A Low-Cost RF Detector to Enhance the Direct Power Injection Conducted Immunity Setup

Direct power injection (DPI) is a convenient method to characterize the conducted susceptibility of integrated circuits (ICs). However, a practical issue of this test is that the voltage, current, and impedance of the tested pin remain unknown during the test, even though it can provide valuable information to IC designers about IC failures. This letter presents an enhancement of the standard DPI test based on a commercial and affordable radiofrequency detector, which covers the frequency range of 5 MHz–3 GHz. The proposed approach does not require specific measurement probes and board design constraints. It can be easily inserted in a conventional DPI test bench without any influence on the test results.