ICEM model extraction: a case study

Dedicated computational models for the electromagnetic emissions of integrated circuits

“…The model can be used for emission simulations due to IC internal activities, within the frequency range of 150 kHz to 1 GHz [2]. It allows IC manufacturers and system integrators to analyze, optimize, and predict several parameters such as auto compatibility of mixedsignal ICs, radiated and conducted emissions of an IC, radiated emission of a global system, decoupling capacitors on a printed circuit board (PCB) and the number of power-supply pin pairs [13] [14]. The purpose of this standard model is to provide data to enable PCB EM tools to compute the EM fields produced by ICs and their associated PCB.…”

“…It corresponds to the impedance network seen between the power supply and ground pins [3]. They can be represented by either lumped electrical elements such as resistance, inductance and capacitance or transmission-line models [13]. These passive elements are determined by contributions from as well the component (junction capacitance, oxide capacitance, metal capacitance, interconnection resistance and inductance) as the package (resistance and capacitance of the leads, the bonding, capacitance between the pins of the package) [15].…”

Development and validation of a microcontroller model for EMC

“…The program uses a cavity model [7,8] to find the transfer parameters of a bare PCB. One can add decoupling capacitors at any location on the PCB and simulate to see their effect on Z and S parameters.…”

“…Models of the IC may be obtained either through measurement or by using IC development tools that can extract resistive, capacitive and inductive values associated with the IC core and package, as well as the time-domain current consumed by the core [3][4][5][6][7]. Models of the PCB are typically found through measurement or are only predicted at low frequencies, though methods of predicting the high-frequency impedance characteristics of PCBs are available [8].…”