Using Cross-Triggering in Oscilloscope for Debugging Multiphase Converter Circuit of Personal Computer (PC) Motherboard

Analyzing a 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 can not capture the necessary timing relationship to effectively analyze the whole circuit. This article presents a simple and low-cost solution that can effectively help the users overcome the challenges of debugging multiphase converter circuit of PC motherboards.