperature and radiation range of such modules, and open up new exploration possibilities for rovers and landers.