Reduction of EMC Emissions in Mixed Signal Integrated Circuits with Embedded LIN Driver

P. Hartl, M. Kuban, P. Horsky

Reduction of EMC Emissions in Mixed Signal Integrated Circuits with Embedded LIN Driver

Číslo: 2/2016
Periodikum: Radioengineering Journal
DOI: 10.13164/re.2016.0345

Klíčová slova: EMC, emissions, ground splitting, linear voltage regulator, automotive industry, LIN bus driver, EMC, emise, dělení země, lineární regulátor napětí, automobilový průmysl, řidič sběrnice LIN

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Anotace: This paper describes several methods for reduction of electromagnetic emissions (EME) of mixed signal integrated circuits (IC). The focus is on the impact that a LIN bus communication block has on a complex IC which contains analog blocks, noisy digital block, micro-core (µC) and several types of memories. It is used in an automotive environment, where EMC emission reduction is one of the key success factors. Several proposed methods for EME reduction are described and implemented on three test chips. These methods include current consumption reduction, internal on-chip decoupling, ground separation and different linear voltage regulator topologies. Measurement results of several fabricated test chips are shown and discussed.