Switching-Current Measurement for Multiple ICs Sharing a Common Power Island Structure
Switching currents in active integrated circuits (ICs) generate noise in the power distribution network (PDN), which is one of the main sources for many signal/power integrity and electromagnetic interference issues in high-speed electronic devices. Accurate knowledge of the switching currents is the key to ensure a good PDN design. This paper proposes a measurement methodology, when IC information is not available, to obtain the equivalent switching current of each IC in the case where multiple ICs are connected to a common power island structure. Time-domain oscilloscope measurements are used to capture the noise-voltage waveforms at a few locations in the power island. Combining with the multi-port frequency-domain S-parameter measurement among the same locations, an equivalent switching current for each IC is calculated. The proposed method is validated at a different location in the power island by comparing the calculated noise voltage using the equivalent switching currents as excitations with the actual measured noise voltage.
L. Li et al., "Switching-Current Measurement for Multiple ICs Sharing a Common Power Island Structure," Proceedings of the 2012 IEEE International Symposium on Electromagnetic Compatibility (2012, Pittsburgh, PA), pp. 560-564, Institute of Electrical and Electronics Engineers (IEEE), Aug 2012.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2012.6350932
2012 IEEE International Symposium on Electromagnetic Compatibility, EMC 2012 (2012: Aug. 5-10, Pittsburgh, PA)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Electromagnetic Compatibility; Electromagnetic Pulse; Scattering Parameters; Signal Interference
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
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