In this paper, the ac small-signal relations of commonly used DC-DC controllers such as buck, boost and buck-boost are extended to include distributed PCB effects. The critical parameters of these controllers including input-to-output, control-to-output transfer functions and the output impedance impacting power and EMC designs are derived. Using the newly developed broadband model, the effect of PCB parasitics are investigated and compared to the conventional relations.

Additional Metadata
Keywords DC-DC converter, EMI, Power Integrity, Small-Signal Analysis
Persistent URL dx.doi.org/10.1109/APEMC.2016.7522970
Conference 7th Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2016
Citation
Erdin, I. (Ihsan), & Achar, R. (2016). Small signal AC analysis of controller circuits with distributed PCB effects. Presented at the 7th Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2016. doi:10.1109/APEMC.2016.7522970