Study on Motor Control Circuit Burnout Induced by Space Electrostatic Discharge and Single Event Effect

This paper establishes spacecraft charging induced electrostatic discharge and Single Event Effect experiments to distinguish the causes of induced functional failures of motor control circuits in space applications. In the paper, the LMD18200 motor control circuit was used as the research object, and pulsed laser and an electrostatic generator were used as the simulated irradiation source to carry out Single Event Effect and Space Electrostatic Discharge experiments. It is found that compared with the Single Event Effect, the discharge transients caused by space charging is one of the main factors inducing the burnout of the LMD18200 motor control circuit, and the BOOTSTRAP and PWM pins of the LMD18200 circuit are the main sensitive areas of the SESD.