B. T. Nguyen, O. Diaz, Intel Corporation, Hillsboro, OR

Summary: Summary: Analyzing failure on multiphase converter circuit on PC motherboards presents significant challenges due to the high number of nodes and the timing relationship between them. Typically a standard 4-channel oscilloscope cannot capture the necessary timing relationships to effectively analyze the whole circuit. There are two test points for each phase of converter circuit. Typically, there are only four channels for the oscilloscope which are not enough to track the activity of 3 phases or more of converter circuit of PC motherboard. Cross-triggering is a typical feature on most oscilloscopes allows users to link two or more oscilloscopes to increase to eight channels or more. The cross-triggering metrology will make the task of doing fault isolation in multiphase converter circuit much easier and faster.