Single event latchup mitigation in solid state power controllers

A computer program product for mitigating a solid state power controller (SSPC) open fault caused by single event latchup (SEL) on a power module, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by one or more of a microprocessor in a control communication and power supply module (CCP) and one or more microcontrollers in at least one of a solid state power controller (SSPC) and a microcontroller in the power module, to perform a method comprising:

• determining, with a microprocessor in the CCP, whether communication with a microcontroller in the at least one of a SSPC and a second SSPC in the power module is lost;
• notifying, with the microprocessor in the CCP, via a backplane communication bus, the microcontroller on the power module that the communication with the SSPC in the power module is lost;
• setting, with the microcontroller in the SSPC, a low power operation of a second SSPC in the power module not affected by SEL in response to loss of reception of command messages from the microprocessor in the CCP;
• and
• clearing the open fault.