关键词: 极限评估, 电源监控, 失效模式

Abstract: The limit evaluation research is carried out based on a domestic anti-irradiation power supply monitoring circuit. The detailed specifications, core parameters and limit criteria of this product are analyzed. The ultimate capability and failure mode of the circuit under electrical, thermal and mechanical stresses are evaluated by designing the step stress test, life test and irradiation test, and the effectiveness of the limit evaluation scheme is verified. The test results show that the designed limit evaluation scheme can effectively reflect the performance of device under various limit conditions, the design weakness and failure mode of the device can be identified through the test, which provides support for the optimization of the device in design, process and material.

Key words: limit evaluation, power monitoring, failure mode