Abstract: This article introduces the kinds of DC/DC convertor’s transient responses and analyzes the principle of these transient responses including the transient voltage, current and power. The uncontrollable transient responses can endanger the DC/DC convertor. In order to ensure these transient responses under control and enhance the reliability of the convertor, the influence of the DC/DC convertor’s transient responses is analyzed, and the results of the test are given.

Key words: transient responses, electrical stresses, reliability