Understanding the Impact on parasitic Probing Effects onto the PCB Power-to-Control Crosstalk in Switch-Mode Power Supplies
Conference: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/09/2023 - 05/11/2023 at Nürnberg, Germany
doi:10.30420/566091259
Proceedings: PCIM Europe 2023
Pages: 5Language: englishTyp: PDF
Authors:
Muff, Simon (Keysight Technologies, Germany)
Femia, Nicola (IPERA SRL, Italy & University of Salerno, Italy)
Di Capua, Giulia (IPERA SRL, Italy & University of Cassino and Southern Lazio, Italy)
Wen, Hanqing; Lee, Steven (Keysight Technologies, USA)
Abstract:
The Power-to-Control Crosstalk (PCC) in Switch-Mode Power Supplies (SMPS) can be dominated by the parasitic capacitances of the PCB layout. PCC is facilitated by apparently harmless elements of the power converter design, like control chip pinout, the distribution of ground planes, and the setup of the feedback control compensation. This paper shows how to analyze the PCB PCC in power converters by means of FEM simulations, and discusses the effects of probing in measurements, which can mask the increased electromagnetic emissions caused by PCC phenomena.