Assessment method of gamma-dose radiation hardness of power supply system

The quantification of margins and uncertainties (QMU) method is analyzed, which is used to assess the radiation hardness of the electronic system. In order to use the QMU method, a procedure based on Monte Carlo method and SPICE circuit simulator is proposed to evaluate the margin and uncertainty of the system’s output. The radiation hardness of a power supply system is assessed, and the assessed results are in good agreement with those obtained experimentally．