Fault Isolation of Open Defects Using Space Domain Reflectometry
نویسندگان
چکیده
Recently, a new approach for isolation of open faults in integrated circuits (ICs) was developed. It is based on mapping the radio-frequency (RF) magnetic field produced by the defective part fed with RF probing current, giving the name to Space Domain Reflectometry (SDR). SDR is a noncontact and nondestructive technique to localize open defects in package substrates, interconnections and semiconductor devices. It provides 2D failure isolation capability with defect localization resolution down to 50 microns. It is also capable of scanning long traces in Si. This paper describes the principles of the SDR and its application for the localization of open and high resistance defects. It then discusses some analysis methods for application optimization, and gives examples of test samples as well as case studies from actual failures.
منابع مشابه
Performance Analysis of the Matched-Pulse-Based Fault Detection
The problem of fault detection and location in wire networks has gained an increasing importance in the last few years [1]. Wired networks are found in all modern systems, and are used to transmit different signals (control, alarm, etc.). That is why the issue of safe and reliable wiring systems is among the primary concerns of researchers and government agencies today [2]. There are several me...
متن کاملFault Detection and Isolation of Vehicle Driveline System
Vehicle driveline system and its working accuracy play an important role in the performance of car. The purpose of this study is to provide an appropriate mechanism for investigating, identifying and determining the position and size of defects in the vehicle power transmission system. This is based on the patterns of the residual signal, obtained from a simulated model of the system. Neuro-...
متن کاملWiring Diagnostics via l1-Regularized Least Squares
A new method for detecting and locating wiring damage using time domain reflectometry with arbitrary input interrogation signals is presented. This method employs existing l1 regularization techniques from convex optimization and compressed sensing to exploit sparsity in the distribution of faults along the length of a wire, while further generalizing and improving commonly used fault detection...
متن کاملFault Diagnosis and Fault-Tolerant SVPWM Technique of Six-phase Converter under Open-Switch Fault
In this paper, a new open-switch fault diagnosis method is proposed for the six-phase AC-DC converter based on the difference between the phase current and the corresponding reference using an adaptive threshold. The open-switch faults are detected without any additional equipment and complicated calculations, since the proposed fault detection method is integrated with the controller required ...
متن کاملMonitoring of Drop Optical Fibers in 32-Branched PON using 1.65 μm Pulse-OCDR
Passive optical network (PON) systems based on optical splitters provide low-cost optical access by sharing equipment cost between subscribers. However, it was difficult to monitor a drop fiber section from the central office using reflectometry because of the overlap of reflectometry results derived from multiple drop fiber branches. This difficulty in monitoring has added maintenance costs be...
متن کامل