Analysis of I-DDQ occurrence in testing
This work presents an analysis of I-DDQ dependency on the primary current that hows through the bridging fault and driven gates current. A maximum primary current depends only on the test vectors which minimize channel resistances of transistors. The driven gates current generates when intermediate voltage occurs on the faulty node with creation current path between VDD and GND through the driven gates, and its value depends on circuit parameters such as transistor sizes and fall-in number of driven gates.
bridging faults i-ddq testing fault analysis